Per Barth Lilje

Head of Department - Institute of Theoretical Astrophysics

Norwegian version of this page

Email p.b.lilje@astro.uio.no

Phone +47 22856517

Room 107

Username

Visiting address Sem Sælands vei 13 Svein Rosselands hus 0371 Oslo

Postal address Postboks 1029 Blindern 0315 Oslo

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Academic interests

Cosmology
Large-scale structures in the universe
The cosmic background radiation
Astrophysical space projects

Higher education and employment history

M.Sc., University of Oslo, 1985
Ph.D., University of Cambridge, 1988
Post doctoral research fellow, Canadian Institute for Theoretical Astrophysics 1988 – 1989
NORDITA-fellow, NORDITA, Copenhagen 1989 – 1992
Associate professor, Institute of Theoretical Astrophysics 1992 – 1993
Professor, Institute of Theoretical Astrophysics from 1993
Head, Institute of Theoretical Astrophysics 2005 – 2012 and 2017-2024

Appointments

Delegate, European Space Agency Science Programme Committee
Member, Board of Directors, Astronomy and Astrophysics (journal)
Member, Governing Board of NORDITA

Memberships

Member, Norwegian Academy of Science and Letters
Member, International Astronomical Union
Fellow, Royal Astronomical Society

Cooperation

Leading the Norwegian participation in the international space project Euclid (http://sci.esa.int/euclid), with wide international participation.

Tags: Astronomy and Astrophysics, Cosmology, Planck, Euclid, Structure formation, Space based observations, Cosmic Microwave Background (CMB)

Pocino, A.; Tutusaus, I.; Castander, F.J.; Fosalba, P.; Crocce, M. & Porredon, A. [Show all 159 contributors for this article] (2021). Euclid preparation: XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 655. doi: 10.1051/0004-6361/202141061. Full text in Research Archive
Martinelli, Matteo; Martins, Carlos Jose Amaro Parente; Nesseris, S.; Tutusaus, I.; Blanchard, Alain & Camera, Stefano [Show all 95 contributors for this article] (2021). Euclid: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 654. doi: 10.1051/0004-6361/202141353. Full text in Research Archive
Jiménez Muñoz, Alejandro; Macías-Pérez, Juan Francisco; Secroun, A.; Gillard, W.; Kubik, B. & Auricchio, N. [Show all 99 contributors for this article] (2021). Euclid: Estimation of the Impact of Correlated Readout Noise for Flux Measurements with the Euclid NISP Instrument. Publications of the Astronomical Society of the Pacific. ISSN 0004-6280. 133(1027). doi: 10.1088/1538-3873/ac21de.
Stanford, Spencer A.; Masters, Daniel; Darvish, B.; Stern, D.; Cohen, J. G. & Capak, P. [Show all 185 contributors for this article] (2021). Euclid Preparation. XIV. The Complete Calibration of the Color–Redshift Relation (C3R2) Survey: Data Release 3. Astrophysical Journal Supplement Series. ISSN 0067-0049. 256(1). doi: 10.3847/1538-4365/ac0833.
Knabenhans, Mischa; Stadel, J.; Potter, D.; Dakin, J.; Hannestad, Steen & Tram, Thomas [Show all 134 contributors for this article] (2021). Euclid preparation: IX. EuclidEmulator2 – power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations. Monthly notices of the Royal Astronomical Society. ISSN 0035-8711. 505(2), p. 2840–2869. doi: 10.1093/mnras/stab1366. Full text in Research Archive
Fumagalli, Alessandra; Saro, A.; Borgani, S.; Castro, T.; Costanzi, M. & Monaco, P. [Show all 96 contributors for this article] (2021). Euclid: Effects of sample covariance on the number counts of galaxy clusters. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 652. doi: 10.1051/0004-6361/202140592. Full text in Research Archive
Taylor, Peter L.; Kitching, T.; Cardone, V. F.; Ferté, A.; Huff, Eric M. & Bernardeau, F. [Show all 95 contributors for this article] (2021). Euclid: Forecasts for k-cut 3 x 2 Point Statistics. The Open Journal of Astrophysics. 4. doi: 10.21105/astro.2012.04672. Full text in Research Archive
Martinelli, Matteo; Tutusaus, I.; Archidiacono, M.; Camera, S.; Cardone, V. F. & Clesse, Sébastien [Show all 94 contributors for this article] (2021). Euclid: Impact of non-linear and baryonic feedback prescriptions on cosmological parameter estimation from weak lensing cosmic shear. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 649. doi: 10.1051/0004-6361/202039835.
Ilbert, O.; de la Torre, S.; Martinet, N.; Wright, A. H.; Paltani, S. & Laigle, C. [Show all 164 contributors for this article] (2021). Euclid preparation: XI. Mean redshift determination from galaxy redshift probabilities for cosmic shear tomography. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 647. doi: 10.1051/0004-6361/202040237.
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Alves, M. I. R.; Ashdown, M.; Aumont, J. & Baccigalupi, Carlo [Show all 162 contributors for this article] (2020). Planck 2018 results: XII. Galactic astrophysics using polarized dust emission. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201833885. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo; Ballardini, M. & Banday, Anthony J. [Show all 133 contributors for this article] (2020). Planck 2018 results: XI. Polarized dust foregrounds. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201832618. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Arroja, F.; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo & Ballardini, M. [Show all 175 contributors for this article] (2020). Planck 2018 results: X. Constraints on inflation. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201833887. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Arroja, F.; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo & Ballardini, M. [Show all 160 contributors for this article] (2020). Planck 2018 results: IX. Constraints on primordial non-Gaussianity. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201935891. Full text in Research Archive
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo & Ballardini, M. [Show all 158 contributors for this article] (2020). Planck 2018 results: VIII. Gravitational lensing. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201833886. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo; Ballardini, M. & Banday, Anthony J. [Show all 149 contributors for this article] (2020). Planck 2018 results: VII. Isotropy and statistics of the CMB. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201935201. Full text in Research Archive
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo & Ballardini, M. [Show all 181 contributors for this article] (2020). Planck 2018 results: VI. Cosmological parameters. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201833910.
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo & Ballardini, M. [Show all 167 contributors for this article] (2020). Planck 2018 results: V. CMB power spectra and likelihoods. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201936386. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo; Ballardini, M. & Banday, Anthony J. [Show all 154 contributors for this article] (2020). Planck 2018 results: IV. Diffuse component separation. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201833881. Full text in Research Archive
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo & Ballardini, M. [Show all 154 contributors for this article] (2020). Planck 2018 results: III. High Frequency Instrument data processing and frequency maps. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201832909. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Argüeso, F.; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo & Ballardini, M. [Show all 150 contributors for this article] (2020). Planck 2018 results: II. Low Frequency Instrument data processing. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201833293. Full text in Research Archive
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Arroja, F.; Ashdown, M.; Aumont, J. & Baccigalupi, Carlo [Show all 194 contributors for this article] (2020). Planck 2018 results: I. Overview and the cosmological legacy of Planck. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/201833880. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo; Ballardini, M. & Banday, Anthony J. [Show all 128 contributors for this article] (2020). Planck intermediate results: LVI. Detection of the CMB dipole through modulation of the thermal Sunyaev-Zeldovich effect: Eppur si muove II. Astronomy and Astrophysics (A & A). ISSN 0004-6361. doi: 10.1051/0004-6361/202038053. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, Carlo; Ballardini, M. & Banday, Anthony J. [Show all 119 contributors for this article] (2020). Planck intermediate results: LV. Reliability and thermal properties of high-frequency sources in the Second Planck Catalogue of Compact Sources. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 644. doi: 10.1051/0004-6361/201936794. Full text in Research Archive
Martinelli, Matteo; Martins, Carlos Jose Amaro Parente; Nesseris, S.; Sapone, Domenico; Tutusaus, I. & Avgoustidis, Anastasios [Show all 85 contributors for this article] (2020). Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 644. doi: 10.1051/0004-6361/202039078. Full text in Research Archive
Desprez, G.; Paltani, S.; Coupon, J.; Almosallam, I.; Alvarez-Ayllon, A. & Amaro, V. [Show all 172 contributors for this article] (2020). Euclid preparation: X. The Euclid photometric-redshift challenge. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 644. doi: 10.1051/0004-6361/202039403. Full text in Research Archive
Pöntinen, Mikko; Granvik, Mikael; Nucita, A. A.; Conversi, L.; Altieri, B. & Auricchio, N. [Show all 60 contributors for this article] (2020). Euclid: Identification of asteroid streaks in simulated images using StreakDet software. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 644. doi: 10.1051/0004-6361/202037765. Full text in Research Archive
Tutusaus, I.; Martinelli, M.; Cardone, V. F.; Camera, S.; Yahia-Cherif, S. & Casas, S. [Show all 91 contributors for this article] (2020). Euclid: The importance of galaxy clustering and weak lensing cross-correlations within the photometric Euclid survey. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 643. doi: 10.1051/0004-6361/202038313. Full text in Research Archive
Guglielmo, Valentina; Saglia, R.; Castander, F. J.; Galametz, A.; Paltani, S. & Bender, R. [Show all 147 contributors for this article] (2020). Euclid preparation: VIII. The Complete Calibration of the Colour–Redshift Relation survey: VLT/KMOS observations and data release. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 642. doi: 10.1051/0004-6361/202038334. Full text in Research Archive
Blanchard, Alain; Camera, S.; Carbone, Carmelita; Cardone, V. F.; Casas, S. & Clesse, Sébastien [Show all 153 contributors for this article] (2020). Euclid preparation: VII. Forecast validation for Euclid cosmological probes. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 642. doi: 10.1051/0004-6361/202038071. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Andersen, Kristian Joten; Ashdown, M.; Baccigalupi, Carlo; Ballardini, M. & Banday, Anthony J. [Show all 138 contributors for this article] (2020). Planck intermediate results: LVII. Joint Planck LFI and HFI data processing. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 643. doi: 10.1051/0004-6361/202038073. Full text in Research Archive
Pires, Sandrine; Vandenbussche, V.; Kansal, V.; Bender, R.; Blot, L. & Bonino, D. [Show all 52 contributors for this article] (2020). Euclid: Reconstruction of weak-lensing mass maps for non-Gaussianity studies. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 638. doi: 10.1051/0004-6361/201936865. Full text in Research Archive
Deshpande, Anurag C.; Kitching, Thomas D.; Cardone, V. F.; Taylor, P. L.; Casas, S. & Camera, S. [Show all 72 contributors for this article] (2020). Euclid: The reduced shear approximation and magnification bias for Stage IV cosmic shear experiments. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 636. doi: 10.1051/0004-6361/201937323. Full text in Research Archive
Bisigello, Laura; Kuchner, U.; Conselice, C. J.; Andreon, S.; Bolzonella, M. & Duc, P.-A. [Show all 74 contributors for this article] (2020). Euclid: the selection of quiescent and star-forming galaxies using observed colours. Monthly notices of the Royal Astronomical Society. ISSN 0035-8711. 494(2), p. 2337–2354. doi: 10.1093/mnras/staa885. Full text in Research Archive
Schmitz, M. A.; Starck, J.-L.; Ngole Mboula, F.; Auricchio, N.; Brinchmann, Jarle & Capobianco, R. I. Vito [Show all 38 contributors for this article] (2020). Euclid: Nonparametric point spread function field recovery through interpolation on a graph Laplacian. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 636. doi: 10.1051/0004-6361/201936094. Full text in Research Archive
Paykari, Paniez; Kitching, Thomas D.; Hoekstra, Henk; Azzolini, R.; Cardone, V. F. & Cropper, Mark [Show all 129 contributors for this article] (2020). Euclid preparation: VI. Verifying the performance of cosmic shear experiments. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 635. doi: 10.1051/0004-6361/201936980. Full text in Research Archive
Barnett, Rhys; Warren, S. J.; Mortlock, D. J.; Cuby, J.-G.; Conselice, C. & Hewett, P. C. [Show all 128 contributors for this article] (2019). Euclid preparation: V. Predicted yield of redshift 7 < z < 9 quasars from the wide survey. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 631. doi: 10.1051/0004-6361/201936427. Full text in Research Archive
Adam, R.; Vannier, M.; Maurogordato, S.; Biviano, A.; Adami, C. & Ascaso, B. [Show all 58 contributors for this article] (2019). Euclid preparation: III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 627. doi: 10.1051/0004-6361/201935088. Full text in Research Archive
Martinet, Nicolas; Schrabback, T.; Hoekstra, Henk; Tewes, M.; Herbonnet, R. & Schneider, Peter [Show all 24 contributors for this article] (2019). Euclid preparation: IV. Impact of undetected galaxies on weak-lensing shear measurements. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 627. doi: 10.1051/0004-6361/201935187. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Argüeso, F.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Ballardini, M. [Show all 140 contributors for this article] (2018). Planck intermediate results: LIV. The Planck multi-frequency catalogue of non-thermal sources. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 619. doi: 10.1051/0004-6361/201832888. Full text in Research Archive
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Ballardini, M. [Show all 135 contributors for this article] (2018). Planck intermediate results: LIII. Detection of velocity dispersion from the kinetic Sunyaev-Zeldovich effect. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 617. doi: 10.1051/0004-6361/201731489. Full text in Research Archive
Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Ballardini, M. & Banday, A. J. [Show all 149 contributors for this article] (2017). Planck intermediate results: LII. Planet flux densities. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 607. doi: 10.1051/0004-6361/201630311. Full text in Research Archive
Aghanim, Nabila; Akrami Cheghasiahi, Yashar; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Ballardini, M. [Show all 157 contributors for this article] (2017). Planck intermediate results: LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 607. doi: 10.1051/0004-6361/201629504. Full text in Research Archive
Aghanim, Nabila; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Ballardini, M. & Banday, A. J. [Show all 158 contributors for this article] (2017). Planck intermediate results: L. Evidence of spatial variation of the polarized thermal dust spectral energy distribution and implications for CMB B-mode analysis. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 599. doi: 10.1051/0004-6361/201629164. Full text in Research Archive
Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Ballardini, M. & Banday, A. J. [Show all 159 contributors for this article] (2016). Planck intermediate results: XLVIII. Disentangling Galactic dust emission and cosmic infrared background anisotropies. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201629022. Full text in Research Archive
Adam, R.; Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Ballardini, M. [Show all 167 contributors for this article] (2016). Planck intermediate results: XLVII. Planck constraints on reionization history. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201628897. Full text in Research Archive
Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Ballardini, M. & Banday, A. J. [Show all 172 contributors for this article] (2016). Planck intermediate results: XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201628890. Full text in Research Archive
Aghanim, N.; Alves, M. I. R.; Arzoumanian, D.; Aumont, J.; Baccigalupi, C. & Ballardini, M. [Show all 167 contributors for this article] (2016). Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201628636. Full text in Research Archive
Adam, R.; Ade, P. A. R.; Alves, M. I. R.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 177 contributors for this article] (2016). Planck intermediate results: XLII. Large-scale Galactic magnetic fields. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201528033. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 180 contributors for this article] (2016). Planck intermediate results: XLI. A map of lensing-induced B-modes. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201527932.
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 204 contributors for this article] (2016). Planck intermediate results: XL. The Sunyaev-Zeldovich signal from the Virgo cluster. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201527743. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 190 contributors for this article] (2016). Planck intermediate results: XXXIX. The Planck list of high-redshift source candidates. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201527206. Full text in Research Archive
Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Ballardini, M. & Banday, A. J. [Show all 150 contributors for this article] (2016). Planck intermediate results: XLIX. Parity-violation constraints from polarization data. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201629018. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Aller, H. D.; Aller, M. F.; Arnaud, M. & Aumont, J. [Show all 186 contributors for this article] (2016). Planck intermediate results: XLV. Radio spectra of northern extragalactic radio sources. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201527780. Full text in Research Archive
Adam, R.; Ade, P. A. R.; Aghanim, N.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 181 contributors for this article] (2016). Planck intermediate results: XLIII. Spectral energy distribution of dust in clusters of galaxies. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 596. doi: 10.1051/0004-6361/201628522. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 222 contributors for this article] (2016). Planck 2015 results: XXVIII. the Planck Catalogue of Galactic cold clumps. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525819. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 259 contributors for this article] (2016). Planck 2015 results: XXVII. The second Planck catalogue of Sunyaev-Zeldovich sources. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525823. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Argüeso, F.; Arnaud, M.; Ashdown, M. & Aumont, J. [Show all 242 contributors for this article] (2016). Planck 2015 results: XXVI. The Second Planck Catalogue of Compact Sources. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201526914. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Alves, M. I. R.; Arnaud, M.; Ashdown, M. & Aumont, J. [Show all 239 contributors for this article] (2016). Planck 2015 results: XXV. Diffuse low-frequency Galactic foregrounds. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201526803. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 235 contributors for this article] (2016). Planck 2015 results: XXIV. Cosmology from Sunyaev-Zeldovich cluster counts. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525833. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 201 contributors for this article] (2016). Planck 2015 results: XXIII. The thermal Sunyaev-Zeldovich effect-cosmic infrared background correlation. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201527418. Full text in Research Archive
Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 201 contributors for this article] (2016). Planck 2015 results: XXII. A map of the thermal Sunyaev-Zeldovich effect. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525826. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 231 contributors for this article] (2016). Planck 2015 results: XXI. The integrated Sachs-Wolfe effect. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525831. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Arroja, F.; Ashdown, M. & Aumont, J. [Show all 246 contributors for this article] (2016). Planck 2015 results: XX. Constraints on inflation. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525898. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Arroja, F.; Ashdown, M. & Aumont, J. [Show all 232 contributors for this article] (2016). Planck 2015 results: XIX. Constraints on primordial magnetic fields. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525821. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 225 contributors for this article] (2016). Planck 2015 results: XVIII. Background geometry and topology of the Universe. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525829. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Arroja, F.; Ashdown, M. & Aumont, J. [Show all 241 contributors for this article] (2016). Planck 2015 results: XVII. Constraints on primordial non-Gaussianity. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525836. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Akrami Cheghasiahi, Yashar; Aluri, P. K.; Arnaud, M. & Ashdown, M. [Show all 243 contributors for this article] (2016). Planck 2015 results: XVI. Isotropy and statistics of the CMB. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201526681. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 229 contributors for this article] (2016). Planck 2015 results: XV. Gravitational lensing. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525941. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 236 contributors for this article] (2016). Planck 2015 results: XIV. Dark energy and modified gravity. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525814. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 261 contributors for this article] (2016). Planck 2015 results: XIII. Cosmological parameters. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525830. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J. & Baccigalupi, C. [Show all 230 contributors for this article] (2016). Planck 2015 results: XII. Full focal plane simulations. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201527103. Full text in Research Archive
Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 223 contributors for this article] (2016). Planck 2015 results: XI. CMB power spectra, likelihoods, and robustness of parameters. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201526926. Full text in Research Archive
Adam, R.; Ade, P. A. R.; Aghanim, N.; Alves, M. I. R.; Arnaud, M. & Ashdown, M. [Show all 239 contributors for this article] (2016). Planck 2015 results: X. Diffuse component separation: Foreground maps. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525967. Full text in Research Archive
Adam, R.; Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M. & Aumont, J. [Show all 239 contributors for this article] (2016). Planck 2015 results: IX. Diffuse component separation: CMB maps. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525936. Full text in Research Archive
Adam, R.; Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M. & Aumont, J. [Show all 225 contributors for this article] (2016). Planck 2015 results: VIII. High Frequency Instrument data processing: Calibration and maps. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525820. Full text in Research Archive
Adam, R.; Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M. & Aumont, J. [Show all 227 contributors for this article] (2016). Planck 2015 results: VII. High Frequency Instrument data processing: Time-ordered information and beams. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525844. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 200 contributors for this article] (2016). Planck 2015 results: VI. LFI mapmaking. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525813. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 208 contributors for this article] (2016). Planck 2015 results: V. LFI calibration. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201526632. Full text in Research Archive
Ade, P. A. R.; Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Banday, A. J. [Show all 202 contributors for this article] (2016). Planck 2015 results: IV. Low Frequency Instrument beams and window functions. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525809. Full text in Research Archive
Ade, P. A. R.; Aumont, J.; Baccigalupi, C.; Banday, A. J.; Barreiro, R. B. & Bartolo, N. [Show all 170 contributors for this article] (2016). Planck 2015 results: III. LFI systematic uncertainties. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201526998.
Ade, P. A. R.; Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C. & Ballardini, M. [Show all 216 contributors for this article] (2016). Planck 2015 results: II. Low Frequency Instrument data processings. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 594. doi: 10.1051/0004-6361/201525818. Full text in Research Archive

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Lilje, Per Barth; Helleland, Botolv; Johannessen, Finn Erhard; Leifsen, Torben & Ørstavik, Inger Berg (2020). Almanakk for Norge for året etter Kristi fødsel 2020. Gyldendal Norsk Forlag A/S. ISBN 978-82-05-53122-2. 170 p.
Lilje, Per Barth; Helleland, Botolv; Johannessen, Finn Erhard; Leifsen, Torben & Ørstavik, Inger Berg (2019). Almanakk for Norge for året etter Kristi fødsel 2020. Gyldendal Norsk Forlag A/S. ISBN 9788205531222. 207. 168 p.
Lilje, Per Barth; Helleland, Botolv; Johannessen, Finn Erhard; Leifsen, Torben & Ørstavik, Inger Berg (2018). Almanaikk for Norge for året etter Kristi fødsel 2019. Gyldendal Norsk Forlag A/S. ISBN 9788205518209. 164 p.

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Lilje, Per Barth (2021). Intervju om vintersolverv på "God ettermiddag Møre og Romsdal". [Radio]. NRK P1 Møre og Romsdal.
Lilje, Per Barth (2020). Korona-året 2020 er ei uke lengre. [Internet]. NRK Nordland.
Lilje, Per Barth (2020). To av verdens rikeste menn tar over verdensrommet. Nå henger Norge seg på. [Newspaper]. A-magasinet (Aftenposten).
Lilje, Per Barth (2020). Skal lage nytt kart over universet. [Internet]. Norsk Romsenters nyheter.
Lilje, Per Barth (2020). Intervju om skuddår. [Radio]. NRK P1+, "Stanghelle".
Lilje, Per Barth (2019). Hvorfor er påsken så sen i 2019? [Radio]. P4 radio.
Lilje, Per Barth (2019). Datoene for påsken 2019 ble satt i 1583. Titan.uio.no.
Lilje, Per Barth (2019). Underholdningsavdelingen tar kvelden. [Radio]. NRK P1.
Lilje, Per Barth (2019). Derfor kommer påska en måned for sent i år. [Internet]. NRK.
Lilje, Per Barth (2019). Hvorfor er påsken så sen i 2019? [Radio]. NRK.
Lilje, Per Barth (2018). Intervju om måneformørkelsen. [Radio]. Radio Norge.
Lilje, Per Barth (2018). Studio 2. Intervju om stjernehimmelen i juli og august. [Radio]. NRK P2.
Lilje, Per Barth (2017). Her fryser de ned deler til teleskopet som skal studere den mystiske mørke energien. [Journal]. Teknisk Ukeblad.
Lilje, Per Barth (2016). Intervju i NRK P13. [Radio]. NRK P13.
Lilje, Per Barth (2016). Ekstremt sjeldent fenomen forbløffer. [TV]. VG-TV.
Ivarsen, Magnus Fagernes; Lilje, Per Barth & Mota, David (2016). Distinguishing screening mechanisms with environment-dependent velocity statistics. Universitetet i Oslo.

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Published Nov. 3, 2010 3:20 PM - Last modified June 18, 2021 12:24 PM

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Cosmology and extragalactic astronomy