Øystein Elgarøy

Professor - Kosmologi
Emneord: Astronomi og astrofysikk, Kosmologi, Euclid, Strukturdannelse

Publikasjoner

  • Elgarøy, Øystein & Grøn, Øyvind (2013). Gravitational Entropy and Inflation. Entropy. ISSN 1099-4300. 15, s. 3620–3639. doi: 10.3390/e15093620 Fulltekst i vitenarkiv
  • Gjerløw, Eirik & Elgarøy, Øystein (2011). Are all modes created equal? An analysis of the WMAP 5-and 7-year data without inflationary prejudice. Physical Review D. Particles and fields. ISSN 0556-2821. 83(6). doi: 10.1103/PhysRevD.83.067301
  • Kristiansen, Jostein Riiser & Elgarøy, Øystein (2011). Reactor sterile neutrinos, dark energy, and the age of the universe. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 532. doi: 10.1051/0004-6361/201117025
  • Groeneboom, Nicolaas Ervik & Elgarøy, Øystein (2008). Detection of trans-Planckian effects in the cosmic microwave background. Physical Review D. Particles and fields. ISSN 0556-2821. 77. doi: 10.1103/PhysRevD.77.043522
  • Kiakotou, A; Elgarøy, Øystein & Lahav, O (2008). Neutrino mass, dark energy, and the linear growth factor. Physical Review D. Particles and fields. ISSN 0556-2821. 77. doi: 10.1103/PhysRevD.77.063005
  • Kristiansen, Jostein Riiser & Elgarøy, Øystein (2008). Cosmological implications of the KATRIN experiment. Journal of Cosmology and Astroparticle Physics (JCAP). ISSN 1475-7516. doi: 10.1088/1475-7516/2008/01/007
  • Grøn, Øyvind & Elgarøy, Øystein (2007). Is space expanding in the Friedmann universe models. American Journal of Physics (AJP). ISSN 0002-9505. 75(2), s. 151–157.
  • Kristiansen, Jostein Riiser; Elgarøy, Øystein & Dahle, Håkon (2007). Using the cluster mass function from weak lensing to constrain neutrino masses. Physical Review D. Particles and fields. ISSN 0556-2821. 75. doi: 10.1103/PhysRevD.75.083510
  • Grøn, Øyvind; Elgaroy, O & Elgarøy, Øystein (2007). Is space expanding in the Friedmann universe models? American Journal of Physics (AJP). ISSN 0002-9505. 75. doi: 10.1119/1.2360990
  • Elgarøy, Øystein & Multamäki, Tuomas (2007). On using the cosmic microwave background shift parameter in tests of models of dark energy. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 471, s. 65–70. doi: 10.1051/0004-6361%3A20077292
  • Elgarøy, Øystein (2007). Upper limits on neutrino masses from cosmology. Nuclear physics B, Proceedings supplements. ISSN 0920-5632. 168, s. 51–53. doi: 10.1016/j.nuclphysbps.2007.02.005
  • Elgarøy, Øystein & Lahav, Ofer (2006). Sub-eV upper limits on neutrino masses from cosmology. Physica Scripta. ISSN 0031-8949. 127, s. 105–106.
  • Kristiansen, Jostein Riiser; Eriksen, Hans Kristian Kamfjord & Elgarøy, Øystein (2006). Revised WMAP constraints on neutrino masses and other extensions of the minimal Lambda CDM model. Physical Review D. Particles and fields. ISSN 0556-2821. 74.
  • Elgarøy, Øystein & Multamäki, T. (2006). Bayesian analysis of Friedmannless cosmologies. Journal of Cosmology and Astroparticle Physics (JCAP). ISSN 1475-7516. 09(002). doi: 10.1088/1475-7516/2006/09/00
  • Amarzguioui, Morad; Elgarøy, Øystein; Mota, David Fonseca & Multamaki, T (2006). Cosmological constraints on f(R) gravity theories within the Palatini approach. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 454, s. 707–714. doi: 10.1051/0004-6361%3A20064994
  • Evans, A. K. D.; Wehus, I. K.; Grøn, Øyvind & Elgarøy, Øystein (2005). Geometrical constraints on dark energy. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 430, s. 399–410.
  • Elgarøy, Øystein & Multamäki, T. (2005). Cosmic acceleration and extra dimensions: constraints on modifications of the Friedmann equation. Monthly notices of the Royal Astronomical Society. ISSN 0035-8711. 356, s. 475–479.
  • Elgarøy, Øystein & Lahav, Ofer (2005). Neutrino masses from cosmological probes. New Journal of Physics. ISSN 1367-2630. 7.
  • Amarzguioui, Morad; Elgarøy, Øystein & Multamäki, T. (2005). Combined constraints on Cardassian models from supernovae, cosmic microwave background and large scale structure observations. Journal of Cosmology and Astroparticle Physics (JCAP). ISSN 1475-7516. 01.
  • Elgarøy, Øystein; Mota, David Fonseca & Multamäki, T. (2005). Loitering universe models in light of the CMB. Physical Review D. Particles and fields. ISSN 0556-2821. 71.
  • Lahav, O & Elgarøy, Øystein (2005). Weighing neutrinos with large-scale structure. Nuclear physics B, Proceedings supplements. ISSN 0920-5632. 143, s. 439–446.
  • Ouyed, Rachid; Elgarøy, Øystein; Dahle, Håkon & Keranen, Petteri (2004). Meissner Effect and Vortex Dynamics in Quark Stars -- A Model for Soft Gamma-Ray Repeaters. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 420, s. 1025–1032.
  • Multamaki, T & Elgarøy, Øystein (2004). The Integrated Sachs-Wolfe effect as a probe of non-standard cosmological evolution. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 423, s. 811–819.
  • Elgarøy, Øystein; Engeland, Torgeir; Hjorth-Jensen, Morten & Osnes, Eivind (2001). Pairing correlations in nuclear systems, from infinite nuclear matter to finite nuclei. International Journal of Modern Physics B. ISSN 0217-9792. 15, s. 1501–1509.
  • Elgarøy, Øystein & Blasio, Fabio V. de (2001). Superfluid vortices in neutron stars. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 370, s. 939–950.
  • Blasio, Fabio V. de & Elgarøy, Øystein (1999). Microscopic structure of a vortex line in superfluid neutron star matter. Physical Review Letters. ISSN 0031-9007. 82(9), s. 1815–1818.
  • Elgarøy, Øystein & Pethick, Christopher (1999). Absence of fragmentation of the condensate in a model for bosons in a trap. Physical Review A. Atomic, Molecular, and Optical Physics (PRA). ISSN 1050-2947. 59(2), s. 1711–1714.
  • Elgarøy, Øystein; Engvold, Oddbjørn & Lund, N. (1999). The Wilson-Bappu effect of the MgIIk line - dependence on stellar temperature, activity and metallicity. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 343, s. 222–228.
  • Elgarøy, Øystein & Hjorth-Jensen, Morten (1998). Nucleon-nucleon phase shifts and pairing in infinite matter. Physical Review C. Nuclear Physics. ISSN 0556-2813. 57, s. 1174–1177.
  • Elgarøy, Øystein; Engvik, Lars; Hjorth-Jensen, Morten & Osnes, Eivind (1998). Minimal relativity and <SUP>3</SUP>S<SUB>1</SUB>-<SUP>3</SUP>D<SUB>1</SUB> pairing in symmetric nuclear matter. Physical Review C. Nuclear Physics. ISSN 0556-2813. 57, s. 1069–1072.
  • Baldo, Marcello; Elgarøy, Øystein; Engvik, Lars; Hjorth-Jensen, Morten & Schulze, Hans-Josef (1998). Modern nucleon-nucleon potentials and 3P<SUB>2</SUB>-3F<SUB>2</SUB> pairing in neutron matter. Physical Review C. Nuclear Physics. ISSN 0556-2813. 58, s. 1921–1928.
  • Blasio, Fabio V. de; Hjorth-Jensen, Morten; Elgarøy, Øystein; Engvik, Lars; Lazzari, Gianluca & Baldo, Marcello [Vis alle 7 forfattere av denne artikkelen] (1997). Coherence lengths of neutron superfluids. Physical Review C. Nuclear Physics. ISSN 0556-2813. 56, s. 2332–2335.
  • Elgarøy, Øystein; Engvik, Lars; Hjorth-Jensen, Morten & Osnes, Eivind (1996). Model-space approach to <sup>1</sup>S<sub>0</sub> neutron and proton pairing in neutron star matter with the Bonn meson-exchange potentials. Nuclear Physics A. ISSN 0375-9474. 604, s. 466–490.
  • Elgarøy, Øystein; Engvik, Lars; Osnes, Eivind; Blasio, Fabio V. de; Lazzari, Gianluca & Hjorth-Jensen, Morten (1996). Emissivities of neutrinos in neutron stars. Physical Review Letters. ISSN 0031-9007. 76, s. 1994–1997.
  • Elgarøy, Øystein; Engvik, Lars; Hjorth-Jensen, Morten & Osnes, Eivind (1996). Triplet pairing of neutrons in _b-stable neutron star matter. Nuclear Physics A. ISSN 0375-9474. 607, s. 425–441.
  • Elgarøy, Øystein; Engvik, Lars; Hjorth-Jensen, Morten & Osnes, Eivind (1996). Superfluidity in _b-stable neutron star matter. Physical Review Letters. ISSN 0031-9007. 77, s. 1428–1431.
  • Elgarøy, Øystein; Engvik, Lars; Osnes, Eivind; Blasio, Fabio V. de; Lazzari, Gianluca & Hjorth-Jensen, Morten (1996). Superfluidity and neutron star crust matter. Physical Review D. Particles and fields. ISSN 0556-2821. 54, s. 1848–1851.
  • Elgarøy, Øystein; Jorås, P; Engvold, Oddbjørn; Jensen, E; Pettersen, Bjørn Ragnvald & Ayres, T. R. [Vis alle 11 forfattere av denne artikkelen] (1988). Ultraviolet emission lines and optical photometry of the flare star AT Microskopii. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 193, s. 211–221.

Se alle arbeider i Cristin

  • Einevoll, Gaute & Elgarøy, Øystein (2020). Om universet og Big Bang teorien. [Internett]. Podcast: Vett og vitenskap med Gaute Einevoll.
  • Elgarøy, Øystein & Bøe, Maria Vetleseter (2019). Er hele universets energi bevart? Naturfag. ISSN 1504-4564. s. 14–16.
  • Elgarøy, Øystein (2015). Inflasjon: Da universet løp løpsk. I Kristiansen, Jostein Riiser; Evans, Anna Kathinka Dalland; Svensen, Henrik; Samset, Bjørn Hallvard & Byhring, Hanne Sigrun (Red.), Stjerneklart – siste nytt fra verdensrommet. Spartacus. ISSN 9788243009738. s. 61–71.
  • Elgarøy, Øystein (2015). Hvordan finner man mørk energi? I Kristiansen, Jostein Riiser; Evans, Anna Kathinka Dalland; Svensen, Henrik; Samset, Bjørn Hallvard & Byhring, Hanne Sigrun (Red.), Stjerneklart – siste nytt fra verdensrommet. Spartacus. ISSN 9788243009738. s. 166–177.
  • Elgarøy, Øystein (2006). Upper limits on neutrino masses from cosmology.
  • Elgarøy, Øystein & Lahav, Ofer (2006). Sub-eV upper limits on neutrino masses from cosmology.
  • Elgarøy, Øystein & Lemstad, Frank (1999). Christopher Hansteen og jordmagnetismen. Astronomisk tidsskrift. ISSN 0004-6345. 32(3), s. 12–17.
  • Elgarøy, Øystein & Hjorth-Jensen, Morten (1998). Properties of Pairing Correlations in Infinite Nuclear Matter.
  • Valberg, Pål; Elgarøy, Øystein & Mota, David (2018). On the theory of dark matter superfluidity. Universitetet i Oslo.
  • Sand, Odd Petter & Elgarøy, Øystein (2016). Massive neutrinos and spherical collapse in LCDM and DGP gravity. Universitetet i Oslo.
  • Elgarøy, Øystein (1999). Superfluidity in Infinite Nuclear Systems. Fysisk institutt, UiO.
  • Elgarøy, Øystein; Engeland, Torgeir; Hjorth-Jensen, Morten & Osnes, Eivind (1999). Pairing correlations, from finite nuclei to infinite matter. Los Alamos National Laboratory.
  • Vidanya, Isaac; Polls, Artur; Ramos, Angels; Elgarøy, Øystein; Engvik, Lars & Hjorth-Jensen, Morten (1999). Properties of _b stable neutron star matter with hyperons. Los Alamos National Laboratory.

Se alle arbeider i Cristin

Publisert 3. nov. 2010 15:19 - Sist endret 15. nov. 2018 16:04