Juan Martinez Sykora

Martinez-Sykora, Juan; Hansteen, Viggo Haraldson; De Pontieu, Bart Walter & Landi, Enrico (2022). A Novel Inversion Method to Determine the Coronal Magnetic Field Including the Impact of Bound-Free Absorption. The Astrophysical Journal (ApJ). ISSN 0004-637X. 938(1). doi: 10.3847/1538-4357/ac8d5b. Full text in Research Archive

Wargnier, Q.M.; Martinez-Sykora, Juan; Hansteen, Viggo Haraldson & De Pontieu, Bart Walter (2022). Detailed Description of the Collision Frequency in the Solar Atmosphere. The Astrophysical Journal (ApJ). ISSN 0004-637X. 933(2). doi: 10.3847/1538-4357/ac6e62. Full text in Research Archive

De Pontieu, Bart Walter; Testa, Paola; Martinez-Sykora, Juan; Antolin, Patrick; Karampelas, Konstantinos & Hansteen, Viggo Haraldson [Show all 26 contributors for this article] (2022). Probing the Physics of the Solar Atmosphere with the Multi-slit Solar Explorer (MUSE). I. Coronal Heating. The Astrophysical Journal (ApJ). ISSN 0004-637X. 926(1). doi: 10.3847/1538-4357/ac4222. Full text in Research Archive

Antolin, Patrick; Martinez-Sykora, Juan & Şahin, Seray (2022). Thermal Instability-Induced Fundamental Magnetic Field Strands in the Solar Corona. Astrophysical Journal Letters. ISSN 2041-8205. 926(2). doi: 10.3847/2041-8213/ac51dd. Full text in Research Archive

Cheung, Mark C. M.; Martinez-Sykora, Juan; Testa, Paola; De Pontieu, Bart Walter; Chintzoglou, Georgios & Rempel, Matthias [Show all 27 contributors for this article] (2022). Probing the Physics of the Solar Atmosphere with the Multi-slit Solar Explorer (MUSE). II. Flares and Eruptions. The Astrophysical Journal (ApJ). ISSN 0004-637X. 926(1). doi: 10.3847/1538-4357/ac4223. Full text in Research Archive

Schmit, Don; Martinez-Sykora, Juan; Pereira, Tiago & Asensio Ramos, Andrés (2021). Probing Uncertainties in Diagnostics of a Synthetic Chromosphere. The Astrophysical Journal (ApJ). ISSN 0004-637X. 913(1). doi: 10.3847/1538-4357/abf4d2.

De Pontieu, Bart Walter; Polito, Vanessa; Hansteen, Viggo Haraldson; Testa, Paola; Reeves, Katharine K. & Antolin, Patrick [Show all 14 contributors for this article] (2021). A New View of the Solar Interface Region from the Interface Region Imaging Spectrograph (IRIS). Solar Physics. ISSN 0038-0938. 296. doi: 10.1007/s11207-021-01826-0. Full text in Research Archive

Bose, Souvik; Rouppe van der Voort, Luc; Joshi, Jayant; de Jorge Henriques, Vasco Manuel; Nóbrega Siverio, Daniel Elias & Martinez-Sykora, Juan [Show all 7 contributors for this article] (2021). Evidence of the multi-thermal nature of spicular downflows. Impact on solar atmospheric heating. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 654(51). doi: 10.1051/0004-6361/202141404. Full text in Research Archive

Chintzoglou, Georgios; De Pontieu, Bart Walter; Martinez-Sykora, Juan; Hansteen, Viggo; de la Cruz Rodriguez, Jaime & Szydlarski, Mikolaj Marcin [Show all 10 contributors for this article] (2021). ALMA and IRIS Observations of the Solar Chromosphere. II. Structure and Dynamics of Chromospheric Plages. The Astrophysical Journal (ApJ). ISSN 0004-637X. 906(2). doi: 10.3847/1538-4357/abc9b0.

Chintzoglou, Georgios; De Pontieu, Bart Walter; Martinez-Sykora, Juan; Hansteen, Viggo; de la Cruz Rodriguez, Jaime & Szydlarski, Mikolaj Marcin [Show all 10 contributors for this article] (2021). ALMA and IRIS Observations of the Solar Chromosphere. I. An On-Disk Type II Spicule. The Astrophysical Journal (ApJ). ISSN 0004-637X. 906(2). doi: 10.3847/1538-4357/abc9b1.

Martinez-Sykora, Juan; Szydlarski, Mikolaj Marcin; Hansteen, Viggo & De Pontieu, Bart Walter (2020). On the Velocity Drift between Ions in the Solar Atmosphere. The Astrophysical Journal (ApJ). ISSN 0004-637X. 900(2). doi: 10.3847/1538-4357/ababa3.

Rouppe van der Voort, Luc; De Pontieu, Bart Walter; Carlsson, Mats; de la Cruz Rodriguez, Jaime; Bose, Souvik & Chintzoglou, Georgios [Show all 33 contributors for this article] (2020). High-resolution observations of the solar photosphere, chromosphere, and transition region: A database of coordinated IRIS and SST observations. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 641. doi: 10.1051/0004-6361/202038732. Full text in Research Archive

Martinez-Sykora, Juan; De Pontieu, Bart Walter; de la Cruz Rodriguez, Jaime & Chintzoglou, Georgios (2020). The Formation Height of Millimeter-wavelength Emission in the Solar Chromosphere. Astrophysical Journal Letters. ISSN 2041-8205. 891(1). doi: 10.3847/2041-8213/ab75ac.

Nóbrega Siverio, Daniel Elias; Martinez-Sykora, Juan; Moreno-Insertis, Fernando & Carlsson, Mats (2020). Ambipolar diffusion in the Bifrost code. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 638. doi: 10.1051/0004-6361/202037809. Full text in Research Archive

Martinez-Sykora, Juan; Leenarts, Jorrit; De Pontieu, Bart Walter; Nóbrega Siverio, Daniel Elias; Hansteen, Viggo & Carlsson, Mats [Show all 7 contributors for this article] (2020). Ion–neutral Interactions and Nonequilibrium Ionization in the Solar Chromosphere. The Astrophysical Journal (ApJ). ISSN 0004-637X. 889(2). doi: 10.3847/1538-4357/ab643f.

Nóbrega Siverio, Daniel Elias; Moreno-Insertis, Fernando; Martinez-Sykora, Juan; Carlsson, Mats & Szydlarski, Mikolaj Marcin (2020). Nonequilibrium ionization and ambipolar diffusion in solar magnetic flux emergence processes. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 633. doi: 10.1051/0004-6361/201936944. Full text in Research Archive

De Pontieu, Bart Walter; Martinez-Sykora, Juan; Testa, Paola; Winebarger, Amy R.; Daw, Adrian N. & Hansteen, Viggo [Show all 8 contributors for this article] (2019). The Multi-slit Approach to Coronal Spectroscopy with the Multi-slit Solar Explorer (MUSE). The Astrophysical Journal (ApJ). ISSN 0004-637X. 888(1). doi: 10.3847/1538-4357/ab5b03. Full text in Research Archive

Cheung, Mark C. M.; De Pontieu, Bart Walter; Martinez-Sykora, Juan; Testa, Paola; Winebarger, Amy R. & Daw, Adrian N. [Show all 11 contributors for this article] (2019). Multi-component Decomposition of Astronomical Spectra by Compressed Sensing. The Astrophysical Journal (ApJ). ISSN 0004-637X. 882(1). doi: 10.3847/1538-4357/ab263d. Full text in Research Archive

Martinez-Sykora, Juan; Hansteen, Viggo; Gudiksen, Boris Vilhelm; Carlsson, Mats; De Pontieu, Bart Walter & Gošić, Milan (2019). On the Origin of the Magnetic Energy in the Quiet Solar Chromosphere. The Astrophysical Journal (ApJ). ISSN 0004-637X. 878(1). doi: 10.3847/1538-4357/ab1f0b. Full text in Research Archive

Cheung, M. C. M.; Rempel, M.; Chintzoglou, G.; Chen, F.; Testa, Paola & Martinez-Sykora, Juan [Show all 14 contributors for this article] (2019). A comprehensive three-dimensional radiative magnetohydrodynamic simulation of a solar flare. Nature Astronomy. ISSN 2397-3366. 3, p. 160–166. doi: 10.1038/s41550-018-0629-3.

Moreno-Insertis, F.; Hansteen, Viggo; Martinez-Sykora, Juan & Munoz, D. (2018). Small-scale Magnetic Flux Emergence in the Quiet Sun. Astrophysical Journal Letters. ISSN 2041-8205. 859(2). doi: 10.3847/2041-8213/aac648. Full text in Research Archive

Martinez-Sykora, Juan; De Moortel, Ineke; De Pontieu, Bart Walter; Hansteen, Viggo & Carlsson, Mats (2018). Impact of Type II Spicules in the Corona: Simulations and Synthetic Observables. The Astrophysical Journal (ApJ). ISSN 0004-637X. 860(2). doi: 10.3847/1538-4357/aac2ca. Full text in Research Archive

Chintzoglou, G.; De Pontieu, Bart Walter; Martinez-Sykora, Juan; Mendes Domingos Pereira, Tiago; Vourlidas, A. & Beltran, Samuel Tun (2018). Bridging the gap: Capturing the Lyα Counterpart of a Type-II Spicule and its Heating Evolution with VAULT2.0 and IRIS Observations. The Astrophysical Journal (ApJ). ISSN 0004-637X. 857(1). doi: 10.3847/1538-4357/aab607. Full text in Research Archive

Nobrega-Siverio, Daniel; Martinez-Sykora, Juan; Moreno-Insertis, F. & Rouppe van der Voort, Luc (2017). Surges and Si IV Bursts in the Solar Atmosphere: Understanding IRIS and SST Observations through RMHD Experiments. The Astrophysical Journal (ApJ). ISSN 0004-637X. 850(2). doi: 10.3847/1538-4357/aa956c. Full text in Research Archive

De Pontieu, Bart Walter; Martinez-Sykora, Juan & Chintzoglou, Georgios (2017). What Causes the High Apparent Speeds in Chromospheric and Transition Region Spicules on the Sun? Astrophysical Journal Letters. ISSN 2041-8205. 849(1). doi: 10.3847/2041-8213/aa9272. Full text in Research Archive

De Pontieu, Bart Walter; De Moortel, I.; Martinez-Sykora, Juan & McIntosh, S. W. (2017). Observations and Numerical Models of Solar Coronal Heating Associated with Spicules. Astrophysical Journal Letters. ISSN 2041-8205. 845(2). doi: 10.3847/2041-8213/aa7fb4. Full text in Research Archive

Martinez-Sykora, Juan; De Pontieu, Bart Walter; Carlsson, Mats; Hansteen, Viggo; Nobrega-Siverio, Daniel & Gudiksen, Boris Vilhelm (2017). Two-dimensional Radiative Magnetohydrodynamic Simulations of Partial Ionization in the Chromosphere. II. Dynamics and Energetics of the Low Solar Atmosphere. The Astrophysical Journal (ApJ). ISSN 0004-637X. 847(1). doi: 10.3847/1538-4357/aa8866. Full text in Research Archive

Martinez-Sykora, Juan; De Pontieu, Bart Walter; Hansteen, Viggo; Rouppe van der Voort, Luc; Carlsson, Mats & Mendes Domingos Pereira, Tiago (2017). On the generation of solar spicules and Alfvenic waves. Science. ISSN 0036-8075. 356(6344), p. 1269–1272. doi: 10.1126/science.aah5412. Full text in Research Archive

Martinez-Sykora, Juan; De Pontieu, Bart Walter; Carlsson, Mats & Hansteen, Viggo (2016). On the Misalignment between Chromospheric Features and the Magnetic Field on the Sun. Astrophysical Journal Letters. ISSN 2041-8205. 831(1). doi: 10.3847/2041-8205/831/1/L1.

Martinez-Sykora, Juan; De Pontieu, Bart Walter; Hansteen, Viggo & Gudiksen, Boris Vilhelm (2016). TIME DEPENDENT NONEQUILIBRIUM IONIZATION of TRANSITION REGION LINES OBSERVED with IRIS. The Astrophysical Journal (ApJ). ISSN 0004-637X. 817(1). doi: 10.3847/0004-637X/817/1/46. Full text in Research Archive

Martinez-Sykora, Juan; Rouppe, Van Der Voort Luc; Carlsson, Mats; De Pontieu, Bart Walter; Mendes Domingos Pereira, Tiago & Boerner, P. [Show all 21 contributors for this article] (2015). Internetwork Chromospheric Bright Grains Observed with IRIS and SST. The Astrophysical Journal (ApJ). ISSN 0004-637X. 803(1). doi: 10.1088/0004-637X/803/1/44. Full text in Research Archive

Martinez-Sykora, Juan; De Pontieu, Bart Walter; Hansteen, Viggo & Carlsson, Mats (2015). The role of partial ionization effects in the chromosphere. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. ISSN 1364-503X. 373(2042). doi: 10.1098/rsta.2014.0268.

De Pontieu, Bart Walter; McIntosh, Scott; Martinez-Sykora, Juan; Peter, Hardi & Mendes Domingos Pereira, Tiago (2015). Why is non-thermal line broadening of spectral lines in the lower transition region of the sun independent of spatial resolution? Astrophysical Journal Letters. ISSN 2041-8205. 799(1). doi: 10.1088/2041-8205/799/1/L12. Full text in Research Archive

Cheung, Mark C. M.; De Pontieu, Bart Walter; Tarbell, Theodore D.; Fu, Y.; Tian, H. & Testa, Paola [Show all 21 contributors for this article] (2015). Homologous helical jets: Observations by IRIS, SDO, and Hinode and magnetic modeling with data-driven simulations. The Astrophysical Journal (ApJ). ISSN 0004-637X. 801(2). doi: 10.1088/0004-637X/801/2/83. Full text in Research Archive

Peter, H.; Tian, H.; Curdt, W.; Schmit, D.; Innes, D. & De Pontieu, Bart Walter [Show all 23 contributors for this article] (2014). Hot explosions in the cool atmosphere of the Sun. Science. ISSN 0036-8075. 346(6207). doi: 10.1126/science.1255726.

Tian, H.; DeLuca, E.E.; Cranmer, S.R.; De Pontieu, Bart Walter; Peter, H. & Martinez-Sykora, Juan [Show all 27 contributors for this article] (2014). Prevalence of small-scale jets from the networks of the solar transition region and chromosphere. Science. ISSN 0036-8075. 346(6207). doi: 10.1126/science.1255711.

Testa, Paola; De Pontieu, Bart Walter; Allred, J.; Carlsson, Mats; Reale, F. & Daw, A. [Show all 24 contributors for this article] (2014). Evidence of nonthermal particles in coronal loops heated impulsively by nanoflares. Science. ISSN 0036-8075. 346(6207). doi: 10.1126/science.1255724.

De Pontieu, Bart Walter; Rouppe, Van Der Voort Luc; McIntosh, S.W.; Pereira, Tiago Mendes Domingos; Carlsson, Mats & Hansteen, Viggo [Show all 24 contributors for this article] (2014). On the prevalence of small-scale twist in the solar chromosphere and transition region. Science. ISSN 0036-8075. 346(6207). doi: 10.1126/science.1255732.

Hansteen, Viggo; De Pontieu, Bart Walter; Carlsson, Mats; Lemen, James R.; Title, Alan M. & Boerner, Paul F.X. [Show all 21 contributors for this article] (2014). The unresolved fine structure resolved: IRIS observations of the solar transition region. Science. ISSN 0036-8075. 346(6207). doi: 10.1126/science.1255757.

Pereira, Tiago Mendes Domingos; De Pontieu, Bart Walter; Carlsson, Mats; Hansteen, Viggo; Tarbell, T.D. & Lemen, J. [Show all 20 contributors for this article] (2014). An interface region imaging spectrograph first view on solar spicules. Astrophysical Journal Letters. ISSN 2041-8205. 792(1). doi: 10.1088/2041-8205/792/1/L15. Full text in Research Archive

Kleint, L.; Antolin, Patrick; Tian, H; Judge, Philip G.; Testa, Paola & De Pontieu, Bart Walter [Show all 21 contributors for this article] (2014). Detection of supersonic downflows and associated heating events in the transition region above sunspots. Astrophysical Journal Letters. ISSN 2041-8205. 789(2). doi: 10.1088/2041-8205/789/2/L42. Full text in Research Archive

Tian, H; DeLuca, E.; Reeves, K. K.; McKillop, S.; De Pontieu, Bart Walter & Martinez-Sykora, Juan [Show all 23 contributors for this article] (2014). HIGH-RESOLUTION OBSERVATIONS OF THE SHOCK WAVE BEHAVIOR FOR SUNSPOT OSCILLATIONS WITH THE INTERFACE REGION IMAGING SPECTROGRAPH. The Astrophysical Journal (ApJ). ISSN 0004-637X. 786(2). doi: 10.1088/0004-637X/786/2/137. Full text in Research Archive

Martinez-Sykora, Juan ; De Pontieu, Bart Walter; Leenaarts, Jorrit; Pereira, Tiago Mendes Domingos; Carlsson, Mats & Hansteen, Viggo [Show all 10 contributors for this article] (2013). A DETAILED COMPARISON BETWEEN THE OBSERVED AND SYNTHESIZED PROPERTIES OF A SIMULATED TYPE II SPICULE. The Astrophysical Journal (ApJ). ISSN 0004-637X. 771(1). doi: 10.1088/0004-637X/771/1/66. Full text in Research Archive

Testa, Paola; De Pontieu, Bart; Martinez-Sykora, Juan ; DeLuca, E.; Hansteen, Viggo & Cirtain, J. [Show all 15 contributors for this article] (2013). OBSERVING CORONAL NANOFLARES IN ACTIVE REGION MOSS. The Astrophysical Journal (ApJ). ISSN 0004-637X. 770(1). doi: 10.1088/2041-8205/770/1/L1.

Testa, Paola; De Pontieu, Bart; Martinez-Sykora, Juan ; Hansteen, Viggo & Carlsson, Mats (2012). INVESTIGATING THE RELIABILITY OF CORONAL EMISSION MEASURE DISTRIBUTION DIAGNOSTICS USING THREE-DIMENSIONAL RADIATIVE MAGNETOHYDRODYNAMIC SIMULATIONS. The Astrophysical Journal (ApJ). ISSN 0004-637X. 758(1). doi: 10.1088/0004-637X/758/1/54.

Martinez-Sykora, Juan (2012). Two Types of Spicules “Observed” in 3D Realistic Models. Astronomical Society of the Pacific Conference Series. ISSN 1050-3390. 454, p. 133–136.

Martinez-Sykora, Juan ; De Pontieu, Bart & Hansteen, Viggo (2012). TWO-DIMENSIONAL RADIATIVE MAGNETOHYDRODYNAMIC SIMULATIONS OF THE IMPORTANCE OF PARTIAL IONIZATION IN THE CHROMOSPHERE. The Astrophysical Journal (ApJ). ISSN 0004-637X. 753(2). doi: 10.1088/0004-637X/753/2/161.

Dalda, A. S.; Martinez-Sykora, Juan ; Bellot Rubio, L. R. & Title, A. (2012). STUDY OF SINGLE-LOBED CIRCULAR POLARIZATION PROFILES IN THE QUIET SUN. The Astrophysical Journal (ApJ). ISSN 0004-637X. 748(1). doi: 10.1088/0004-637X/748/1/38.

Martinez-Sykora, Juan ; De Pontieu, Bart; Testa, Paola & Hansteen, Viggo (2011). FORWARD MODELING OF EMISSION IN SOLAR DYNAMICS OBSERVATORY/ATMOSPHERIC IMAGING ASSEMBLY PASSBANDS FROM DYNAMIC THREE-DIMENSIONAL SIMULATIONS. The Astrophysical Journal (ApJ). ISSN 0004-637X. 743(1). doi: 10.1088/0004-637X/743/1/23.

Tian, H; McIntosh, S.W.; De Pontieu, Bart; Martinez-Sykora, Juan ; Sechler, M. & Wang, X. (2011). TWO COMPONENTS OF THE SOLAR CORONAL EMISSION REVEALED BY EXTREME-ULTRAVIOLET SPECTROSCOPIC OBSERVATIONS. The Astrophysical Journal (ApJ). ISSN 0004-637X. 738(1). doi: 10.1088/0004-637X/738/1/18.

Gudiksen, Boris Vilhelm; Carlsson, Mats; Hayek, Wolfgang; Hansteen, Viggo; Leenaarts, Jorrit & Martinez-Sykora, Juan (2011). The stellar atmosphere simulation code Bifrost. Code description and validation. Astronomy and Astrophysics (A & A). ISSN 0004-6361. 531. doi: 10.1051/0004-6361/201116520.

Martinez-Sykora, Juan ; De Pontieu, Bart; Hansteen, Viggo & McIntosh, Scott (2011). WHAT DO SPECTRAL LINE PROFILE ASYMMETRIES TELL US ABOUT THE SOLAR ATMOSPHERE? The Astrophysical Journal (ApJ). ISSN 0004-637X. 732(2). doi: 10.1088/0004-637X/732/2/84.

Martinez-Sykora, Juan ; Hansteen, Viggo & Moreno-Insertis, F. (2011). ON THE ORIGIN OF THE TYPE II SPICULES: DYNAMIC THREE-DIMENSIONAL MHD SIMULATIONS. The Astrophysical Journal (ApJ). ISSN 0004-637X. 736(1). doi: 10.1088/0004-637X/736/1/9.

De Pontieu, Bart; McIntosh, S.W.; Carlsson, Mats; Hansteen, Viggo; Tarbell, T.D. & Boerner, P. [Show all 9 contributors for this article] (2011). The Origins of Hot Plasma in the Solar Corona. Science. ISSN 0036-8075. 331(6013), p. 55–58. doi: 10.1126/science.1197738.

Sykora, Juan Martinez; Hansteen, Viggo; De Pontieu, Bart & Carlsson, Mats (2009). SPICULE-LIKE STRUCTURES OBSERVED IN THREE-DIMENSIONAL REALISTIC MAGNETOHYDRODYNAMIC SIMULATIONS. The Astrophysical Journal (ApJ). ISSN 0004-637X. 701(2), p. 1569–1581. doi: 10.1088/0004-637X/701/2/1569.

Sykora, Juan Martinez; Hansteen, Viggo & Carlsson, Mats (2009). TWISTED FLUX TUBE EMERGENCE FROM THE CONVECTION ZONE TO THE CORONA. II. LATER STATES. The Astrophysical Journal (ApJ). ISSN 0004-637X. 702(1), p. 129–140. doi: 10.1088/0004-637X/702/1/129.

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