Showing 341 - 360 results of 597 for search '"photosphere"', query time: 0.24s Refine Results
  1. 341

    Solar-MACH: An open-source tool to analyze solar magnetic connection configurations by Jan Gieseler, Nina Dresing, Christian Palmroos, Johan L. Freiherr von Forstner, Johan L. Freiherr von Forstner, Daniel J. Price, Rami Vainio, Athanasios Kouloumvakos, Laura Rodríguez-García, Domenico Trotta, Vincent Génot, Arnaud Masson, Markus Roth, Astrid Veronig

    Published 2023-02-01
    “…In close vicinity of the Sun, a Potential Field Source Surface (PFSS) model can be applied to connect the HMF to the solar photosphere. Solar-MACH is especially aimed at providing publication-ready figures for the analyses of Solar Energetic Particle events (SEPs) or solar transients such as Coronal Mass Ejections (CMEs). …”
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    Article
  2. 342

    The Inner Disk Rim of HD 163296: Linking Radiative Hydrostatic Models with Infrared Interferometry by Ondřej Chrenko, Mario Flock, Takahiro Ueda, Antoine Mérand, Myriam Benisty, Raúl O. Chametla

    Published 2024-01-01
    “…We find that when the cooling efficiency is reduced, the infrared photosphere at the rim becomes hotter, leading to an increase in R _hl sufficient to match the observations. …”
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    Article
  3. 343

    Magnetohydrodynamic Poynting Flux Vortices in the Solar Atmosphere and Their Role in Concentrating Energy by Suzana S. A. Silva, Gary Verth, Erico L. Rempel, Istvan Ballai, Shahin Jafarzadeh, Viktor Fedun

    Published 2024-01-01
    “…This energy mapping reveals the presence of transport barriers in the lower atmosphere, restricting the amount of magnetic energy from the photosphere reaching the chromosphere and corona. Interacting kinematic and magnetic vortices create energy channels, breaking through these barriers and allowing three times more energy input from photospheric motions to reach the upper atmosphere than before the vortices formed. …”
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    Article
  4. 344

    Numerical Modeling of the Physical Mechanism of Anomalous Heating of the Solar Atmosphere by Mayorov Alexander, Romanov Valery, Romanov Konstantin, Romanov Dmitry

    Published 2020-03-01
    “…In model calculations, the temperature decreases monotonically from 5700 K at the photosphere level as the altitude increases, and the energy flow is formed due to the radiant and kinetic thermal conductivity. …”
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    Article
  5. 345

    High-resolution Spectroscopy of SN 2023ixf’s First Week: Engulfing the Asymmetric Circumstellar Material by Nathan Smith, Jeniveve Pearson, David J. Sand, Ilya Ilyin, K. Azalee Bostroem, Griffin Hosseinzadeh, Manisha Shrestha

    Published 2023-01-01
    “…We find that CSM lines disappear after a few days because the asymmetric CSM is engulfed by the supernova photosphere.…”
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    Article
  6. 346

    YSOVAR: MID-INFRARED VARIABILITY IN NGC 1333 by Rebull, L. M., Stauffer, J. R., Cody, A. M., Hillenbrand, L. A., Poppenhaeger, K., Wolk, S. J., Hora, J., Hernandez, J., Bayo, A., Covey, K., Forbrich, J., Gutermuth, R., Plavchan, P., Song, I., Bouy, H., Terebey, S., Cuillandre, J. C., Allen, L. E., Guenther, Hans Moritz, Morales-Calderon, M.

    Published 2016
    “…This may mean that the periodic signal is primarily from the disk, not the photosphere, in those cases. We find 9 variables likely to be "dippers," where texture in the disk occults the central star, and 11 likely to be "bursters," where accretion instabilities create brightness bursts. …”
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    Article
  7. 347

    YSOVAR: MID-INFRARED VARIABILITY AMONG YSOs IN THE STAR FORMATION REGION GGD12-15 by Wolk, Scott J., Poppenhaeger, Katja, Cody, A. M., Rebull, L. M., Forbrich, J., Gutermuth, R. A., Hillenbrand, L. A., Plavchan, P., Stauffer, J. R., Covey, K. R., Song, Inseok, Guenther, Hans Moritz

    Published 2016
    “…Most of the stars with IR excess relative to a photosphere show large amplitude (>0.1 mag) mid-infrared (mid-IR) variability. …”
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    Article
  8. 348

    An HST/STIS Optical Transmission Spectrum of Warm Neptune GJ 436b by Lothringer, Joshua D., Benneke, Björn, Crossfield, Ian J. M., Henry, Gregory W., Morley, Caroline, Dragomir, Diana, Barman, Travis, Knutson, Heather, Kempton, Eliza, Fortney, Jonathan, McCullough, Peter, Howard, Andrew W., Dragomir, Diana

    Published 2019
    “…Only the transit spectrum of GJ 1214b is well fit by a model with stellar plages on the photosphere of the host star. Our photometric monitoring of the host star reveals a stellar rotation rate of 44.1 days and an activity cycle of 7.4 years. …”
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    Article
  9. 349

    Measuring the Temperature of Starspots from Multi-filter Photometry by Maria C. Schutte, Leslie Hebb, John P. Wisniewski, Caleb I. Cañas, Jessica E. Libby-Roberts, Andrea S. J. Lin, Paul Robertson, Gumundur Stefánsson

    Published 2023-01-01
    “…The contrast of the spot, i.e., the ratio of the integrated flux of a darker spot region to the star's photosphere, is calculated for a range of filters and spot temperatures. …”
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    Article
  10. 350

    Can Proton Beam Heating Flare Models Explain Sunquakes? by Viacheslav M. Sadykov, John T. Stefan, Alexander G. Kosovichev, Andrey M. Stejko, Adam F. Kowalski, Joel C. Allred, Graham S. Kerr

    Published 2023-01-01
    “…Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI) observations reveal a class of solar flares with substantial energy and momentum impacts in the photosphere, concurrent with white-light emission and helioseismic responses, known as sunquakes. …”
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    Article
  11. 351
  12. 352

    Spectroscopic r-process Abundance Retrieval for Kilonovae. II. Lanthanides in the Inferred Abundance Patterns of Multicomponent Ejecta from the GW170817 Kilonova by Nicholas Vieira, John J. Ruan, Daryl Haggard, Nicole M. Ford, Maria R. Drout, Rodrigo Fernández

    Published 2024-01-01
    “…As expected from photometric modeling, this component emerges as the ejecta expands, the photosphere recedes, and the earlier bluer component dims. …”
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    Article
  13. 353

    The Science of Sungrazers, Sunskirters, and Other Near-Sun Comets by Jones, Geraint H, Knight, Matthew M, Battams, Karl, Boice, Daniel C, Brown, John, Giordano, Silvio, Raymond, John, Snodgrass, Colin, Steckloff, Jordan K, Weissman, Paul, Fitzsimmons, Alan, Lisse, Carey, Opitom, Cyrielle, Birkett, Kimberley S, Bzowski, Maciej, Decock, Alice, Mann, Ingrid, Ramanjooloo, Yudish, McCauley, Patrick, Jones, Geraint H., Knight, Matthew M., Boice, Daniel C., Birkett, Kimberley S., Steckloff, Jordan K.

    Published 2018
    “…Finally, comets with orbits that intersect the solar photosphere are termed sundivers. We summarize past studies of these objects, as well as the instruments and facilities used to study them, including space-based platforms that have led to a recent revolution in the quantity and quality of relevant observations. …”
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    Article
  14. 354

    NuSTAR OBSERVATION OF A TYPE I X-RAY BURST FROM GRS 1741.9-2853 by Krivonos, Roman A., Tomsick, John A., Bachetti, Matteo, Boggs, Steven E., Chakrabarty, Deepto, Christensen, Finn E., Craig, William W., Hailey, Charles J., Harrison, Fiona A., Hong, Jaesub, Mori, Kaya, Stern, Daniel, Zhang, William W., Barriere, Nicolas M.

    Published 2015
    “…A bright, 800 s long, H-triggered mixed H/He thermonuclear Type I burst with mild photospheric radius expansion (PRE) was present during the second observation. …”
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  15. 355

    The INSPIRESat-1: mission, science, and engineering by Chandran, Amal, Fang, Tzu-Wei, Chang, Loren, Hari, Priyadarshan, Woods, Thomas N., Chao, Chi-Kuang, Kohnert, Richard, Verma, Ankit, Boyajian, Spencer, Duann, Yi, Evonosky, William, Kompella, Mallikarjun, Rong, Tsai-Lin, Kumar, Anant, Srivastava, Sarthak, Schwab, Bennet, Sewell, Robert, Sarpotdar, Mayuresh

    Published 2022
    “…Secondly, IS-1 aims to provide a greater understanding of why the Sun's corona is orders of magnitude hotter than the photosphere, why there is an abundance of elements change during different solar events, and how these events (observed with greater soft x-ray fidelity) affect the earth's ionosphere. …”
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    Journal Article
  16. 356

    The first post-Kepler brightness dips of KIC 8462852 by Boyajian, TS, Alonso, R, Ammerman, A, Armstrong, D, Ramos, AA, Barkaoui, K, Beatty, TG, Benkhaldoun, Z, Benni, P, Bentley, R, Berdyugin, A, Berdyugina, S, Bergeron, S, Bieryla, A, Blain, MG, Blanco, AC, Bodman, EHL, Boucher, A, Bradley, M, Brincat, SM, Brink, TG, Briol, J, Brown, DJA, Budaj, J, Burdanov, A, Cale, B, Carbo, MA, Garcia, RC, Clark, WJ, Clayton, GC, Clem, JL, Coker, PH, Cook, EM, Copperwheat, CM, Curtis, J, Cutri, RM, Cseh, B, Cynamon, CH, Daniels, AJ, Davenport, JRA, Deeg, HJ, Lorenzo, RD, Jaeger, TD, Desrosiers, J-B, Dolan, J, Dowhos, DJ, Dubois, F, Durkee, R, Dvorak, S, Easley, L, Edwards, N, Ellis, TG, Erdelyi, E, Ertel, S, Farfán, RG, Farihi, J, Filippenko, AV, Foxell, E, Gandolfi, D, Garcia, F, Giddens, F, Gillon, M, González-Carballo, J-L, González-Fernández, C, Hernández, JIG, Graham, KA, Greene, KA, Gregorio, J, Hallakoun, N, Hanyecz, O, Harp, GR, Henry, GW, Herrero, E, Hildbold, CF, Hinzel, D, Holgado, G, Ignácz, B, Ivanov, VD, Jehin, E, Jermak, HE, Johnston, S, Kafka, S, Kalup, C, Kardasis, E, Kaspi, S, Kennedy, GM, Kiefer, F, Kielty, CL, Kessler, D, Kiiskinen, H, Killestein, TL, King, RA, Kollar, V, Korhonen, H, Kotnik, C, Könyves-Tóth, R, Kriskovics, L, Krumm, N, Krushinsky, V, Kundra, E, Lachapelle, F-R, Lacourse, D, Lake, P, Lam, K, Lamb, GP, Lane, D, Lau, MW, Lewin, P, Lintott, C, Lisse, C, Logie, L, Longeard, N, Villanueva, ML, Ludington, EW, Mainzer, A, Malo, L, Maloney, C, Mann, A, Mantero, A, Marengo, M, Marchant, J, González, MJM, Masiero, JR, Mauerhan, JC, Mccormac, J, Mcneely, A, Meng, HYA, Miller, M, Molnar, LA, Morales, JC, Morris, BM, Muterspaugh, MW, Nespral, D, Nugent, CR, Nugent, KM, Odasso, A, O'keeffe, D, Oksanen, A, O'meara, JM, Ordasi, A, Osborn, H, Ott, JJ, Parks, JR, Perez, DR, Petriew, V, Pickard, R, Pál, A, Plavchan, P, Plaza, CW, Pollacco, D, Nuñez, FP, Pozuelos, FJ, Rau, S, Redfield, S, Relles, H, Ribas, I, Richards, J, Saario, JLO, Safron, EJ, Sallai, JM, Sárneczky, K, Schaefer, BE, Schumer, CF, Schwartzendruber, M, Siegel, MH, Siemion, APV, Simmons, BD, Simon, JD, Simón-Diaz, S, Sitko, ML, Socas-Navarro, H, Sódor, Á, Starkey, D, Steele, IA, Stone, G, Street, RA, Sullivan, T, Suomela, J, Swift, JJ, Szabó, GM, Szabó, R, Szakáts, R, Szalai, T, Tanner, AM, Toledo-Padrón, B, Tordai, T, Triaud, AHMJ, Turner, JD, Ulowetz, JH, Urbanik, M, Vanaverbeke, S, Vanderburg, A, Vida, K, Vietje, BP, Vinkó, J, Braun, KV, Waagen, EO, Walsh, D, Watson, CA, Weir, RC, Wenzel, K, Williamson, MW, Wright, JT, Wyatt, MC, Zheng, W, Zsidi, G

    Published 2018
    “…Therefore, our data are inconsistent with dip models that invoke optically thick material, but rather they are in-line with predictions for an occulter consisting primarily of ordinary dust, where much of the material must be optically thin with a size scale Lt1 μm, and may also be consistent with models invoking variations intrinsic to the stellar photosphere. Notably, our data do not place constraints on the color of the longer-term "secular" dimming, which may be caused by independent processes, or probe different regimes of a single process.…”
    Journal article
  17. 357

    Characterizing 3D Magnetic Structures in Sunspot Light Bridges by Ju Jing, Nian Liu, Jeongwoo Lee, Yan Xu, Wenda Cao, Haimin Wang

    Published 2023-01-01
    “…We employed: (1) the high-spatial-resolution spectropolarimetric data obtained by the Near InfraRed Imaging Spectropolarimeter (NIRIS) of the 1.6 m Goode Solar Telescope (GST) for studying the magnetic structure at the photosphere, and (2) the nonlinear force-free field (NLFFF) models, extrapolated from both the photospheric magnetogram from GST/NIRIS and from the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory, for studying the three-dimensional (3D) magnetic structure on a larger scale. …”
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    Article
  18. 358

    Magnetic Fields in Solar Plage Regions: Insights from High-sensitivity Spectropolarimetry by J. M. da Silva Santos, K. Reardon, G. Cauzzi, T. Schad, V. Martínez Pillet, A. Tritschler, F. Wöger, R. Hofmann, J. Stauffer, H. Uitenbroek

    Published 2023-01-01
    “…While previous studies have shed light on the properties of plage magnetic fields in the photosphere, there are still challenges in measuring the overlying chromospheric magnetic fields, which are crucial to understanding the overall heating and dynamics. …”
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    Article
  19. 359

    Solar and auroral evidence for an intense recurrent geomagnetic storm during December in AD 1128 by D. M. Willis, D. M. Willis, D. M. Willis, F. R. Stephenson

    Published 2001-03-01
    “…</b>Magnetospheric physics (auroral phenomena; storms and substorms) – Solar physics, astrophysics and astronomy (photosphere and chromosphere)…”
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    Article
  20. 360

    Assessing the Performance of the ADAPT and AFT Flux Transport Models Using In Situ Measurements from Multiple Satellites by Kalman J. Knizhnik, Micah J. Weberg, Elena Provornikova, Harry P. Warren, Mark G. Linton, Shaheda Begum Shaik, Yuan-Kuen Ko, Samuel J. Schonfeld, Ignacio Ugarte-Urra, Lisa A. Upton

    Published 2024-01-01
    “…A key ingredient for these models is the input photospheric magnetic field map that provides the boundary condition for the coronal portion of many heliospheric models. …”
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    Article