Showing 161 - 180 results of 597 for search '"photosphere"', query time: 0.20s Refine Results
  1. 161

    The abundances of heavy elements in BL138 – red giant of local group fornax dwarf spheroidal galaxy by V.F. Gopka, A.V. Yushchenko, V.A. Yushchenko, A.V. Shavrina, S.M. Andrievsky, Y. Jeong, E.P. Shereta

    Published 2018-08-01
    “…The analysis of these abundances and also previously published investigation of BL138 allowed claiming that the distribution of abundances is different from that in the solar photosphere. The signs of r-process in the abundance pattern of BL138 are not important. …”
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    Article
  2. 162

    Our dynamic sun: 2017 Hannes Alfvén Medal lecture at the EGU by E. Priest, E. Priest

    Published 2017-07-01
    “…A small-scale dynamo may also be operating near the surface of the Sun, generating magnetic fields that thread the lowest layer of the solar atmosphere, the turbulent photosphere. Above the photosphere lies the highly dynamic fine-scale chromosphere, and beyond that is the rare corona at high temperatures exceeding 1 million degrees K. …”
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  3. 163

    Investigations of the MnI 539.47 nm and MnI 542.04 nm lines in solar plages by Vince Ištvan I., Gopasyuk O., Gopasyuk S., Vince Oliver I.

    Published 2005-01-01
    “…We observed the MnI 539.47 nm and 542.04nm line profiles in the quiet photosphere and plage regions in 1998 and 2001, and measured the full widths at half maximum, equivalent widths and depths of these profiles. …”
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    Article
  4. 164

    A Bright First Day for Tidal Disruption Events by Xiaoshan Huang, Shane W. Davis, Yan-fei Jiang

    Published 2023-01-01
    “…The average gas temperature at this photospheric surface is a few × 10 ^4 K, roughly consistent with inferred prepeak photosphere properties for some optical TDEs. …”
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    Article
  5. 165

    The Van Hoof Effect over the Blazhko Cycle by Merieme Chadid

    Published 2023-01-01
    “…We investigate the differential motion between the upper and lower photosphere and between the photosphere and high atmosphere in the RR Lyr star. …”
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    Article
  6. 166

    The Three Regimes of Atmospheric Evaporation for Super-Earths and Sub-Neptunes by Darius Modirrousta-Galian, Jun Korenaga

    Published 2023-01-01
    “…The second regime applies to planets with lower internal temperatures, so a radiative region forms, but the photosphere still remains outside the Bondi radius. …”
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  7. 167

    Element abundance and the physics of solar energetic particles by Donald V. Reames

    Published 2024-03-01
    “…Thus, SEPs provide a measurement of element abundance in the solar corona, distinct from solar wind, and may even better define the photosphere for some elements.…”
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  8. 168

    The abundances of heavy elements in the atmosphere of hyades giant 6 Tauri by V. F. Gopka

    Published 2017-06-01
    “…Comparison of synthetic spectrum of the б Tauri photosphere and high quality spectral atlas of this star permit us to identify absorption lines of iron and heavy elements Z ≥ 30 in the observed spectrum. …”
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    Article
  9. 169

    Magnetic Structure of Sunspots by Juan M. Borrero, Kiyoshi Ichimoto

    Published 2011-09-01
    “…We start by offering a brief description of tools that are most commonly employed to infer the magnetic field in the solar atmosphere with emphasis in the photosphere of sunspots. We then address separately the global and local magnetic structure of sunspots, focusing on the implications of the current observations for the different sunspots models, energy transport mechanisms, extrapolations of the magnetic field towards the Corona, and other issues.…”
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  10. 170

    THE ABUNDANCES OF SOME HEAVY ELEMENTS IN THE ATMOSPHERE OF γ TAURI by A. V. Yushchenko, V. F. Gopka

    Published 2017-07-01
    “…Comparison of synthetic spectrum of the γ Tauri photosphere and high quality spectral atlases of this star permit us to identify absorption lines of rubidium, indium, disprosium, erbium, osmium in the observed spectra. …”
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    Article
  11. 171

    Asymmetric Twisting of Coronal Loops by Gabriele Cozzo, Paolo Pagano, Antonino Petralia, Fabio Reale

    Published 2023-03-01
    “…The bright solar corona entirely consists of closed magnetic loops rooted in the photosphere. Photospheric motions are important drivers of magnetic stressing, which eventually leads to energy release into heat. …”
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    Article
  12. 172

    Outflowing Helium from a Mature Mini-Neptune by Michael Zhang, Fei Dai, Jacob L. Bean, Heather A. Knutson, Federica Rescigno

    Published 2023-01-01
    “…Here W _avg is the equivalent width of the helium absorption, and ρ _XUV is the density of the planet within the XUV photosphere, but the correlation is similarly strong if we use the optical photosphere. …”
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  13. 173

    Spatial and temporal variations of Ca II K line profile shapes in different structures of solar chromosphere. I. Features of individual profiles by Turova I.P., Grigoryeva S.A., Ozhogina O.A.

    Published 2018-12-01
    “…There are, however, structures which begin to differ at the level of the photosphere and continue to differ in the chromosphere. …”
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  14. 174

    Disentangling the Planet from the Star in Late-Type M Dwarfs: A Case Study of TRAPPIST-1g by Wakeford, HR, Lewis, NK, Fowler, J, Bruno, G, Wilson, TJ, Moran, SE, Valenti, J, Batalha, NE, Filippazzo, J, Bourrier, V, Hörst, SM, Lederer, SM, de Wit, J

    Published 2021
    “…We find that TRAPPIST-1 is a 0.08 M ∗, 0.117 R ∗, M8V star with a photospheric effective temperature of 2400 K, with ∼35% 3000 K spot coverage and a very small fraction, <3%, of ∼5800 K hot spot. …”
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    Article
  15. 175

    Pengamatan dan Analisa Sunspot di Stasion Pengamatan Matahari Haurngombong Tanjungsari by Sinambela, Wilson

    Published 1980
    “…Sunspot adalah noda hitam yang terdapat pada permukaan matahari (photosphere), yang merupakan salah satu phenomena aktivitas matahari yang dapat dilihat secara visual dengan bantuan fillter cahaya putih. …”
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  16. 176

    Magnetic Fields in the Solar Convection Zone by Yuhong Fan

    Published 2009-12-01
    “…Thus the magnetic fields need to traverse the entire convection zone before they reach the photosphere to form the observed solar active regions. …”
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    Article
  17. 177

    Re-evaluating hot Jupiter WASP-12b: An update by Tanaka Ichi, Hansen Brad M.S., Barman Travis, Crossfield Ian J.M., Kodama Tadayuki

    Published 2013-04-01
    “…We show that this new spectrum is still consistent with a featureless blackbody, indicating a nearly isothermal photosphere on the planet's day side. Thus the ensemble of occultation measurements for WASP-12b is still insufficient to constrain the planet's atmospheric composition.…”
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  18. 178

    Propagation Properties of Sunspots Umbral Oscillations in Horizontal and Vertical Directions by Wei Wu, Jiang-tao Su, Jie Chen, Xiao-shuai Zhu, Robert Sych

    Published 2023-01-01
    “…We speculate that oscillations in two of the umbrae have a common origin in the sub-photosphere, resulting in a stronger correlation (>30%). …”
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  19. 179

    Artificial Intelligence Assisted Inversion (AIAI): Quantifying the Spectral Features of 56Ni of Type Ia Supernovae by Xingzhuo Chen, Lifan Wang, Lei Hu, Peter J. Brown

    Published 2024-01-01
    “…The neural networks are applied to derive the mass of ^56 Ni in velocity ranges above the photosphere for a sample of 124 well-observed SNe Ia in the TARDIS model context. …”
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  20. 180

    Disentangling the Planet from the Star in Late-Type M Dwarfs: A Case Study of TRAPPIST-1g by Wakeford, HR, Lewis, NK, Fowler, J, Bruno, G, Wilson, TJ, Moran, SE, Valenti, J, Batalha, NE, Filippazzo, J, Bourrier, V, Hörst, SM, Lederer, SM, de Wit, J

    Published 2022
    “…We find that TRAPPIST-1 is a 0.08 M ∗, 0.117 R ∗, M8V star with a photospheric effective temperature of 2400 K, with ∼35% 3000 K spot coverage and a very small fraction, <3%, of ∼5800 K hot spot. …”
    Get full text
    Article