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

“…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. …”
Get full text

Investigating the Effects of Atmospheric Stratification on Coronal Active Region Field Modeling by Oliver Rice, Christopher Prior

“…There exist many different models for such fields, which range in their complexity due to the number of physical effects included in them—one common factor being that they all extrapolate the field up from the photosphere. In this study, we focus on the fact that above the photosphere and below the corona lies the relatively cool and dense chromosphere—which is often neglected in coronal models, due to it being comparatively thin and difficult to model. …”
Get full text

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.

“…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. …”
Get full text

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

“…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. …”
Get full text

The Van Hoof Effect over the Blazhko Cycle by Merieme Chadid

“…We investigate the differential motion between the upper and lower photosphere and between the photosphere and high atmosphere in the RR Lyr star. …”
Get full text

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

“…The second regime applies to planets with lower internal temperatures, so a radiative region forms, but the photosphere still remains outside the Bondi radius. …”
Get full text

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

“…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.…”
Get full text

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

“…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. …”
Get full text

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

“…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.…”
Get full text

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

“…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. …”
Get full text

Magnetic Fields beneath Active Region Coronal Loops by Philip G. Judge, L. Kleint, C. Kuckein

“…We examine the hypothesis that multipolar magnetic fields advected by photospheric granules can contribute to heating the active chromosphere and corona. …”
Get full text

GRB 231129C: Another Thermal Emission Dominated Gamma-Ray Burst by Jia-Ming Chen, Ke-Rui Zhu, Zhao-Yang Peng, Li Zhang

“…Simultaneously, 53% of the spectra can be well fitted by the nondissipative photosphere model, supporting a potential origin from a nondissipative photosphere. …”
Get full text

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

“…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. …”
Get full text

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

“…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

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

“…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. …”
Get full text

Magnetic Fields in the Solar Convection Zone by Yuhong Fan

“…Thus the magnetic fields need to traverse the entire convection zone before they reach the photosphere to form the observed solar active regions. …”
Get full text

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

“…We speculate that oscillations in two of the umbrae have a common origin in the sub-photosphere, resulting in a stronger correlation (>30%). …”
Get full text

Observations of Locally Excited Waves in the Low Solar Atmosphere Using the Daniel K. Inouye Solar Telescope by Shah Mohammad Bahauddin, Catherine E. Fischer, Mark P. Rast, Ivan Milic, Friedrich Woeger, Matthias Rempel, Peter H. Keys, Thomas R. Rimmele

“…Using MPS/University of Chicago MHD radiative magnetohydrodynamic simulations spanning the solar photosphere, the overshoot region, and the lower chromosphere, we identify three acoustic-wave source mechanisms, each occur at a different atmospheric height. …”
Get full text

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

“…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. …”
Get full text

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

“…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