Results 41 to 50 of about 1,379,332 (142)

Probing Lorentz Invariance Violation with Absorption of Astrophysical γ-Rays by Solar Photons

The Astrophysical Journal
We compute in detail the absorption optical depth for astrophysical γ -ray photons interacting with solar photons to produce electron–positron pairs. This effect is greatest for γ -ray sources at small angular distances from the Sun, reaching optical ...
Justin D. Finke, Parshad Patel
doaj   +1 more source

Modeling images of the Quiet Sun in the extreme ultraviolet [PDF]

, 2007
15 pagesInternational audienceWe address the statistical modeling of solar images provided by the Extreme ultraviolet Imaging Telescope (EIT) onboard the Solar and Heliospheric Observatory (SoHO, a joint ESA/NASA mission).
Chainais, Pierre, Hochedez, Jean-François, Delouille, Véronique   +2 more
core   +1 more source

A Statistical Survey of Faint Solar X-Ray Transients Observed by NuSTAR

The Astrophysical Journal
In this paper, we use a highly sensitive telescope to characterize solar X-ray transients ranging from microflares in active regions down to weakly energetic brightenings in the quiet Sun.
Reed B. Masek, Lindsay Glesener, Jessie Duncan, Kekoa Lasko, Natália Bajnoková, Mary Davenport, Marianne Peterson, Ian Markano, Zasha Avery, Kristopher Cooper, Iain G. Hannah, Brian W. Grefenstette, Stephen M. White, Hugh Hudson, Säm Krucker, David M. Smith, Sarah Paterson   +16 more
doaj   +1 more source

Rocket observations of the structure and dynamics of the mesosphere during the quiet sun period [PDF]

, 1965
Mesosphere structure and dynamics during quiet sun period from rocket ...
Theon, J., Smith, W. S., Nordberg, W., Katchen, L.   +3 more
core  

A nanoflare model of quiet Sun EUV emission [PDF]

, 2006
Nanoflares have been proposed as the main source of heating of the solar corona. However, detecting them directly has so far proved elusive, and extrapolating to them from the properties of larger brightenings gives unreliable estimates of the power ...
Pauluhn, A., S. K. Solanki, A. Pauluhn, Solanki, S., Pauluhn, A. (author), Solanki, S.K. (author)   +5 more
core   +1 more source

Quiet Sun Magnetism from ViSP Data Multiline Inversions Around 630.1 nm

The Astrophysical Journal
Quiet Sun magnetism plays an important role in the global energy balance of the solar atmosphere. The study of the magnetism of the quiet Sun has been a major effort in the last decades, and, as a result, very important advances in our knowledge have ...
J. C. Trelles Arjona
doaj   +1 more source

Probing Upflowing Regions in the Quiet Sun and Coronal Holes. [PDF]

Sol Phys, 2021
Schwanitz C, Harra L, Raouafi NE, Sterling AC, Moreno Vacas A, Del Toro Iniesta JC, Orozco Suárez D, Hara H.   +7 more
europepmc   +1 more source

Can We Distinguish the Source Region Location of Filament/Prominence Eruptions from the Sun-as-a-star Hα Spectrum?

The Astrophysical Journal
Solar filament/prominence eruptions can significantly perturb geospace when originating from favorable source locations and directions. While stellar analogs have been recently reported, the disk locations and magnetic environments of their source ...
Junyi Zhang, Yijun Hou, Xiaofeng Liu, Ting Li, Shihao Rao, Ye Qiu, HuiPing Jin, Yingjie Cai, Yangrui Chen, Chuan Li   +9 more
doaj   +1 more source

L’École du soir Cinéma #3 | In the Year of the Quiet Sun

, 2023
A screening event of the Otolith Group's film In the Year of the Quiet Sun (2013) with a response from artist Anne-Marie ...
Copestake , Anne-Marie, Hao, Sophia Yadong ; id_orcid   +1 more
core   +2 more sources

Thermal structuring of the quiet solar corona

Astronomy & Astrophysics
Context. The quiet solar atmosphere is populated with plasma loops that are typically observed in the ultraviolet (UV) and extreme-ultraviolet (EUV) wavelengths.
Milanović N., Peter H., Chitta L. P., Young P. R.   +3 more
doaj   +1 more source