Results 51 to 60 of about 177,945 (292)

A 7 Day Multiwavelength Flare Campaign on AU Mic. I. High-time-resolution Light Curves and the Thermal Empirical Neupert Effect

The Astrophysical Journal, 2023
We present light curves and flares from a 7 day, multiwavelength observational campaign of AU Mic, a young and active dM1e star with exoplanets and a debris disk. We report on 73 unique flares between the X-ray to optical data.
Isaiah I. Tristan, Yuta Notsu, Adam F. Kowalski, Alexander Brown, John P. Wisniewski, Rachel A. Osten, Eliot H. Vrijmoet, Graeme L. White, Brad D. Carter, Carol A. Grady, Todd J. Henry, Rodrigo H. Hinojosa, Jamie R. Lomax, James E. Neff, Leonardo A. Paredes, Jack Soutter   +15 more
doaj   +1 more source

FLARE: A Framework for Stellar Flare Forecasting Using Stellar Physical Properties and Historical Records

Proceedings of the Thirty-Fourth International Joint Conference on Artificial Intelligence
Stellar flare events are critical observational samples for astronomical research; however, recorded flare events remain limited. Stellar flare forecasting can provide additional flare event samples to support research efforts. Despite this potential, no specialized models for stellar flare forecasting have been proposed to date.
Bingke Zhu, Xiaoxiao Wang, Minghui Jia, Yihan Tao, Xiao Kong, Ali Luo, Yingying Chen 0003, Ming Tang 0001, Jinqiao Wang   +8 more
openaire   +4 more sources

X-Ray Observations of Stellar Flares [PDF]

International Astronomical Union Colloquium, 1983
ABSTRACTThe history of stellar X-ray flare observations prior to EINSTEIN is reviewed. X-ray light curves as measured by the IPC are then presented for all time resolved flare events discovered as of July 1982 in the EINSTEIN data set. These light curves are analyzed in terms of solar-like loop models to derive densities, temperatures, loop lengths ...
openaire   +1 more source

Development of a Disease Activity Index for the Assessment of VEXAS Syndrome (VEXAS‐DAI)

Arthritis Care &Research, EarlyView.
Objective Vacuoles, E1 enzyme, X‐linked, autoinflammatory, somatic syndrome (VEXAS) syndrome is characterized by a complex spectrum of inflammatory and hematologic manifestations. Clinical research to identify effective therapies is urgently needed but is hindered by the lack of validated outcome measures.
Kevin Byram, Heřman Mann, Danielle Hammond, Onima Chowdhury, Sinisa Savic, Yohei Kirino, Carmelo Gurnari, Maël Heiblig, Thibault Comont, Arsène Mekinian, Mrinal M. Patnaik, Lachelle D. Weeks, Gary Ho, Adam Al‐Hakim, Scott Goldberg, Marcela A. Ferrada, Sophie Georgin‐Lavialle, Peter C. Grayson, Emma M. Groarke, Bhavisha Patel, Megan Sullivan, Sarah A. Buckley, Bryan G. Harder, Raman Garcha, David B. Beck, Matthew J. Koster   +25 more
wiley   +1 more source

Nucleosynthesis in stellar flares

, 2008
12 pages, 3 figures, contribution to the Proceedings of the XIXemes Rencontres de Blois, Matter and energy in the Universe, Blois, France, May ...
Tatischeff, V., Thibaud, J. -P., Ribas, I.   +2 more
openaire   +2 more sources

Caregiver Perspectives on the Burden of Disease and Treatment in Uncontrolled Gout

Arthritis Care &Research, EarlyView.
Objective Uncontrolled gout (UG) refers to persistently elevated serum urate (SU) levels >6 mg/dL and ongoing gout symptoms despite use of urate‐lowering therapy (ULT). The objective of this study was to evaluate the burden associated with informal caregiving for individuals with UG.
Angelo Gaffo, Bhavisha Desai, Abiola Oladapo, Nana Kragh, Rebekah Zincavage, Brad Padilla, Naomi Schlesinger   +6 more
wiley   +1 more source

A Machine Learning Approach for Identifying Coronal Mass Ejection–associated Stellar Flares in TESS Observations

The Astrophysical Journal Supplement Series
Coronal mass ejections (CMEs) are major drivers of stellar space weather and can strongly influence the habitability of exoplanets. However, compared to the frequent occurrence of white-light flares, confirmed stellar CMEs remain extremely rare.
Yu Shi, Hong-Peng Lu, Li-Yun Zhang, Tian-Hao Su, Chao Tan   +4 more
doaj   +1 more source

Stellar flares cannot explain the Galactic 511 keV emission

Astronomy & Astrophysics
Context. The origin of the 511 keV line signal in the Milky Way remains unresolved despite decades of observations. The measured flux of ∼3 × 10−3 ph cm−2 s−1 suggests a steady-state positron injection rate of ∼1043-1044 e+ s−1.
Mittal Saurabh, Siegert Thomas, Calore Francesca, Panther Fiona H., Serpico Pasquale D., Yoneda Hiroki, Bauer Niklas C., Bouchet Tristan, Eisenberger Laura, Gelowicz Mika A., Oka Tomohiko, Reinhardt Rudi, Skalka Manuel R. H. W., Tsatsis Dimitris, Zimmerer Manja L.   +14 more
doaj   +1 more source

Stellar Parameters and Spectroscopic Properties of TESS Objects Observed in the LAMOST Low- and Medium-resolution Spectral Survey

The Astrophysical Journal Supplement Series, 2022
Stellar parameters and magnetic activity are important for the understanding of stellar physics and dynamo theory. We have used LAMOST spectroscopic surveys to study stellar parameters and magnetic activity properties of TESS objects.
Li-yun Zhang, Tianhao Su, Prabhakar Misra, Xianming L. Han, Gang Meng, Qingfeng Pi, Jiawei Yang   +6 more
doaj   +1 more source

Li production by stellar flares in young open clusters

, 2008
The correlation observed between the Li abundance and surface activity of young cool stars is not explained by current stellar evolution models. We study the possibility that this correlation arises from significant in situ production of Li by solar-like
Tatischeff, V., Thibaud, J.-P.
core   +1 more source