Results 31 to 40 of about 4,446 (153)

The Constraint of Crewed Mars Missions Based on Current Radiation Dose Measurements

Space Weather, Volume 24, Issue 3, March 2026.
Abstract Crewed missions to Mars will be a milestone of future space exploration programs. However, the absence of Earth's magnetic field leaves astronauts directly exposed to unattenuated energetic particles in deep space, primarily galactic cosmic rays (GCRs), resulting in significantly higher radiation levels and enhanced health risks. Understanding
Chao Zhang, Weihao Liu, Jingnan Guo, Mikhail Dobynde, Robert F. Wimmer‐Schweingruber   +4 more
wiley   +1 more source

Rising Near-ultraviolet Spectra in Stellar Megaflares

The Astrophysical Journal
Flares from M dwarf stars can attain energies up to 10 ^4 times larger than solar flares but are generally thought to result from similar processes of magnetic energy release and particle acceleration.
Adam F. Kowalski, Rachel A. Osten, Yuta Notsu, Isaiah I. Tristan, Antigona Segura, Hiroyuki Maehara, Kosuke Namekata, Shun Inoue   +7 more
doaj   +1 more source

The Complement System in ANCA‐Associated Vasculitis: Mechanistic Insights, Therapeutic Horizons, and Unmet Clinical Needs

Immunity, Inflammation and Disease, Volume 14, Issue 2, February 2026.
Complement activation, particularly via the alternative pathway, drives inflammation and organ damage in ANCA‐associated vasculitis. This review highlights mechanistic insights, tissue and biomarker evidence, and clinical implications of targeting the C5a–C5aR1 axis.
Kehinde Sunmboye, Pauline Millan
wiley   +1 more source

A Seven-day Multiwavelength Flare Campaign on AU Mic. III. Quiescent and Flaring Properties of the X-Ray Spectra and Chromospheric Lines

The Astrophysical Journal
We present the X-ray quiescent and flaring properties from a unique, 7 days multiwavelength observing campaign on the M1 flare star AU Mic. Combining the XMM-Newton X-ray spectra with the chromospheric line and broadband near-UV (NUV) and optical ...
Yuta Notsu, Isaiah I. Tristan, Rachel A. Osten, Alexander Brown, Adam F. Kowalski, Carol A. Grady   +5 more
doaj   +1 more source

Flaring Activity for Low-mass Stars in the β Pictoris Moving Group

The Astronomical Journal
Stellar flares from K and M dwarfs release panchromatic radiation characterized by a significantly higher brightness temperature (∼9–20 kK) than the star. The increased frequency of magnetic activity on young low-mass stars results in the energy released
Jordan N. Ealy, Joshua E. Schlieder, Thaddeus D. Komacek, Emily A. Gilbert   +3 more
doaj   +1 more source

Complementary genomic and morphological data elucidate the phylogeny of obscure darkling beetles (Blaptinae: Platynotini: Eurynotina)

Systematic Entomology, Volume 51, Issue 1, January‐March 2026.
First comprehensive phylogenomic study of subtribe Eurynotina using a combined dataset of 499 nuclear loci, 12 mitochondrial loci and 91 morphological characters covering all genera and species groups is presented. Eurynotina is monophyletic and genera within are redefined based on reassessment of old characters, generation of new characters, and ...
Ryan Lumen, Adam M. Rork, Aaron D. Smith, Marcin J. Kamiński   +3 more
wiley   +1 more source

First Temperature Profile of a Stellar Flare Using Differential Chromatic Refraction

The Astrophysical Journal Letters
We present the first derivation of a stellar flare temperature profile from single-band photometry. Stellar flare DWF 030225.574−545707.45129 was detected in 2015 by the Dark Energy Camera as part of the Deeper, Wider, Faster program. The brightness (Δ m
Riley W. Clarke, Federica Bianco, James R. A. Davenport, Jeffery Cooke, Sara Webb, Igor Andreoni, Tyler Pritchard, Aaron Roodman   +7 more
doaj   +1 more source

Abstract Supplement

Pulmonary Medicine, Volume 2026, Issue 1, 2026.
 
Marzia Folegani, Semonti Nandi
wiley   +1 more source

TESS Observations of Outbursts on Polars—Superflares

The Astrophysical Journal
Flare events are magnetic activities on the stellar surface, which can provide us with information about the accretion behavior and evolution of polars. In this paper, we search for flare events on polars from all the available 2 minute cadence TESS data
Qishan Wang, Xiaohui Fang, Shengbang Qian   +2 more
doaj   +1 more source

New flare stars and flares of the known ones in Orion

, 2016
Observations of red dwarf flare stars were initiated in the Abastumani Astrophysical Observatory in 1969 (Kiladze, 1972). Regions rich in red dwarf stars were selected: the area around Orion Trapezium, and the stellar cluster of Pleiades have been chosen ...
Natsvlishvili Rezo, Kochiashvili Ia, Kochiashvili Nino   +2 more
semanticscholar   +1 more source