Results 41 to 50 of about 6,703 (158)

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

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

Probing the Canis Major stellar over-density as due to the Galactic warp

, 2004
Proper-motion, star counts and photometric catalog simulations are used to explain the detected stellar over-density in the region of Canis Major (CMa), claimed to be the core of a disrupted dwarf galaxy (Martin et al. 2004, Bellazzini et al.
Abadi, Bonifacio, Castro-Rodríguez, Crane, Dinescu, Djorgovski, F. De Angeli, Freudenreich, Freudenreich, Frinchaboy, G. Carraro, G. Piotto, Grebel, Helmi, Ibata, Kinman, L. R. Bedin, López-Corredoira, Martin, Momany, Newberg, Oort, P. Bonifacio, Platais, Robin, Rocha-Pinto, S. R. Zaggia, Schlegel, Y. Momany, Zacharias   +29 more
core   +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

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

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

Abstract Supplement

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

A 7 day Multiwavelength Flare Campaign on AU Mic. II. Electron Densities and Kinetic Energies from High-frequency Radio Flares

The Astrophysical Journal
M dwarfs are the most common type of star in the solar neighborhood, and many exhibit frequent and highly energetic flares. To better understand these events across the electromagnetic spectrum, a campaign observed AU Mic (dM1e) over 7 days from the X ...
Isaiah I. Tristan, Rachel A. Osten, Yuta Notsu, Adam F. Kowalski, Alexander Brown, Graeme L. White, Carol A. Grady, Todd J. Henry, Eliot Halley Vrijmoet   +8 more
doaj   +1 more source

New Insights into the Large 1992 July 15–17 Flare on AU Microscopii: The First Detection of Posteruptive Energy Release on a Red Dwarf Star

The Astrophysical Journal, 1999
Extreme Ultraviolet Explorer (EUVE) observations of the long-duration 1992 July 15-17 flaring event on the red dwarf star AU Mic are discussed. The flare was detected in the EUVE Deep Survey (DS) Lexan/B band (65-190 A) and was made up of a large impulsive event corresponding to an increase in the extreme ultraviolet (EUV) emission by a factor of 15 ...
M. M. Katsova, J. J. Drake, M. A. Livshits   +2 more
openaire   +1 more source