Results 71 to 80 of about 2,393 (171)

Classifying Optical (Out)bursts in Cataclysmic Variables: The Distinct Observational Characteristics of Dwarf Novae, Micronovae, Stellar Flares, and Magnetic Gating

The Astrophysical Journal Letters
Cataclysmic variables can experience short optical brightenings, which are commonly attributed to phenomena such as dwarf novae outbursts, micronovae, donor flares, or magnetic gating bursts.
Krystian Iłkiewicz, Simone Scaringi, Martina Veresvarska, Domitilla De Martino, Colin Littlefield, Christian Knigge, John A. Paice, Anwesha Sahu   +7 more
doaj   +1 more source

The Proxima Centauri Campaign—First Constraints on Millimeter Flare Rates from ALMA

The Astrophysical Journal
Proxima Centauri (Cen) has been the subject of many flaring studies due to its proximity and potential to host habitable planets. The discovery of millimeter flares from this M dwarf with Atacama Large Millimeter/submillimeter Array (ALMA) has opened a ...
Kiana Burton, Meredith A. MacGregor, Rachel A. Osten, Ward S. Howard, Alycia J. Weinberger, Evgenya Shkolnik, David J. Wilner, Jan Forbrich, Thomas Barclay   +8 more
doaj   +1 more source

Time-dependent Stellar Flare Models of Deep Atmospheric Heating

The Astrophysical Journal
Optical flares have been observed from magnetically active stars for many decades; unsurprisingly, the spectra and temporal evolution are complicated.
Adam F. Kowalski, Joel C. Allred, Mats Carlsson   +2 more
doaj   +1 more source

Apache Point Observatory (APO)/SMARTS Flare Star Campaign Observations. I. Blue Wing Asymmetries in Chromospheric Lines during Mid-M-Dwarf Flares from Simultaneous Spectroscopic and Photometric Observation Data

The Astrophysical Journal
We conducted the time-resolved simultaneous optical spectroscopic and photometric observations of mid-M-dwarf flare stars YZ CMi, EV Lac, and AD Leo. Spectroscopic observations were obtained using Apache Point Observatory 3.5 m and Small and Moderate ...
Yuta Notsu, Adam F. Kowalski, Hiroyuki Maehara, Kosuke Namekata, Kenji Hamaguchi, Teruaki Enoto, Isaiah I. Tristan, Suzanne L. Hawley, James R. A. Davenport, Satoshi Honda, Kai Ikuta, Shun Inoue, Keiichi Namizaki, Daisaku Nogami, Kazunari Shibata   +14 more
doaj   +1 more source

EFTE-SOAR: Two Giant M Dwarf Flares with Rapid Spectroscopic Follow-up

The Astronomical Journal
We present time-series optical spectroscopy of two stellar flares with complex multi-peaked light curves: a $2.{1}_{-.3}^{+.4}\times 1{0}^{34}$ erg flare from an M8 ultra-cool dwarf, and a $1.{5}_{-.2}^{+.2}\times 1{0}^{35}$ erg superflare from an M4 ...
Hank Corbett, Nathan Galliher, Amy Glazier, Ramses Gonzalez Chavez, Nicholas M. Law, Ward S. Howard, Alan Vasquez Soto, Jeffrey K. Ratzloff, Robert Quimby   +8 more
doaj   +1 more source

Interaction of an Outflow with Surrounding Gaseous Clouds as the Origin of Late-time Radio Flares in Tidal Disruption Events

The Astrophysical Journal
Close encounter between a star and a supermassive black hole (SMBH) results in the tidal disruption of the star, known as a tidal disruption event (TDE).
Jialun Zhuang, Rong-Feng Shen, Guobin Mou, Wenbin Lu   +3 more
doaj   +1 more source

3. Optical Observations of Solar Flares [PDF]

Transactions of the International Astronomical Union, 1957
openaire   +1 more source

Wearable devices detect physiological changes that precede and are associated with symptomatic and inflammatory rheumatoid arthritis flares. [PDF]

Sci Rep
Sharma P, Danieletto M, Whang JK, Landell K, Helmus D, Sands BE, Suarez-Farinas M, Gulko PS, Hirten RP.   +8 more
europepmc   +1 more source

Revisiting pathologic myopia: imaging evidence of an inflammatory component in the pathogenesis of myopic degeneration. [PDF]

Front Med (Lausanne)
Fonollosa A, Artaraz J.
europepmc   +1 more source

Long-term management of recurrent uveitis associated with autoimmune lymphoproliferative syndrome. [PDF]

J Ophthalmic Inflamm Infect
Kaftan T, Nguyen NV, Begley J, Song H, Timperley B, Suhler E, Hejkal T, Sen HN, Snow M, Yeh S.   +9 more
europepmc   +1 more source