The first observed stellar X-ray flare oscillation: Constraints on the flare loop length and the magnetic field [PDF]
Astronomy & Astrophysics, 2005 Accepted by A&A (03/12/2005)
Mitra-Kraev, U. +3 more
openaire +2 more sources
Geophysical Monograph Series, Page 169-190., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Nasrrddine Youbi +9 more
wiley +1 more source
An Optical and Infrared Time-Domain Study of the Supergiant Fast X-ray Transient Candidate IC 10 X-2 [PDF]
, 2017 We present an optical and infrared (IR) study of IC 10 X-2, a high-mass X-ray binary in the galaxy IC 10. Previous optical and X-ray studies suggest X-2 is a Supergiant Fast X-ray Transient: a large-amplitude (factor of $\sim$ 100), short-duration (hours
Boyer, Martha L. +7 more
core +2 more sources
Hard X-ray flares in IGR J08408–4503 unveil clumpy stellar winds [PDF]
Astronomy & Astrophysics, 2007 Context : A 1000-s flare from a new hard X-ray transient, IGR J08408-4503, was observed by INTEGRAL on May 15, 2006 during the real-time routine monitoring of IBIS/ISGRI images performed at the INTEGRAL Science Data Centre. The flare, detected during a single one-hour long pointing, peaked at 250 mCrab in the 20-40 keV energy range.
Leyder, Jean-Christophe +4 more
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Balmer and Soft X-ray Emission from Solar and Stellar Flares [PDF]
Symposium - International Astronomical Union, 1990 Integrated soft X-ray (8-12A) fluxes for solar flares have been scaled to the equivalent EXOSAT fluxes using spectra obtained from a variety of rocket-based experiments. The data show good agreement with the soft X-ray - Hγ correlation established by Butler et al. (1988) for stellar flares and confirm the basic similarity, in this respect, of flares on
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X-ray flares from the stellar tidal disruption by a candidate supermassive black hole binary [PDF]
Nature Communications, 2020 AbstractOptical transient surveys have led to the discovery of dozens of stellar tidal disruption events (TDEs) by massive black hole in the centers of galaxies. Despite extensive searches, X-ray follow-up observations have produced no or only weak X-ray detections in most of them.
Xinwen Shu +10 more
openaire +4 more sources
What can be learnt from full disk X-ray observations of stellar flares? [PDF]
Symposium - International Astronomical Union, 1987 The Einstein Observatory demonstrated the existence of hot envelopes, i.e., stellar coronae, around most classes of normal stars (Vaiana et al. 1981). The coronae of late type stars of spectral type F through M are generally thought to be solar-like, i.e., structured and organised by the magnetic field topology and heated by some process(es) involving ...
J. H. M. M. Schmitt +2 more
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Probability Distribution Functions of Solar and Stellar Flares
Physics, 2022 The paper studies the soft X-ray data of solar flares and found that the distribution functions of flare fluence are successfully modeled by tapered power law or gamma function distributions whose power exponent is slightly smaller than 2, indicating ...
Takashi Sakurai
doaj +1 more source
The solar—stellar connection: the relationship between flaring rates, flare power and quiescent X-ray background [PDF]
International Astronomical Union Colloquium, 1989 The nature of flare activity on dMc stars (red dwarfs with strong chromospheric IIα emission lines) has been the subject of many studies. Some years ago Lacy et al. (1976) demonstrated a relationship (see also Doyle et al., 1986) between mean flare power and quiescent luminosity, in the photometric U-band.
Richard A. Harrison +2 more
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The Giant Flares of the Microquasar Cygnus X-3: X-Rays States and Jets
Galaxies, 2017 We report on two giant radio flares of the X-ray binary microquasar Cyg X-3, consisting of a Wolf–Rayet star and probably a black hole. The first flare occurred on 13 September 2016, 2000 days after a previous giant flare in February 2011, as the RATAN ...
Sergei Trushkin +3 more
doaj +1 more source