Results 11 to 20 of about 8,164 (262)

Supercollapsars and their X-ray bursts [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2010
Abstract The very first stars in the Universe can be very massive, up to 103 M⊙. If born in large numbers, such massive stars can have a strong impact on the subsequent star formation, producing strong ionizing radiation and contaminating the primordial gas with heavy elements.
Komissarov, S. S., Barkov, M. V.
openaire   +2 more sources

X-Ray Bursts of Nuclear Origin [PDF]

open access: yesHighlights of Astronomy, 1977
The fate of nuclear energy carried by matter accreted onto a neutron star was considered e.g. by Rosenbluth et al. (1973). They examined pycnonuclear reactions on an originally cold star, and found that the whole star is thereby heated up to 106−107 °K. The thermonuclear reactions that can be ignited then, have been studied by Hansen and Van Horn (1975)
L. Maraschi, A. Cavaliere
openaire   +1 more source

Detection of X-Ray Bursts in Astronomical Time Series: The Burst of GRO J1744-28 as an Example

open access: yesThe Astrophysical Journal, 2023
To automatically, accurately, and quickly detect local changes in time-series data continuously emitted by X-ray sources, an autoencoder-based unsupervised learning anomaly detection method is proposed.
Hongyang Zhao   +4 more
doaj   +1 more source

Analysis Methods to Localize and Characterize X-Ray Sources with the Microchannel X-Ray Telescope on Board the SVOM Satellite

open access: yesThe Astrophysical Journal, 2023
The Space-based multiband astronomical Variableonboard computing resources. This Object Monitor (SVOM) is a Sino–French space mission targeting high-energy transient astrophysical objects such as gamma-ray bursts.
Shaymaa Hussein   +5 more
doaj   +1 more source

Accretion rates in X-ray bursting sources [PDF]

open access: yesThe Astrophysical Journal, 1994
21 pages ...
LAPIDUS I.   +2 more
openaire   +3 more sources

Solar hard X-ray bursts [PDF]

open access: yesSolar Physics, 1985
The major results from SMM are presented as they relate to our understanding of the energy release and particle transportation processes that lead to the high-energy X-ray aspects of solar flares. Evidence is reviewed for a 152–158 day periodicity in various aspects of solar activity including the rate of occurrence of hard X-ray and gamma-ray flares ...
openaire   +1 more source

Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations

open access: yesThe Astrophysical Journal, 2023
A double-peak X-ray burst from the Galactic magnetar SGR J1935+2154 was discovered to be associated with the two radio pulses of FRB 200428 separated by 28.97 ± 0.02 ms.
M. Y. Ge   +17 more
doaj   +1 more source

X-Ray Bursting Neutron Stars [PDF]

open access: yesSymposium - International Astronomical Union, 1987
The maximum peak luminosity of the X-ray bursts from a burster is most likely interpreted as the Eddington luminosity of a helium-rich envelope surrounding a neutron star. If this interpretation is true, we can obtain a relation between the mass and the radius of the neutron star in terms of the maximum effective temperature of bursts.
openaire   +1 more source

Early optical observations of seven gamma-ray bursts in comparison to their gamma X-ray characteristics in the MSU MASTER Global Robotic Telescopes Net

open access: yesГеодинамика и тектонофизика, 2019
Seven gamma-ray bursts – GRB 130907A, GRB 140311B, GRB 140129B, GRB 160227A, GRB 120404A, GRB 110801A, and GRB 120811C were observed by the MSU MASTER (Mobile Astronomical System of TElescope Robots) Global Network.
V. M. Lipunov   +31 more
doaj   +1 more source

The Game of Life on a Magnetar Crust: From Gamma-Ray Flares to FRBs

open access: yesThe Astrophysical Journal Letters, 2023
This Letter presents a model to unify the diverse range of magnetar activity, through the building and release of elastic stress from the crust. A cellular automaton drives both local and global yielding of the crust, leading to braiding of coronal loops
S. K. Lander
doaj   +1 more source

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