Results 21 to 30 of about 6,416,221 (303)

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

Scale invariance in x-ray flares of gamma-ray bursts

open access: yesPhysical Review Research, 2023
X-ray flares are generally believed to be produced by the reactivation of the central engine, and may have the same energy dissipation mechanism as the prompt emission of gamma-ray bursts (GRBs).
Jun-Jie Wei
doaj   +1 more source

Simulations of X-ray bursts and superbursts [PDF]

open access: yes, 2015
Observations of neutron star in binary systems provide powerful constrains on the physics at the surface of neutron stars. During the accretion of matter from the companion star, periodic nuclear explosion are triggered in the outer layers of the neutron
Fehlmann, Sofie
core   +1 more source

The Swift satellite and redshifts of long gamma-ray bursts [PDF]

open access: yes, 2006
Until 6 October 2005 sixteen redshifts had been measured of long gamma-ray bursts discovered by the Swift satellite. Further 45 redshifts have been measured of the long gamma- ray bursts discovered by other satellites.
Larsson S   +44 more
core   +1 more source

Investigating Time Variability of X-Ray Absorption in Swift GRBs

open access: yesThe Astrophysical Journal, 2023
The existence of excess absorption in the X-ray spectra of GRBs is well known, but the primary location of the absorbing material is still uncertain. To gain more knowledge about this, we have performed a time-resolved analysis of the X-ray spectra of ...
Vlasta Valan   +2 more
doaj   +1 more source

Redshift distribution of gamma-ray bursts and star formation rate [PDF]

open access: yes, 2006
Aims. The redshift distribution of gamma-ray bursts collected in the BATSE Catalog is compared with the star formation rate.We aim to clarify the accordance between them. We also study the case of comoving number density of bursts monotonously increasing
Bagoly, Zsolt   +18 more
core   +1 more source

The effect of proton damage on the X-ray spectral response of MOS CCDs for the swift X-ray telescope [PDF]

open access: yes, 2002
The effect of non-ionising energy loss(NIEL) of protons in charge-coupled devices is to displace silicon atoms and any dopant materials present from their lattice positions to form lattice defects which in turn can trap electrons [1].
Abbey, AF   +9 more
core   +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

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

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

Home - About - Disclaimer - Privacy