Results 1 to 10 of about 378,234 (335)
A New Sample of Transient Ultraluminous X-Ray Sources Serendipitously Discovered by Swift/XRT [PDF]
The Astrophysical Journal, 2023 Ultraluminous X-ray sources (ULXs) are our best laboratories for studying extreme super-Eddington accretion. Most studies of these objects are of relatively persistent sources; however, there is growing evidence to suggest a large fraction of these ...
Murray Brightman +13 more
doaj +4 more sources
V751 Cyg and V Sge as transient supersoft X-ray sources [PDF]
, 2000 I review the observational evidence for luminous, soft X-ray emission during optical low-states in the two cataclysmic variables V751 Cyg and V Sge, and discuss the possible link to the canonical supersoft X-ray sources.Comment: 6 pages with newarcrc.sty;
J. Greiner
openalex +4 more sources
Transient X-Ray Sources in the Magellanic-type Galaxy NGC 4449 [PDF]
, 2017 We report the identification of seven transient X-ray sources in the nearby Magellanic-type galaxy NGC 4449 using the archival multi-epoch X-ray observations conducted with {\it Chandra}, {\it XMM-Newton} and {\it Swift} telescopes over year 2001--2013 ...
V. Jithesh, Zhong-Xiang Wang
openalex +3 more sources
Rossi X‐Ray Timing ExplorerObservations of the First Transient Z Source XTE J1701−462: Shedding New Light on Mass Accretion in Luminous Neutron Star X‐Ray Binaries [PDF]
, 2007 (Abridged) We report on ten weeks of RXTE observations of the X-ray transient XTE J1701-462. Comparisons with other sources suggest it had all the characteristics of the neutron star Z sources (the brightest persistent neutron star LMXBs).
J. Homan +10 more
openalex +5 more sources
Power-Colours: Simple X-ray Binary Variability Comparison [PDF]
, 2015 We demonstrate a new method of variability classification using observations of black hole X-ray binaries. Using `power colours' -- ratios of integrated power in different Fourier frequency bands -- we can clearly differentiate different canonical black ...
Heil, L. M., Klein-Wolt, M., Uttley, P.
core +10 more sources
The Astrophysical Journal, 2023 We present a detailed compilation and analysis of the X-ray phase space of low- to intermediate-redshift (0 ≤ z ≤ 1) transients that consolidates observed light curves (and theory where necessary) for a large variety of classes of transient/variable ...
Ava Polzin +10 more
doaj +1 more source
On the X-ray Outbursts of Transient Anomalous X-ray Pulsars and Soft Gamma-ray Repeaters [PDF]
, 2012 We show that the X-ray outburst light curves of four transient anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), namely XTE J1810-197, SGR 0501+4516, SGR 1627-41 and CXOU J164710.2-455216, can be produced by the fallback disk model that
Alpar +30 more
core +2 more sources
X-Ray-luminous Supernovae: Threats to Terrestrial Biospheres
The Astrophysical Journal, 2023 The spectacular outbursts of energy associated with supernovae (SNe) have long motivated research into their potentially hazardous effects on Earth and analogous environments.
Ian R. Brunton +4 more
doaj +1 more source
Millenium Year X-ray Transients in Andromeda Galaxy [PDF]
, 2001 We study three transient X-ray sources, that were bright in the central region of M31 galaxy in the year 2000. Observations with Chandra and XMM-Newton allowed us for the first time in the history of X-ray astronomy, to build light curves of transient ...
Konstantin N. Borozdin +5 more
core +2 more sources
First XMM-Newton Observations of the Globular Cluster M22 [PDF]
, 2001 We have examined preliminary data of the globular cluster, M22, from the EPIC MOS detectors on board XMM-Newton. We have detected 27 X-ray sources within the centre of the field of view, 24 of which are new detections. Three sources were found within the
Asai +37 more
core +2 more sources