Results 1 to 10 of about 71,430 (133)

Six new candidate ultracompact X-ray binaries [PDF]

open access: yes, 2007
Ultracompact X-ray binaries (UCXBs) appear able to sustain accretion onto the compact accretor at rates lower than in wider X-ray binaries. This may be understood by the smaller accretion disks in UCXBs: a lower X-ray luminosity suffices to keep a disk ...
Barret   +93 more
core   +2 more sources

Relativistic outflow from two thermonuclear shell flashes on neutron stars [PDF]

open access: yes, 2014
We study the exceptionally short (32-41 ms) precursors of two intermediate-duration thermonuclear X-ray bursts observed with RXTE from the neutron stars in 4U 0614+09 and 2S 0918-549.
Agrawal   +85 more
core   +2 more sources

Identification of the optical and quiescent counterparts to the bright X-ray transient in NGC 6440 [PDF]

open access: yes, 2001
After 3 years of quiescence, the globular cluster NGC 6440 exhibited a bright transient X-ray source turning on in August 2001, as noted with the RXTE All-Sky Monitor.
Asai K.   +12 more
core   +3 more sources

On the nature of two low M-dot X-ray bursters: 1RXS J170854.4-321857 and 1RXS J171824.2-402934 [PDF]

open access: yes, 2005
We carried out Chandra observations of two low-luminosity low-mass X-ray binaries, 1RXS J170854.4-321857 and 1RXS J171824.2-402934, for which previously single X-ray bursts had been detected with the Wide Field Cameras (WFCs) on board BeppoSAX. Both were
Asai   +40 more
core   +1 more source

Astrophysical parameters and orbital solution of the peculiar X-ray transient IGR J00370+6122 [PDF]

open access: yes, 2014
BD+6073 is the optical counterpart of the X-ray source IGR J00370+6122, a probable accretion-powered X-ray pulsar. The X-ray light curve of this binary system shows clear periodicity at 15.7 d, which has been interpreted as repeated outbursts around the ...
Castro, N.   +5 more
core   +3 more sources

The very faint hard state of the persistent neutron star X-ray binary SLX 1737-282 near the Galactic centre [PDF]

open access: yes, 2017
We report on a detailed study of the spectral and temporal properties of the neutron star low mass X-ray binary SLX 1737-282, which is located only ~1degr away from Sgr A.
De Marco, B.   +4 more
core   +2 more sources

The cooling rate of neutron stars after thermonuclear shell flashes [PDF]

open access: yes, 2013
Thermonuclear shell flashes on neutron stars are detected as bright X-ray bursts. Traditionally, their decay is modeled with an exponential function. However, this is not what theory predicts.
A. Cumming   +31 more
core   +1 more source

X-ray variability during the quiescent state of the neutron-star X-ray transient in the globular cluster NGC 6440 [PDF]

open access: yes, 2004
The globular cluster NGC 6440 is known to harbor a bright neutron-star X-ray transient. We observed the globular cluster with Chandra on two occasions when the bright transient was in its quiescent state in July 2000 and June 2003 (both observations were
Craig O. Heinke   +13 more
core   +3 more sources

Discovery of a large and bright bow shock nebula associated with low mass X-ray binary SAX J1712.6-3739

open access: yes, 2009
In a multiwavelength program dedicated to identifying optical counterparts of faint persistent X-ray sources in the Galactic Bulge, we find an accurate X-ray position of SAX J1712.6-3739 through Chandra observations, and discover its faint optical ...
A. M. Read   +40 more
core   +4 more sources

Discovery of the neutron star nature of SLX 1737-282

open access: yes, 2002
SLX 1737-282 is a persistent moderately bright X-ray source 1.2 deg from the Galactic center. X-ray observations with the Wide Field Cameras on BeppoSAX have for the first time revealed the true nature of SLX 1737-282: a 15-min long thermonuclear flash ...
A. Bazzano   +32 more
core   +2 more sources

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