Results 71 to 80 of about 5,289 (173)
Preheating of the early Universe by radiation from high-mass X-ray binaries
, 2016 Using a reliably measured intrinsic (i.e. corrected for absorption effects) present-day luminosity function of high-mass X-ray binaries (HMXBs) in the 0.25-2 keV energy band per unit star-formation rate, we estimate the preheating of the early Universe ...
Khabibullin, Ildar, Sazonov, Sergey
core +1 more source
A Comparison of Ultraluminous X-ray Sources in NGC 1399 and the Antennae Galaxies (NGC 4038/4039) [PDF]
, 2006 The temporal and spectral properties of ultraluminous X-ray sources (ULXs, L>2x10^39 ergs/s) and bright X-ray sources (L>3x10^38 ergs/s) are examined and compared in two extremely different host environments: the old elliptical galaxy NGC 1399 and the ...
Feng, Hua, Kaaret, Philip
core +2 more sources
Flux Variations and Torque Reversals of Cen X-3
The Astrophysical JournalCen X-3 is an archetypical X-ray pulsar with strong flux variations and alternating torque reversals, both of which are similar to those of recently discovered pulsating ultraluminous X-ray sources.
Jiren Liu
doaj +1 more source
X-Ray Views of Galactic Accreting Pulsars in High-Mass X-Ray Binaries
UniverseAccreting X-ray pulsars, located in X-ray binaries, are neutron stars with magnetic fields as strong as B∼1012–13 G. This review offers a concise overview of the accretion and radiation processes of X-ray pulsars and summarizes their rich observational ...
Shan-Shan Weng, Long Ji
doaj +1 more source
The Long-term Spin-down Trend of Ultraluminous X-Ray Pulsar M82 X-2
The Astrophysical JournalThe discovery in 2014 of the pulsation from the ultraluminous X-ray source (ULX) M82 X-2 has changed our view of ULXs. Because of the relatively short baseline over which pulsations have been detected so far, M82 X-2's spin state had been assumed to be ...
Jiren Liu
doaj +1 more source
Time-Dependent Synchrotron and Compton Spectra from Jets of Microquasars
, 2006 Jet models for the high-energy emission of Galactic X-ray binary sources have regained significant interest with detailed spectral and timing studies of the X-ray emission from microquasars, the recent detection by the HESS collaboration of very-high ...
Bednarek W. +10 more
core +1 more source
Ultraluminous X-ray Sources in M51
, 2002 4 pages, to appear in the Proceedings of the Symposium on ``New Visions of the Universe in the XMM-Newton and Chandra Era'', 26-30 November 2001, ESTEC, The ...
Terashima, Yuichi, Wilson, Andrew S.
openaire +2 more sources
Phase-dependent Spectral Shape Changes in the Ultraluminous X-Ray Pulsar NGC 5907 ULX1
The Astrophysical JournalThe discovery of coherent pulsations from several ultraluminous X-ray pulsars (ULXPs) has provided direct evidence of a supercritical accretion flow.
Daiki Miura +2 more
doaj +1 more source
The Astrophysical Journal, 2023 We present the first X-ray census of fast radio burst (FRB) host galaxies to conduct the deepest search for active galactic nuclei (AGN) and X-ray counterparts to date.
T. Eftekhari +18 more
doaj +1 more source
Return to the Forgotten Ultraluminous X-Ray Source: A Broadband NICER+NuSTAR Study of NGC 4190 ULX-1
The Astrophysical JournalWe observed the nearby and relatively understudied ultraluminous X-ray source (ULX) NGC 4190 ULX-1 jointly with Neutron Star Interior Composition Explorer (NICER) and NuSTAR to investigate its broadband spectrum, timing properties, and spectral variation
Hannah P. Earnshaw +9 more
doaj +1 more source