Results 61 to 70 of about 403,855 (253)
X‐Ray Spectroscopy of Candidate Ultracompact X‐Ray Binaries [PDF]
The Astrophysical Journal, 2005 8 pages, 3 figures, accepted for publication to the Astrophysical ...
Adrienne M. Juett +2 more
openaire +3 more sources
The Astrophysical JournalWe study 15 thermonuclear X-ray bursts from 4U 1820–30 observed with the Neutron Star Interior Composition Explorer (NICER). We find evidence of a narrow emission line at 1.0 keV and three absorption lines at 1.7, 3.0, and 3.75 keV, primarily around the ...
Gaurava K. Jaisawal +8 more
doaj +1 more source
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
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Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR
The Astrophysical Journal, 2023 The transient black hole X-ray binary MAXI J1803−298 was discovered on 2021 May 1, as it went into outburst from a quiescent state. As the source rose in flux it showed periodic absorption dips and fit the timing and spectral characteristics of a hard ...
Benjamin M. Coughenour +11 more
doaj +1 more source
X-ray Pulsations in the Supersoft X-ray Binary CAL 83
, 2005 X-ray data reveal that the supersoft X-ray binary CAL 83 exhibits 38.4 minute pulsations at some epochs. These X-ray variations are similar to those found in some novae and are likely to be caused by nonradial pulsations the white dwarf.
A. P. Cowley +4 more
core +3 more sources
The Astrophysical JournalWe perform a comprehensive study of thermonuclear bursts from the neutron star low-mass X-ray binary 4U 1702–429 detected with NICER and XMM-Newton. The thermonuclear burst detected with NICER shows clear evidence of a photospheric radius expansion (PRE)
Manoj Mandal +2 more
doaj +1 more source
Low-Mass X-ray Binary Populations
, 2010 Low-mass X-ray binaries (LMXBs) have been studied in the Galaxy since the beginning of X-ray astronomy. A lot has been learned about these bright X-ray sources, but significant questions are still open.
Fabbiano, G.
core +1 more source
X-ray and gamma-ray orbital variability from the gamma-ray binary HESS J1832-093
, 2020 Context. Gamma-ray binaries are systems composed of a massive star and a compact object whose interaction leads to particle acceleration up to relativistic energies. In the last fifteen years, a few binaries have been discovered to emit at high energies,
Martí-Devesa, G., Reimer, O.
core +1 more source
On the binary nature of massive blue hypergiants: high-resolution X-ray spectroscopy suggests that Cyg OB2 12 is a colliding wind binary [PDF]
, 2017 The blue hypergiant Cyg OB2-12 (B3Ia+) is a representative member of the class of very massive stars in a poorly understood evolutionary stage. We obtained its high-resolution X-ray spectrum using Chandra observatory.
Hainich, R. +7 more
core +3 more sources
Millisecond Oscillations in X-Ray Binaries [PDF]
Annual Review of Astronomy and Astrophysics, 2000 ▪ Abstract The first millisecond X-ray variability phenomena from accreting compact objects have recently been discovered with the Rossi X-ray Timing Explorer. Three new phenomena are observed from low-mass X-ray binaries containing low-magnetic-field neutron stars: millisecond pulsations, burst oscillations, and kilohertz quasi-periodic oscillations.
openaire +5 more sources