Results 41 to 50 of about 83,767 (197)

Measuring the masses and radii of neutron stars in low-mass X-ray binaries: Effects of the atmospheric composition and touchdown radius [PDF]

, 2021
Myung-Kuk Kim, Young-Min Kim, Kwang Hyun Sung, Chang Hwan Lee, Kyujin Kwak   +4 more
openalex   +1 more source

Long-term Quasiperiodicity in LMXB 4U 1636–536

The Astrophysical Journal, 2023
We present the results of the low-mass X-ray binary 4U 1636–536 study. We performed a temporal analysis of all available RXTE/All-Sky Monitor, RXTE/Proportional Counter Array, Swift/Burst Alert Telescope, and MAXI data collected until the middle of 2022.
Mateusz Wiśniewicz, Dorota Gondek-Rosińska, Agnieszka Słowikowska, Andrzej Zdziarski, Agnieszka Janiuk   +4 more
doaj   +1 more source

Population of X-Ray Sources in the Intermediate-age Cluster NGC 3532: a Test Bed for Machine-learning Classification

The Astrophysical Journal, 2023
Open clusters are thought to be the birthplace of most stars in the galaxy. Thus, they are excellent laboratories for investigating stellar evolution, and X-ray properties of various types of stars (including binary stars, evolved stars, and compact ...
Steven Chen, Oleg Kargaltsev, Hui Yang, Jeremy Hare, Igor Volkov, Blagoy Rangelov, John Tomsick   +6 more
doaj   +1 more source

A Comprehensive Study of Thermonuclear X-Ray Bursts from 4U 1820–30 with NICER: Accretion Disk Interactions and a Candidate Burst Oscillation

The Astrophysical Journal
We present the results obtained from timing and spectral studies of 15 thermonuclear X-ray bursts from 4U 1820–30 observed with the Neutron Star Interior Composition Explorer (NICER) during its 5 yr of observations between 2017 and 2022.
Gaurava K. Jaisawal, Z. Funda Bostancı, Tuğba Boztepe, Tolga Güver, Tod E. Strohmayer, David R. Ballantyne, Jens H. Beck, Ersin Göğüş, Diego Altamirano, Zaven Arzoumanian, Deepto Chakrabarty, Keith C. Gendreau, Sebastien Guillot, Renee M. Ludlam, Mason Ng, Andrea Sanna, Jérôme Chenevez   +16 more
doaj   +1 more source

Drop in the Hard Pulsed Fraction and a Candidate Cyclotron Line in IGR J16320–4751 Seen by NuSTAR

The Astrophysical Journal, 2023
We report on a timing and spectral analysis of a 50 ks NuSTAR observation of IGR J16320−4751 (= AX J1631.9−4752), a high-mass X-ray binary hosting a slowly rotating neutron star.
A. Bodaghee, J.-L. Chiu, J. A. Tomsick, V. Bhalerao, E. Bottacini, M. Clavel, C. Cox, F. Fürst, M. J. Middleton, F. Rahoui, J. Rodriguez, P. Romano, J. Wilms   +12 more
doaj   +1 more source

Galactic X-ray binary jets

, 2007
With their relatively fast variability time-scales, Galactic X-ray binaries provide an excellent laboratory to explore the physics of accretion and related phenomena, most notably outflows, over different regimes.
A.M. Stirling, D. Russell, E. Gallo, E. Gallo, E. Körding, E. Körding, Elena Gallo, H. Falcke, H. Falcke, I.F. Mirabel, J. Homan, J. Homan, J. Homan, J. Miller, J. Miller-Jones, J.E. McClintock, J.E. McClintock, M. der Klis van, R. Fender, R. Fender, R. Narayan, R.D. Blandford, R.P. Fender, R.P. Fender, R.P. Fender, R.P. Fender, S. Corbel, S. Corbel, S. Corbel, S. Heinz, S. Markoff, S. Markoff, S. Markoff, S. Migliari, S. Migliari, V. Dhawan   +35 more
core   +1 more source

Photospheric Radius Expansion Thermonuclear Burst and X-Ray Reflection from the Neutron Star X-Ray Binary 4U 1702-429

The Astrophysical Journal
We 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, Sachindra Naik, Gaurava Kumar Jaisawal   +2 more
doaj   +1 more source

Pulsed Iron Line Emission from the First Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124

The Astrophysical Journal
We report the phase-resolved spectral results of the first Galactic pulsating ultraluminous X-ray source (PULX) Swift J0243.6+6124, modeling its 2017–2018 outburst peak using data collected by the Hard X-ray Modulation Telescope (Insight-HXMT). The broad
Y. X. Xiao, Y. J. Xu, M. Y. Ge, F. J. Lu, S. N. Zhang, S. Zhang, L. Tao, J. L. Qu, P. J. Wang, L. D. Kong, Y. L. Tuo, Y. You, S. J. Zhao, J. Q. Peng, Y. F. Du, Y. H. Zhang, W. T. Ye   +16 more
doaj   +1 more source

Observation of soft X-rays from cosmic sources [PDF]

A binary X-ray source, an extended extragalactic X-ray source and several nearby stars were surveyed for X-ray emission. The energy spectrum and time structure of X-ray flux from the binary source, Her X-l, was investigated in the range from 0.15 to 6 ...
Acton, L. W., Catura, R. C.
core   +1 more source

X-ray Emission from the Binary Central Stars of the Planetary Nebulae HFG 1, DS 1, and LoTr 5

, 2010
Close binary systems undergoing mass transfer or common envelope interactions can account for the morphological properties of some planetary nebulae. The search for close binary companions in planetary nebulae is hindered by the difficulty of detecting ...
Arnaud, Bohm, Bruch, Cargill, Chu, Churazov, De Marco, Drake, Frank, Frew, Grauer, Groth, Guerrero, Heckathorn, Heckathorn, Hilditch, Jasniewicz, Jeffries, Joel H. Kastner, Jordan, Kastner, Kastner, Kuczawska, Marsh, Mathioudakis, Montez, Motch, Muerset, Muerset, O'Dwyer, Orsola De Marco, Paczynski, Press, Ricker, Rodolfo Montez, Sanz-Forcada, Serber, Snowden, Soker, Stassun, Strassmeier, Thevenin, Weisskopf, You-Hua Chu   +43 more
core   +1 more source