On the power spectra of the wind-fed X-ray binary pulsar GX 301 - 2

1992 ◽  
Vol 386 ◽  
pp. 703 ◽  
Author(s):  
Mauro Orlandini ◽  
G. E. Morfill
Keyword(s):  
Power Spectra ◽  
X Ray ◽  
Binary Pulsar

scholarly journals Aperiodic Flux Variability in A 0535+262

1996 ◽  
Vol 165 ◽  
pp. 313-319
Author(s):  
Mark H. Finger ◽  
Robert B. Wilson ◽  
B. Alan Harmon ◽  
William S. Paciesas
Keyword(s):  
Neutron Star ◽  
Gamma Ray ◽  
Beat Frequency ◽  
Power Spectra ◽  
Center Frequency ◽  
X Ray ◽  
Binary Pulsar ◽  
Transient Source ◽  
Flux Variability ◽  
Burst And Transient Source

A “giant” outburst of A 0535+262, a transient X-ray binary pulsar, was observed in 1994 February and March with the Burst and Transient Source Experiment (BATSE) onboard the Compton Gamma-Ray Observatory. During the outburst power spectra of the hard X-ray flux contained a QPO-like component with a FWHM of approximately 50% of its center frequency. Over the course of the outburst the center frequency rose smoothly from 35 mHz to 70 mHz and then fell to below 40 mHz. We compare this QPO frequency with the neutron star spin-up rate, and discuss the observed correlation in terms of the beat frequency and Keplerian frequency QPO models in conjunction with the Ghosh-Lamb accretion torque model.

scholarly journals A minimal timescale for the continuum in 4U 1608-52 and Aql X-1

2021 ◽  
Vol 502 (1) ◽  
pp. L72-L78
Author(s):  
K Mohamed ◽  
E Sonbas ◽  
K S Dhuga ◽  
E Göğüş ◽  
A Tuncer ◽  
...  
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Power Spectra ◽  
Light Curves ◽  
State Transitions ◽  
Strong Positive Correlation ◽  
Present Evidence ◽  
X Ray ◽  
X Ray Binaries ◽  
The Continuum

ABSTRACT Similar to black hole X-ray binary transients, hysteresis-like state transitions are also seen in some neutron-star X-ray binaries. Using a method based on wavelets and light curves constructed from archival Rossi X-ray Timing Explorer observations, we extract a minimal timescale over the complete range of transitions for 4U 1608-52 during the 2002 and 2007 outbursts and the 1999 and 2000 outbursts for Aql X-1. We present evidence for a strong positive correlation between this minimal timescale and a similar timescale extracted from the corresponding power spectra of these sources.

scholarly journals AstroSat observation of the Be/X-ray binary Pulsar 3A 0726-260 (4U 0728-25)

2020 ◽  
Vol 20 (9) ◽  
pp. 155
Author(s):  
Jayashree Roy ◽  
Prahlad C. Agrawal ◽  
Baibhav Singari ◽  
Ranjeev Misra
Keyword(s):  
X Ray ◽  
Binary Pulsar

scholarly journals An optical and X-ray study of the counterpart to the Small Magellanic Cloud X-ray binary pulsar system SXP327

2008 ◽  
Vol 387 (2) ◽  
pp. 724-728 ◽  
Author(s):  
M. J. Coe ◽  
M. Schurch ◽  
R. H. D. Corbet ◽  
J. Galache ◽  
V. A. McBride ◽  
...  
Keyword(s):  
Magellanic Cloud ◽  
Small Magellanic Cloud ◽  
X Ray ◽  
Binary Pulsar

EXOSAT observations of the X-ray binary pulsar 4U 1538-52

1992 ◽  
Vol 401 ◽  
pp. 685 ◽  
Author(s):  
N. R. Robba ◽  
G. Cusumano ◽  
M. Orlandini ◽  
D. dal Fiume ◽  
F. Frontera
Keyword(s):  
X Ray ◽  
Binary Pulsar
Sign in / Sign up

Export Citation Format

Share Document