Outbursts Large and Small from EXO 2030+375

  title={Outbursts Large and Small from EXO 2030+375},
  author={Colleen. A. Wilson and Mark H. Finger and Ascension Camero-Arranz},
  journal={The Astrophysical Journal},
During the summer of 2006, the accreting X-ray pulsar EXO 2030+375 underwent its first giant outburst since its discovery in 1985. Our observations include the first ever of the rise of a giant outburst of EXO 2030+375. EXO 2030+375 was monitored daily with the Rossi X-Ray Timing Explorer (RXTE) from 2006 June to 2007 May. During the giant outburst we discovered evidence for a cyclotron feature at ~11 keV. This feature was confidently detected for about 90 days, during the brighter portion of… Expand
Possible regular phenomena in EXO 2030+375
In the last 10 years, since its last giant outburst in 2006, regular X-ray outbursts (type I) were detected every periastron passage in the Be X-ray binary EXO 2030+375. Recently, however, it wasExpand
Giant outburst of EXO 2030+375: pulse-phase resolved analysis of INTEGRAL data
In June–September 2006 the Be/X-ray binary EXO 2030+375 experienced the second giant outburst since its discovery. The source was shown to have a complicated pulse-averaged X-ray spectral continuumExpand
EXO 2030+375 Restarts in Reverse
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Studying the accretion geometry of EXO 2030+375 at luminosities close to the propeller regime
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Glancing through the accretion column of EXO 2030+375
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Two giant outbursts of V0332+53 observed with INTEGRAL.
A highly significant anti-correlation of the centroid energy of the fundamental CRSF and the 3 -100 keV luminosity of E 1 ∝ -0.095(8)L 37 keV is observed for both outbursts of V0332+53. Expand
Decade long RXTE monitoring observations of Be/X-ray binary pulsar EXO 2030+375
We present a comprehensive timing and spectral studies of Be/X-ray binary pulsar EXO 2030+375 using extensive Rossi X-ray Timing Explorer observations from 1995 till 2011, covering numerous Type IExpand
X-Ray and Optical Observations of A 0535+26
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Quasi-periodic flares in EXO 2030+375 observed with INTEGRAL
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A Decade in the Life of EXO 2030+375: A Multiwavelength Study of an Accreting X-Ray Pulsar
Using BATSE and RXTE observations from 1991 April to 2001 August, we have detected 71 outbursts from 82 periastron passages of EXO 2030+375, a 42 s transient X-ray pulsar with a Be star companion,Expand
Discovery of a Transition to Global Spin-up in EXO 2030+375
EXO 2030+375, a 42 s transient X-ray pulsar with a Be star companion, has been observed to undergo an outburst at nearly every periastron passage for the last 13.5 years. From 1994 through 2002, theExpand
INTEGRAL and Swift observations of EXO 2030+375 during a giant outburst
INAF IASF-Bo, via Gobetti 101, 40129 Bologna, ItalyABSTRACTAims.We investigate the X-ray spectral and timing properties of the high mass X-ray binary EXO 2030+375 observed during itsJune–SeptemberExpand
INTEGRAL observations of the Be/X-ray binary EXO 2030+375 during outburst
We present a type-I outburst of the high-mass X-ray binary EXO 2030+375, detected during INTEGRAL's Performance and Verification phase in December 2002 (on-source time about 10 6 s). In addition, sixExpand
X-ray spectral properties of the pulsar EXO 2030+375 during an outburst
We present the results of the spectral analysis carried out of the X-ray pulsar EXO 2030+375. The observations were made using the Rossi X-ray Timing Explorer (RXTE) satellite. Our study concentratesExpand
Spectroscopic observations of the δ Scorpii binary during its recent periastron passage
The bright star Delta Sco has been considered a typical B0-type object for many years. Spectra of the star published prior to 1990 showed no evidence of emission, but only of short-term line profileExpand
A natural explanation for periodic X-ray outbursts in Be/X-ray binaries
When applied to Be/X-ray binaries, the viscous decretion disc model, which can successfully account for most properties of Be stars, naturally predicts the truncation of the circumstellar disc. TheExpand
The transient 42 second X-ray pulsar EXO 2030+375. II: The luminosity dependence of the pulse profile
During an outburst from the transient, 42 s, X-ray pulsar EXO 2030+375, marked luminosity-dependent changes in pulsar profile were observed. At high luminosities the pulse profile consisted of aExpand
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The transient 42 second X-ray pulsar EXO 2030+375. I: The discovery and the luminosity dependence of the pulse period variations
The discovery of a new transient X-ray pulsar, EXO 2030+375, that is associated with a Be star companion, is reported. The results of a series of EXOSAT observations, where the evolution of theExpand