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},
  pages={1263 - 1272}
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… 

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 continuum

EXO 2030+375 Restarts in Reverse

The Be X-ray binary pulsar EXO 2030+375, first detected in 1985, has shown a significant detected X-ray outburst at nearly every periastron passage of its 46-day orbit for the past ~25 years, with

Studying the accretion geometry of EXO 2030+375 at luminosities close to the propeller regime

The Be X-ray binary EXO 2030+375 was in an extended low luminosity state during most of 2016. We observed this state with NuSTAR and Swift, supported by INTEGRAL observations as well as optical

Accretion regimes in the X-ray pulsar 4U 1901+03

The source 4U 1901+03 is a high-mass X-ray pulsar than went into outburst in 2003. Observation performed with the Rossi X-ray Timing Explorer showed spectral and timing variability, including the

Glancing through the accretion column of EXO 2030+375

We took advantage of the large collecting area and good timing capabilities of the EPIC cameras on-board XMM-Newton to investigate the accretion geometry onto the magnetized neutron star hosted in

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.


We present recent contemporaneous X-ray and optical observations of the Be/X-ray binary system A 0535+26 with the Fermi/Gamma-ray Burst Monitor (GBM) and several ground-based observatories. These new

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 I

Quasi-periodic flares in EXO 2030+375 observed with INTEGRAL

NASA Marshall Space Flight Center, Huntsville, AL 35812, USAReceived ***; accepted ***ABSTRACTContext. Episodic flaring activity is a common feature of X-ray pulsars in HMXBs. In some Be/X-ray


The high-mass X-ray binary 4U 1901+03 is reported to have a pulse profile evolving with the X-ray luminosity and energy during its outburst in 2003 February–July: the pulse peak changed from double



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,

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, the

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–September

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, six

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 concentrates

Observations of Accreting Pulsars

We summarize 5 years of continuous monitoring of accretion-powered pulsars with the Burst and Transient Source Experiment (BATSE) on the Compton Gamma Ray Observatory. Our 20-70 keV observations have

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 profile

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. The

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 a

On the accretion flow geometry in A0535+26

The geometry of accretion flow in the Be/X-ray transient A0535+26 is explored. It is shown that neither moderate nor giant X-ray flaring events observed in the system can be interpreted within the