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A catalogue of unusually long thermonuclear bursts on neutron stars
Khaled Alizai, Jérôme Chenevez, Andrew Cumming +10
Rare, energetic (long) thermonuclear (Type I) X-ray bursts are classified either as intermediate-duration or superbursts, based on their duration. Intermediate-duration bursts last…
Enhanced optical activity 12 days before X-ray activity, and a 4 day X-ray delay during outburst rise, in a low-mass X-ray binary
A. J. Goodwin, D. M. Russell, D. K. Galloway +12
X-ray transients, such as accreting neutron stars, periodically undergo outbursts, thought to be caused by a thermal-viscous instability in the accretion disk. Usually outbursts of…
The Swift Bulge Survey: optical and near-IR follow-up featuring a likely symbiotic X-ray binary & a focused wind CV
A. W. Shaw, C. O. Heinke, T. J. Maccarone +13
The nature of very faint X-ray transients (VFXTs) - transient X-ray sources that peak at luminosities - is poorly understood. The faint and of…
NICER Discovers Spectral Lines During Photospheric Radius Expansion Bursts from 4U 1820-30: Evidence for Burst-driven Winds
T. E. Strohmayer, D. Altamirano, Z. Arzoumanian +14
We report the discovery with the Neutron Star Interior Composition Explorer (NICER) of narrow emission and absorption lines during photospheric radius expansion (PRE) X-ray bursts…
Discovery of millihertz quasi-periodic oscillations in the X-ray binary EXO 0748--676
G. C. Mancuso, D. Altamirano, F. García +5
We report the discovery of millihertz quasi-periodic oscillations (mHz QPOs) from the bursting, high-inclination atoll neutron-star low-mass X-ray binary (NS LMXB) EXO 0748--676 wi…
XMMU J181227.8-181234: a new ultracompact X-ray binary candidate
A. J. Goodwin, D. K. Galloway, J. J. M. in 't Zand +3
We report the discovery of Type I (thermonuclear) X-ray bursts from the transient source XMMU J181227.8-181234 = XTE J1812-182. We found 7 X-ray bursts in Rossi X-ray Timing Explor…
The Influence of Stellar Spin on Ignition of Thermonuclear Runaways
Duncan K. Galloway, Jean J. M. in 't Zand, Jérôme Chenevez +7
Runaway thermonuclear burning of a layer of accumulated fuel on the surface of a compact star provides a brief but intense display of stellar nuclear processes. For neutron stars a…
Neutron star cooling and the rp process in thermonuclear X-ray bursts
J. J. M. in 't Zand, M. E. B. Visser, D. K. Galloway +5
When the upper layer of an accreting neutron star experiences a thermonuclear runaway of helium and hydrogen, it exhibits an X-ray burst of a few keV with a cool-down phase of typi…
Chandra spectroscopy of Rapid Burster type-I X-ray bursts
J. J. M. in 't Zand, T. Bagnoli, C. D'Angelo +5
We observed the Rapid Burster with Chandra when it was in the 'banana' state that usually precedes the type-II X-ray bursting 'island' state for which the source is particularly kn…
Understanding superbursts
Jean in 't Zand
Superbursts were discovered at the beginning of this millennium. Just like type-I X-ray bursts, they are thought to be due to thermonuclear shell flashes on neutron stars, only ign…
Discovery of GRS 1915+105 variability patterns in the Rapid Burster
T. Bagnoli, J. J. M. in 't Zand
We report the discovery of two new types of variability in the neutron star low-mass X-ray binary MXB 1730-335 (the 'Rapid Burster'). In one observation in 1999, it exhibits a larg…
A population study of type II bursts in the Rapid Burster
T. Bagnoli, J. J. M. in 't Zand, C. R. D'Angelo +1
Type II bursts are thought to arise from instabilities in the accretion flow onto a neutron star in an X-ray binary. Despite having been known for almost 40 years, no model can yet…
The Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission
Kirpal Nandra, Didier Barret, Xavier Barcons +237
This White Paper, submitted to the recent ESA call for science themes to define its future large missions, advocates the need for a transformational leap in our understanding of tw…
A bright thermonuclear X-ray burst simultaneously observed with Chandra and RXTE
J. J. M. in t Zand, D. K. Galloway, H. L. Marshall +6
The prototypical accretion-powered millisecond pulsar SAX J1808.4-3658 was observed simultaneously with Chandra-LETGS and RXTE-PCA near the peak of a transient outburst in November…
Broad band time-resolved E_{p,i}--L_{iso} correlation in GRBs
Filippo Frontera, Lorenzo Amati, Cristiano Guidorzi +2
We report results of a systematic study of the broad band (2--2000 keV) time resolved prompt emission spectra of a sample of gamma-ray bursts (GRBs) detected with both Wide Field C…
X-ray bursts and superbursts - recent developments
Jean in 't Zand
The past decade and a half has seen many interesting new developments in X-ray burst research, both observationally and theoretically. New phenomena were discovered, such as burst…
Long tails on thermonuclear X-ray bursts from neutron stars: a signature of inward heating?
J. J. M. in 't Zand, L. Keek, A. Cumming +3
We report the discovery of one-hour long tails on the few-minutes long X-ray bursts from the `clocked burster' GS 1826-24. We propose that the tails are due to enduring thermal rad…
RXTE and BeppoSAX Observations of the Transient X-ray Pulsar XTE J1859+083
R. H. D. Corbet, J. J. M. in 't Zand, A. M. Levine +1
We present observations of the 9.8 s X-ray pulsar XTE J1859+083 made with the ASM and PCA on board RXTE, and the WFC on board BeppoSAX. The ASM data cover a 12 year time interval a…