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The Swift gamma-ray burst mission
TLDR
The Swift mission, scheduled for launch in 2004, is a multiwavelength observatory for gamma-ray burst astronomy. Expand
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X-ray fluorescence from the inner disc in Cygnus X-1
Les spectres RX de nombreuses sources de trous noirs en accretion suggerent la presence de matiere relativement froide entouree d'un plasma emetteur de RX dur. Les raies fluorescentes du fer sontExpand
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An enigmatic long-lasting γ-ray burst not accompanied by a bright supernova
Gamma-ray bursts (GRBs) are short, intense flashes of soft γ-rays coming from the distant Universe. Long-duration GRBs (those lasting more than ∼2 s) are believed to originate from the deaths ofExpand
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GRB 090423 at a redshift of z ≈ 8.1
Gamma-ray bursts (GRBs) are produced by rare types of massive stellar explosion. Their rapidly fading afterglows are often bright enough at optical wavelengths that they are detectable atExpand
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A Low-Magnetic-Field Soft Gamma Repeater
Odd Magnetar Magnetars are neutron stars that are widely thought to be powered by extremely high magnetic fields. Using data from three different x-ray observatories, Rea et al. (p. 944, publishedExpand
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The neutron stars of Soft X–ray Transients
Summary. Soft X–ray Transients (SXRTs) have long been suspected to contain old, weakly magnetic neutron stars that have been spun up by accretion torques. After reviewing their observationalExpand
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Discovery of a 0.42-s pulsar in the ultraluminous X-ray source NGC 7793 P13
NGC 7793 P13 is a variable (luminosity range ∼100) ultraluminous X-ray source proposed to host a stellar-mass black hole of less than 15 M⊙ in a binary system with orbital period of 64 d and a 18-23Expand
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KHZ QUASIPERIODIC OSCILLATIONS IN LOW-MASS X-RAY BINARIES AS PROBES OF GENERAL RELATIVITY IN THE STRONG-FIELD REGIME
We consider the interpretation of a pair of kHz quasiperiodic oscillations (QPOs) in the Fourier spectra of two low-mass x-ray binaries, Sco X-1 and 4U1608-52, hosting an old accreting neutron star.Expand
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Swings between rotation and accretion power in a binary millisecond pulsar
It is thought that neutron stars in low-mass binary systems can accrete matter and angular momentum from the companion star and be spun-up to millisecond rotational periods. During the accretionExpand
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A 685 second orbital period from the X-ray source 4U 1820-30 in the globular cluster NGC 6624.
The discovery of a coherent 685 s periodicity in the X-ray source 4U 1820 -30, which is located in the globular cluster NGC 6624, is reported. The modulation has a peak-to-peak amplitude of up to 3Expand
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