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The Swift gamma-ray burst mission
- N. Gehrels, N. White, M. Vietri
- Physics
- 20 August 2004
TLDR
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 sont…
An enigmatic long-lasting γ-ray burst not accompanied by a bright supernova
- M. Valle, G. Chincarini, L. Stella
- PhysicsNature
- 15 August 2006
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 of…
GRB 090423 at a redshift of z ≈ 8.1
- R. Salvaterra, M. Valle, V. Testa
- PhysicsNature
- 8 June 2009
TLDR
A Low-Magnetic-Field Soft Gamma Repeater
- N. Rea, P. Esposito, C. Kouveliotou
- PhysicsScience
- 13 October 2010
TLDR
The neutron stars of Soft X–ray Transients
- S. Campana, M. Colpi, S. Mereghetti, L. Stella, M. Tavani
- Physics
- 1 December 1993
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 observational…
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.…
An accreting pulsar with extreme properties drives an ultraluminous x-ray source in NGC 5907
- G. Israel, A. Belfiore, A. Wolter
- PhysicsScience
- 23 September 2016
TLDR
Discovery of a 0.42-s pulsar in the ultraluminous X-ray source NGC 7793 P13
- G. Israel, A. Papitto, G. Lisini
- Physics
- 21 September 2016
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 18-23…
A 685 second orbital period from the X-ray source 4U 1820-30 in the globular cluster NGC 6624.
- L. Stella
- Physics
- 1987
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 3…
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