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Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was observed independently by the Fermi
The INTEGRAL Science Data Centre (ISDC)
The INTEGRAL Science Data Centre (ISDC) provides the INTEGRAL data and means to analyse them to the scientific community. The ISDC runs a gamma ray burst alert system that provides the position of
Re-examining the X-ray versus spin-down luminosity correlation of rotation powered pulsars
The empirical relation between the X-ray luminosity (in the 2{10 keV band) and the rate of spin-down energy loss Lsd of a sample of 39 pulsars is re-examined considering recent data from ASCA, RXTE,
The strongest cosmic magnets: soft gamma-ray repeaters and anomalous X-ray pulsars
Two classes of X-ray pulsars, the anomalous X-ray pulsars and the soft gamma-ray repeaters, have been recognized in the last decade as the most promising candidates for being magnetars: isolated
The magnetic field of an isolated neutron star from X-ray cyclotron absorption lines
A long X-ray observation of the same object in which the star's spectrum shows three distinct features, regularly spaced at 0.7, 1.4 and 2.1 keV, which allows us to calculate a magnetic field strength of 8 × 1010 G, assuming the absorption arises from electrons.
A Low-Magnetic-Field Soft Gamma Repeater
The magnetar population may include objects with a wider range of B-field strengths, ages, and evolutionary stages than observed so far, implying that this population is wider than was previously thought.
INTEGRAL detection of the first prompt gamma-ray signal coincident with the gravitational-wave event GW170817
We report the INTernational Gamma-ray Astrophysics Laboratory (INTEGRAL) detection of the short gamma-ray burst GRB 170817A (discovered by Fermi-GBM) with a signal-to-noise ratio of 4.6, and, for the
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 observational
A Long-Period, Violently Variable X-ray Source in a Young Supernova Remnant
Observations with the Newton X-ray Multimirror Mission satellite show a strong periodic modulation at 6.67 ± 0.03 hours of the x-ray source at the center of the 2000-year-old supernova remnant RCW
Aquila X-1 from Outburst to Quiescence: The Onset of the Propeller Effect and Signs of a Turned-on Rotation-powered Pulsar
We report on the 1997 March-April BeppoSAX observations of Aquila X-1, which were the first to monitor the evolution of the spectral and time-variability properties of a neutron star soft X-ray