As part of our ongoing Chandra/HST M31 transient program we report on Chandra ACIS observations of M31 containing the new transient sources reported by Pietsch...
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PublicaciónChandra Observations of the M31 X-Ray Transients XMMU J004245.9+411036 and XMMU J004241.2+411821
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PublicaciónChemical composition of secondary stars in LMXBs: implications on the progenitors of black holes and neutron stars
Recent studies of chemical abundances of secondary stars in low mass X-ray binaries have opened a new window to obtain information on the progenitors of black...
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PublicaciónConfirmation of the NIR counterparts to SLX 1746-331 and XTE J1810-189
We present infrared observations of the counterparts to the X- ray transients SLX 1746-331 and XTE J1810-189 obtained with the 6.5m Magellan Baade telescope at...
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PublicaciónCorrection to ATEL 871: A Swift/XRT observation of Aql X-1 during its recent outburst
In ATEL #871 the fluxes were incorrectly quoted. All the fluxes should be multiplied by 1E-10 in order to obtain the correct values. The quoted luminosities are...
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PublicaciónDeep X-Ray and Radio Observations of the First Outburst of the Young Magnetar Swift J1818.0-1607
Swift J1818.0-1607 is a radio-loud magnetar with a spin period of 1.36 s and a dipolar magnetic field strength of B ~ 3 × 10 14 G, which is very young compared...
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NoticiaDescubren un sistema estelar binario de tipo “viuda negra” con el periodo orbital más corto registrado hasta ahora
Mientras que la Tierra tarda 365 días en completar su órbita alrededor del Sol, la estrella que orbita el nuevo púlsar ZTF J1406+1222 lo hace en tan sólo 62...
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PublicaciónDetection of coherent millisecond pulsations at ~518 Hz in the LMXB Swift J1749.4-2807 (GRB060602B)
On April 10th, it was discovered (ATel #2548) using INTEGRAL that the neutron-star X-ray binary Swift J1749.4-2807 (Wijnands et al. 2009, MNRAS, 393, 126) was...
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PublicaciónDetection of pulsations and identification of SAX J1748.9-2021 as the X-ray transient in NGC 6440.
On the 28th of December, MAXI/GSC detected an X-ray outburst from the globular cluster NGC6440 (Atel #2360), which has continued to the present.
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PublicaciónDiscovery of a Gamma-Ray Black Widow Pulsar by GPU-accelerated Einstein@Home
We report the discovery of 1.97 ms period gamma-ray pulsations from the 75 minute orbital-period binary pulsar now named PSR J1653-0158. The associated Fermi...