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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PublicationChandra Observations of the M31 X-Ray Transients XMMU J004245.9+411036 and XMMU J004241.2+411821
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PublicationChemical 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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PublicationConfirmation 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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PublicationCorrection 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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PublicationDeep 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 × 1014 G, which is very young compared...
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PublicationDetection 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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PublicationDetection 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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PublicationDiscovery 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...
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PublicationDiscovery of burst oscillations near the spin frequency in the intermittent accreting millisecond pulsar HETE J1900.1-2455
RXTE observations of the intermittent accreting millisecond X-ray pulsar HETE J1900.1-2455 (Kaaret et al. 2006 ApJ 638, 963; Galloway et al. 2007 ApJ 654, L73)...