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INTEGRAL and XMM-Newton observations of AX J1845.0-0433
J. A. Zurita Heras, R. Walter
AX J1845.0-0433 is a transient high-mass X-ray binary discovered by ASCA. The source displays bright and short flares observed recently with INTEGRAL. The transient behaviour and t…
An infrared ring around the magnetar SGR 1900+14
S. Wachter, E. Ramirez-Ruiz, V. V. Dwarkadas +4
Magnetars are a special class of slowly rotating neutron stars with extremely strong magnetic fields -- at least an order of magnitude larger than those of the "normal" radio pulsa…
Spitzer Space Telescope Observations of Low Mass X-ray Binaries
Stefanie Wachter
We present preliminary results from our archival Spitzer Space Telescope program aimed at characterizing the mid-IR properties of compact objects, both isolated and in binary syste…
Spitzer 24-micron Time-Series Observations of the Eclipsing M-dwarf Binary GU Bootis
Kaspar von Braun, Gerard T. van Belle, David R. Ciardi +3
We present a set of {\it Spitzer} 24m MIPS time series observations of the M-dwarf eclipsing binary star GU Boötis. Our data cover three secondary eclipses of the system: two co…
Absolute Calibration and Characterization of the Multiband Imaging Photometer for Spitzer. III. An Asteroid-based Calibration of MIPS at 160 microns
J. A. Stansberry, K. D. Gordon, B. Bhattacharya +15
We describe the absolute calibration of the Multiband Imaging Photometer for Spitzer (MIPS) 160 micron channel. After the on-orbit discovery of a near-IR ghost image that dominates…
The quasi-persistent neutron star soft X-ray transient 1M 1716-315 in quiescence
P. G. Jonker, C. G. Bassa, S. Wachter
We report on our analysis of a 20 ksec Chandra X-ray observation of the quasi-persistent neutron star soft X-ray transient (SXT) 1M1716-315 in quiescence. Only one source was detec…