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Unveiling the multi-wavelength phenomenology of Anomalous X-ray Pulsars
GianLuca Israel, Luigi Stella, Stefano Covino +6
During 2002-2003 the number of IR-identified counterparts to the Anomalous X-ray Pulsars (AXPs) has grown to four (4U0142+614, 2E2259+584, 1E 1048-59 and 1RXS J170849-400910) out o…
X-ray/optical observations of A0535+26/HDE 245770 in quiescence
M. Orlandini, C. Bartolini, S. Campana +10
We present the result of three BeppoSAX observations of the X-ray binary pulsar A0535+26 in its quiescent state. The source is quite well detected up to 200 keV (6 sigma detection…
The variable quiescence of Cen X-4
S. Campana, G. L. Israel, L. Stella +2
Cen X-4 is one of the best studied low-mass neutron star transients in quiescence. Thanks to XMM-Newton large throughput, Cen X-4 was observed at the highest signal to noise ever.…
The glitches of the Anomalous X-ray Pulsar 1RXS J170849.0--400910
S. Dall'Osso, G. L. Israel, L. Stella +2
We report on a timing analysis of archival observations of the Anomalous X-ray Pulsar 1RXSJ170849.0-400910 made with the RXTE Proportional Counter Array. We detect a new large glit…
Unveiling the Nature of the 321 s Modulation in RX J0806.3+1527: Near-Simultaneous Chandra and VLT Observations
G. L. Israel, S. Covino, L. Stella +7
We report on the first near-simultaneous X-ray and optical observations of RX J0806.3+1527. The source is believed to be a 321s orbital period ultra-compact binary system hosting a…
XMM-Newton observation of the 5.25 ms transient millisecond pulsar XTE J1807-294 in outburst
S. Campana, M. Ravasio, G. L. Israel +2
We report on the results obtained for the millisecond transient X-ray pulsar XTE J1807-294 in a 40 min orbital period system, based on an XMM-Newton ToO observation carried out dur…