Swift XRT Observations of AXP 4U 0142+61: Evidence for a Modified Pulse Profile

Details Swift XRT Observations of AXP 4U 0142+61: Evidence for a Modified Pulse Profile Swift XRT Observations of AXP 4U 0142+61: Evidence for a Modified Pulse Profile

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1001....1p&link_type=abstract

The Astronomer's Telegram, #1001

Astronomy and Astrophysics

Astronomy

X-Ray, Neutron Stars, Pulsars

Scientific paper

The anomalous X-ray pulsar 4U 0142+61 was observed with Swift XRT again on 10 Feb 2007 (MJD 54141) in Window Timing mode with 1.766 ms time resolution. At the observed XRT total count rate (5.0 c/s) pile-up was negligible. We find a good fit (chi^2/dof=291.2/272) to the data using an absorbed blackbody plus power law model with N_H=(0.90+/-0.08 ) x 1e22 cm^-2, PL index= 3.8 +/- 0.2 and kT_BB = 0.38 +/- 0.02 (errors are at 90% CL).

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