New pulsar 1SAX J1452.8-5949
ATel #42; M. Orlandini, TeSRE/CNR Bologna; T. Oosterbroek and A. N Parmar, SSD/ESA ESTEC; L. Angelini, NASA/Goddard Space Flight Center, on behalf of the BeppoSAX Galactic Plane Survey Group
on 26 Aug 1999; 07:21 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Mauro Orlandini (orlandini@tesre.bo.cnr.it)
Subjects: X-ray, Transient, Pulsar
M. Orlandini, TeSRE/CNR Bologna; T. Oosterbroek and A.N Parmar, SSD/ESA
ESTEC; L. Angelini, NASA/Goddard Space Flight Center, on behalf of the
BeppoSAX Galactic Plane Survey Group report the discovery of a 437.4
+/- 1.4 s X-ray pulsar located at R.A. = 14h52m49s, Decl. = -59o49'03"
(equinox 2000.0; uncertainty radius 50"). A Lomb-Scargle periodogram
analysis shows that the pulsation is significant at 99% confidence. The
pulse profile is single peaked, 90% modulated, with no obvious energy
dependence. During the 20 ks observation, performed on July 20.5,
the source did not show any substantial spectral variability. The 2-10
keV MECS spectrum is fit by an absorbed power-law of photon index
1.7 +/- 0.5. The photoelectric absorption is compatible with the galactic
value in the source direction. A 6.5 +/- 0.2 keV emission line is also
present (EW 1.1 keV). The un-absorbed 2-10 keV flux is 9 x 10E-13
erg sE-1 cmE-2. The 2sigma upper limit in the PDS 15-30 keV band is
0.9 mCrab.
