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HETE J1900.1-2455 is a millisecond pulsar.

ATel #523; Ed Morgan (MIT), Phil Kaaret (UIOWA), and Roland Vanderspek(MIT)
on 17 Jun 2005; 20:03 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Edward Morgan (ehmorgan@mit.edu)

Subjects: X-ray, Request for Observations, Binary, Neutron Star, Pulsar

Referred to by ATel #: 525, 526, 530, 533, 538, 543

The X-ray Burst source, HETE J1900.1-2455, discovered by HETE (Atel 516) was observed with the RXTE on 2005 June 16 and twice on June 17. All three observations show a source with a flux near 19 mCrab and pulsations at 377.3 Hz. Raster scans with the PCA are consistent with the HETE position. RXTE observations are continuing. Observations to obtain a more accurate X-ray position and to identify an optical counterpart are encouraged.