Bursting Pulsar

The Bursting Pulsar (GRO J1744-28) is a low-mass x-ray binary with a period of 11.8 days. It was discovered in December 1995 by the Burst and Transient Source Experiment on the Compton Gamma-Ray Observatory, the second of the NASA Great Observatories. The pulsar is unique in that it has a "bursting phase" where it emits gamma rays and X-rays peaking at approximately 20 bursts per hour after which the frequency of bursts drops off and the pulsar enters a quiescent phase. After a few months, the bursts reappear, though not yet with predictable regularity.^[2]

Bursting Pulsar

Observation data Epoch J2000      Equinox J2000
Constellation	Sagittarius
Right ascension	17h 44m 33.1s[1]
Declination	−28° 44′ 29″[1]
Details
Rotation	2.141 second−1
Other designations
2EG J1746-2852, 3EG J1746-2851, INTREF 820, AX J1744.5-2844
Database references
SIMBAD	data

The Bursting Pulsar is the only known X-ray pulsar that is also a Type II X-ray burster.^[1]