HEAO observations of X-ray bursts from MXB1730-335

Details HEAO observations of X-ray bursts from MXB1730-335 HEAO observations of X-ray bursts from MXB1730-335

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.276..587h&link_type=abstract

Nature, vol. 276, Dec. 7, 1978, p. 587, 588.

Astronomy and Astrophysics

Astronomy

7

Heao, Satellite Observation, Spaceborne Astronomy, Type 2 Bursts, X Ray Sources, Astronomical Models, Energy Spectra, Radiant Flux Density, X Ray Astronomy

Scientific paper

The March 18, 1978 burst activity of the rapid burster MXB 1730-335 was studied by examining 58 minutes of quick-look data for the A2 and A4 experiments on HEAO 1. Very large, moderately sized, and small bursts are characterized. Type II bursts were found to show a spectral softening during burst decay. The existence of flux was sought in the 85-160 keV energy range, and it was found that the large type II bursts contain less than 5% of their total X-ray energy in this range. The implications of the lack of a hard X-ray flux with respect to accretion instability models of X-ray bursts are considered.

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