Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981assl...87...61o&link_type=abstract
In: X-ray astronomy with the Einstein satellite; Proceedings of the Meeting, Cambridge, MA, January 28-30, 1980. (A82-33476 16-9
Astronomy and Astrophysics
Astronomy
5
Bursts, Neutron Stars, Satellite Observation, X Ray Astronomy, Infrared Radiation, Japanese Space Program, Light Emission, Tables (Data)
Scientific paper
Observational results on X-ray bursts obtained by the Japanese X-ray satellite are reviewed in conjunction with the general context of the neutron star model of the burst. Evidence indicates the existence of physically different kinds among type-I bursts which are widely believed to be from a thermonuclear flash occurring on the surface of a neutron star. There are cases which can not be accounted for by a simple nuclear flash model: the flash in a confined region of the surface and a change of the emitting area during the burst are suggested. Two type-I bursts were observed in succession within a short interval which was not of sufficient duration to accumulate the nuclear fuel for a flash. Coordinated optical/X-ray observations of bursts were performed. Optical bursts are tentatively interpreted in terms of the reprocessing of X-rays are at the accretion disk. The results will provide the basis for a discussion of the physical structure of the system. The evolution of the activity of type-II bursts from the rapid burster was observed from its onset for about two weeks and a novel mode of burst activity was discovered.
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