Further analysis of SAS 3 observations of the rapid burster /MXB 1730-335/

Details Further analysis of SAS 3 observations of the rapid burster /MXB 1730-335/ Further analysis of SAS 3 observations of the rapid burster /MXB 1730-335/

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...227..555m&link_type=abstract

Astrophysical Journal, Part 1, vol. 227, Jan. 15, 1979, p. 555-562.

Astronomy and Astrophysics

Astrophysics

45

Neutron Stars, Radio Bursts, Sas-3, Spectrum Analysis, Stellar Spectra, X Ray Sources, Ariel 5 Satellite, Black Body Radiation, Cosmic X Rays, Ionization, Luminous Intensity, Particle Energy, Stellar Luminosity, Stellar Temperature

Scientific paper

SAS 3 observations of the rapid burster MXB 1730-335 are analyzed with specific reference to the rapidly repetitive type II bursts and also the type I bursts. It is found that: (1) there are two stable patterns in the recurrence of the rapidly repetitive type II bursts, designated modes I and II; (2) the range of type II burst energies is a factor of about 100 for mode I and a factor of about 10 for mode II; (3) type II burst spectra are best fitted by a blackbody of constant temperature (of the order of 18 million K), constant column density, and decreasing intensity; and (4) type I bursts are best fitted by a blackbody spectrum with decreasing temperature (approximately 24 million K during the first few seconds and 16 million K about 10 sec later). The spectral fits for both types of burst are shown to yield sizes for the emission region comparable to the radius of a neutron star. A model for the rapid burster is suggested.

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