Observations of the X-ray burst source MXB 1636-53

Details Observations of the X-ray burst source MXB 1636-53 Observations of the X-ray burst source MXB 1636-53

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...217l..23h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 217, Oct. 1, 1977, p. L23-L28.

Astronomy and Astrophysics

Astronomy

61

Sas, Spaceborne Astronomy, X Ray Sources, Emission Spectra, Radiation Distribution

Scientific paper

X-ray bursts have been observed from MXB 1636-53, almost certainly associated with the strong steady X-ray source 2S 1636-536 (Norma X-1, 3U 1636-53). The steady source was observed in January 1977 at roughly half the intensity reported in the 3U catalog and showed about 15% variability on a time scale of hours. The spectra of the X-ray bursts are well fitted by blackbody radiation whose temperature rises rapidly to a maximum of approximately 28 million K and then cools slowly. If the source is at a distance of 10 kpc, the radius of the projected burst emission region is about 10 km, similar to the size of a neutron star.

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