Optical bursts from 4U/MXB 1636-53

Details Optical bursts from 4U/MXB 1636-53 Optical bursts from 4U/MXB 1636-53

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..340p&link_type=abstract

Astrophysical Journal, Part 1, vol. 263, Dec. 1, 1982, p. 340-351. Research supported by Zonta International and Japan-U.S. Coo

Astronomy and Astrophysics

Astrophysics

25

Astronomical Photometry, Bursts, Light Emission, Radiant Flux Density, X Ray Sources, Astronomical Spectroscopy, Black Body Radiation, Correlation Detection, Temporal Distribution, Thermonuclear Reactions, Ubv Spectra, Visible Spectrum

Scientific paper

The results of observations of 15 and 26 optical bursts detected during June and July 1979 and June and July 1980, respectively, from the X-ray burst source 4U/MXB 1636-53 in a 'white light' passband are presented. The maximum burst fluxes above the persistent optical flux and integrated burst fluxes are correlated, and it appears that the maximum optical and X-ray burst fluxes are related according to a power law, consistent with optical emission from blackbody reprocessing of X-rays. The approximately linear relationship between the integrated optical and X-ray burst fluxes argues against this simple picture. The correlation of burst fluxes with waiting time since the previous burst suggests that large optical bursts come after a long waiting time. Short burst intervals observed both for optical and X-radiation suggest that not all available nuclear fuel is consumed in the thermonuclear flash which gives rise to the X-ray burst.

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