Optical bursts from 4U/MXB 1636-53

H. Pedersen, J. van Paradijs, C. Motch, L. Cominsky, A. Lawrence, W. H. G. Lewin, M. Oda, T. Ohashi, M. Matsuoka

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)340-351
JournalAstrophysical Journal
Publication statusPublished - 1 Dec 1982


  • 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


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