Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40...91v&link_type=abstract
(ESA, ESLAB Symposium on X-Ray Astronomy in the EXOSAT Era, 18th, The Hague, Netherlands, Nov. 5-9, 1984) Space Science Reviews
Astronomy and Astrophysics
Astronomy
Gamma Ray Spectra, Visible Spectrum, X Ray Sources, X Ray Spectra, Exosat Satellite, Heao 2, Periodic Variations, Spectral Energy Distribution, Spectrum Analysis, Temporal Distribution
Scientific paper
Einstein and EXOSAT data on the soft X-ray source 1E 0630+178, the proposed counterpart of the γ-ray source Geminga, are analyzed for variability on the time scale of one to three hours. The EXOSAT September 1983 data, with an uninterrupted stretch of over 10 hours offer the most interesting case. In parallel, a similar analysis is presented for the first time, for the optical data of the mv ≡ 21 proposed counterpart. About 30 CCD exposures, of 15 min. each, taken over two consecutive nights at the 3.6 m CFH telescope, yield evidence of variability, when compared to the data of similar nearby objects in the field.
Bignami Giovanni F.
Caraveo Patricia A.
Delache Ph.
Paul J. A.
Vigroux Laurant
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