Spectral observation of the composite supernova remnant G 29.7 - 0.3

Details Spectral observation of the composite supernova remnant G 29.7 - 0.3 Spectral observation of the composite supernova remnant G 29.7 - 0.3

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..521k&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

2

Astronomical Spectroscopy, Spaceborne Astronomy, Supernova Remnants, Synchrotron Radiation, X Ray Spectra, Energy Spectra, Exosat Satellite, Hydrogen, Radiant Flux Density, Relativistic Electron Beams, Stellar Evolution, Stellar Magnetic Fields, Stellar Spectrophotometry

Scientific paper

The X-ray properties of the supernova remnant G 29.7 - 0.3 are discussed based on spectral data from the Exosat satellite. In the 2 to 10 keV range, a featureless power-law spectrum is obtained, the best-fit parameters being: energy spectral index alpha = -0.77, hydrogen column density on the line of sight N(H) = 2.3 x 10 to the 22nd per sq cm. The incident X-ray flux from the source is (3.6 + or - 0.1) x 10 to the -11th erg/sq cm per sec in the 2 to 10 keV range, corresponding to an intrinsic luminosity of about 2 x 10 to the 36th erg/sec for a distance of 19 kpc. The source was not seen with the imaging instrument, thus constraining the hydrogen column density to be N(H) = (3.3 + or - 0.3) x 10 to the 22nd per sq cm and the energy spectral index alpha = 1.0 + or - 0.15. This new observation is consistent with emission by a synchrotron nebula, presumably fed by an active pulsar. An upper limit of approximately 1.5 percent for the pulsed fraction, in the range of periods 32 ms to 10,000 s, has been obtained.

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