Upper limits to the radio pulsation of 1E0630 + 178, indicated as possible X-ray counterpart of the gamma-ray source 2CG195 + 04

Details Upper limits to the radio pulsation of 1E0630 + 178, indicated as possible X-ray counterpart of the gamma-ray source 2CG195 + 04 Upper limits to the radio pulsation of 1E0630 + 178, indicated as possible X-ray counterpart of the gamma-ray source 2CG195 + 04

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ncimc...7..597f&link_type=abstract

(Convegno Nazionale di Fisica Cosmica, 2nd, L'Aquila, Italy, May 29-June 1, 1984) Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol

Astronomy and Astrophysics

Astronomy

4

Gamma Ray Astronomy, Neutron Stars, Pulsars, Radio Stars, X Ray Sources, Cos-B Satellite, Power Spectra, Radiant Flux Density

Scientific paper

In the framework of an experiment of search for fast pulsars inside the error boxes of the COS-B gamma-ray sources, a special effort has been done to observe with the best possible sensitivity the X-ray source 1E0630+178 believed to be a neutron star on the basis of the high ratio Lx/L0 between X-ray and optical luminosity. The object, which is located inside the error box of the gamma-ray source 2CG195+04 (Geminga) was observed at 318, 430, 1387 and 1414 MHz with long integration times and low sampling rate. The most sensible observation is that at 430 MHz for which a limiting flux threshold of 0.6 mJy has been reached for periods down to 2 ms. The power spectrum does not indicate the presence of any pulsation effect and so is, at slightly higher limiting flux thresholds, for all other frequencies.

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