Failure to detect millisecond radio pulses from M87

Details Failure to detect millisecond radio pulses from M87 Failure to detect millisecond radio pulses from M87

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245l..99m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 245, May 1, 1981, p. L99-L101.

Astronomy and Astrophysics

Astronomy

2

Elliptical Galaxies, Galactic Radio Waves, Radio Astronomy, Radiant Flux Density, Sensitivity, Virgo Galactic Cluster

Scientific paper

Observations at 1.4 GHz which were four times more sensitive than those of Linscott and Erkes (1980) and extended over more than 50 times the duration of their observations failed to confirm their reported detection of dispersed pulses from M87. No difference was found between dynamic spectra recorded on M87 and on cold sky near M87. Tests showed that any pulses with millisecond durations and flux densities not less than 30 Jy and essentially continuous across 25 MHz at 1.4 GHz would have been seen clearly in the dynamic spectra. Observations with a real-time dedisperser would have detected any pulses with dispersion measures between 866 and 4000/cu cm pc and having a 1 ms averaged flux density of not less than 15 Jy.

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