Interpulse emission from pulsars at 25 MHz

Details Interpulse emission from pulsars at 25 MHz Interpulse emission from pulsars at 25 MHz

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344l..69p&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 344, Sept. 15, 1989, p. L69-L71. Research supported by Cornell Un

Astronomy and Astrophysics

Astronomy

9

Extragalactic Radio Sources, Pulsars, Radio Astronomy, Spectrum Analysis, Temporal Distribution, Astronomical Spectroscopy, Power Spectra, Radio Spectroscopy, Signal To Noise Ratios

Scientific paper

Six pulsars were detected at 25 MHz with the Arecibo 1000 foot (304 m) radio telescope. Three of these had been previously reported by other observers to exhibit sporadic, intense interpulse emission (IPE) at decameter wavelengths. In the present high signal-to-noise ratio profiles, there was no evidence for interpulse emission. The integrated profiles of the two strongest low-frequency pulsars, PSR 0950+08 and PSR 1133+16, set the strongest limits on IPE. For those two, there was no interpulse emission exceeding 5 percent of the main pulse height for PSR 0950+08 and 3 percent for PSR 1133+16. It is asserted that previous reports of the controversial IPE were largely an artifact of poor signal-to-noise ratios in low-frequency profiles.

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