Frequency independent quenching of pulsed emission

Journal Article · Wed Dec 10 00:00:00 EST 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/797/1/18· OSTI ID:22370089

Gajjar, Vishal; Joshi, Bhal Chandra ^[1]; Kramer, Michael; Karuppusamy, Ramesh ^[2]; Smits, Roy ^[3]

---

1. National Centre for Radio Astrophysics (TIFR), Post Bag 3, Ganeshkhind, Pune 411007 (India)
2. Max Planck Institute for Radio Astronomy Auf dem Hugel 69, P.O. Box 20 24, D-53010 Bonn (Germany)
3. Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)

Simultaneous observations at four different frequencies, 313, 607, 1380, and 4850 MHz, for three pulsars, PSRs B0031–07, B0809+74, and B2319+60, are reported in this paper. Identified null and burst pulses are highly concurrent across more than a decade of frequency. A small fraction of non-concurrent pulses (≤3%) is observed, most of which occur at the transition instances. We report, with very high significance for the first time, the full broadband nature of the nulling phenomenon in these three pulsars. These results suggest that nulling invokes changes on the global magnetospheric scale.

• OSTI ID: 22370089
• Journal Information: Astrophysical Journal, Vol. 797, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
EMISSION
PULSARS
PULSES
QUENCHING
STELLAR MAGNETOSPHERES