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Very-High Energy Gamma-ray Astronomy: Search for Periodicity in Emission of Very High Energy Gamma-rays from the Supernova Remnant MSH 15-52

Very-High Energy Gamma-ray Astronomy: Search for Periodicity in Emission of Very High Energy Gamma-rays from the Supernova Remnant MSH 15-52

von Christo B. RAUBENHEIMER, Isak Delberth DAVIDS
Taschenbuch - 9783639364620
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Beschreibung

In 2004, for the first time in the history of very-high energy gamma-ray astronomy, diffuse emission of gamma-rays from a pulsar wind nebula, was observed from the supernova remnant, MSH 15-52, by the H.E.S.S (High Energy Stereoscopic System). The supernova remnant (SNR), MSH 15-52, consisting of a PWN which is powered by a 150 millisecond relatively young and energetic pulsar, B1509-58, was observed with H.E.S.S. during 23 nights. The likelihood of the pulsar periodicity being propagated into the PWN emission was investigated, by searching for periodicity of VHE gamma-ray emission at and near the radio period from the entire composite supernova remnant. Fourier analysis techniques were employed for searching for a pulsed signal. This was done via the well-known universally most powerful (UMP) test, the Rayleigh test, and the H-test. No pulsed emission could be seen using the Rayleigh test and the H-test. The Eadie combination method of Rayleigh test results also showed no evidence of strong flares. Therefore, there was no compelling evidence of pulsed VHE gamma-ray emission from the supernova remnant MSH 15-52 at and near the known pulsar radio period.

Details

Verlag VDM Verlag
Ersterscheinung Juli 2011
Maße 220 mm x 150 mm x 7 mm
Gewicht 201 Gramm
Format Taschenbuch
ISBN-13 9783639364620
Auflage Nicht bekannt
Seiten 124

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