1970
DOI: 10.1038/225839a0
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Search for High Energy Gamma Rays from Four Pulsars

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Cited by 11 publications
(4 citation statements)
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“…Ground-based GRA was pioneered in India in 1969, soon after the discovery of a pulsar in the Crab Nebula in 1968. In the beginning, a very systematic search was made for pulsed γ-ray emission above the detection threshold energy of ∼10 TeV from six pulsars using Cherenkov telescopes at Ooty [21]. Not having found any statistically significant TeV γ-ray emission from any source, upper limits of the order of 10 −11 ph cm −2 s −1 were placed on the γ-ray fluxes [22].…”
Section: Early Times: Important Achievementsmentioning
confidence: 99%
See 1 more Smart Citation
“…Ground-based GRA was pioneered in India in 1969, soon after the discovery of a pulsar in the Crab Nebula in 1968. In the beginning, a very systematic search was made for pulsed γ-ray emission above the detection threshold energy of ∼10 TeV from six pulsars using Cherenkov telescopes at Ooty [21]. Not having found any statistically significant TeV γ-ray emission from any source, upper limits of the order of 10 −11 ph cm −2 s −1 were placed on the γ-ray fluxes [22].…”
Section: Early Times: Important Achievementsmentioning
confidence: 99%
“…In the beginning, a very systematic search was made for pulsed γ-ray emission above the detection threshold energy of ∼10 TeV from six pulsars using Cherenkov telescopes at Ooty [21]. Not having found any statistically significant TeV γ-ray emission from any source, upper limits of the order of 10 −11 ph cm −2 s −1 were placed on the γ-ray fluxes [22]. A number of isolated pulsars (Crab, Vela, PSR0355+54, Geminga) and Xray binaries (Hercules X-1) were monitored by experimental set-ups at Ooty and Pachmarhi, and positive signals were detected from them on several occasions.…”
Section: Early Times: Important Achievementsmentioning
confidence: 99%
“…Alongside with these two reliably detected gamma sources, there appeared some further publications on observations of pulsars: CP 1133 [7], CP0950 [8], MP 0254 [9], and HP 1506 [10].…”
Section: Observations Of Pulsarsmentioning
confidence: 99%
“…Pulsars were proposed to be the site of origin of high energy cosmic rays and hence the sources of ultra high energy γ-rays. They searched for pulsed emission of γ-rays from 6 pulsars with the same periodicities as observed at radio frequencies [7]. The Cherenkov light was detected by 2 large search light mirrors (f/ 0.45 mirrors of 90 cm dia) which focused it onto fast (56 AVP) photo-multipliers (PMT) placed at their foci as shown in Fig.…”
Section: Early Historymentioning
confidence: 99%