1 v 1 1 J ul 1 99 7 TeV Gamma Ray Emission from Southern Sky Objects and CANGAROO Project
نویسندگان
چکیده
We report recent results of the CANGAROO Collaboration on very high energy gamma ray emission from pulsars, their nebulae, SNR and AGN in the southern sky. Observations are made in South Australia using the imaging technique of detecting atmospheric Cerenkov light from gamma rays higher than about 1 TeV. The detected gamma rays are most likely produced by the inverse Compton process by electrons which also radiate synchrotron X-rays. Together with information from longer wavelengths , our results can be used to infer the strength of magnetic field in the emission region of gamma rays as well as the energy of the progenitor electrons. A description of the CANGAROO project is also given, as well as details of the new telescope of 7 m diameter which is scheduled to be in operation within two years.
منابع مشابه
TeV Gamma Ray Emission from Southern Sky Objects and CANGAROO Project
We report recent results of the CANGAROO Collaboration on very high energy gamma ray emission from pulsars, their nebulae, SNR and AGN in the southern sky. Observations are made in South Australia using the imaging technique of detecting atmospheric Cerenkov light from gamma rays higher than about 1 TeV. The detected gamma rays are most likely produced by the inverse Compton process by electron...
متن کاملPresent Status of the 7710 M Telescope of Cangaroo Ii
A 7/10 m diameter Cerenkov telescope of the CANGAROO II project will start operation in 1999 in Woomera, South Australia, with a 7 m aperture using 60 plastic mirrors. The telescope aims to observe 100 GeV gamma-ray sources in the southern sky. Preprint submitted to Elsevier Preprint 2 December 1998 Table 1 Characteristics of the CANGAROO 7/10 m telescope. Mirror Type Composite Shape of the fra...
متن کاملTeV gamma-ray observations of Southern BL Lacs with the CANGAROO 3.8m Imaging Telescope
Observational and theoretical results indicate that low-redshift BL Lacertae objects are the most likely extragalactic sources to be detectable at TeV energies. In this paper we present the results of observations of 4 BL Lacertae objects (PKS0521 365, EXO0423.4 0840, PKS2005 489 and PKS2316 423) made between 1993 and 1996 with the CANGAROO 3.8m imaging Cerenkov telescope. During the period of ...
متن کاملAstrophysical Journal Letters, in press DISCOVERY OF TEV GAMMA RAYS FROM SN1006: FURTHER EVIDENCE FOR THE SNR ORIGIN OF COSMIC RAYS
This paper reports the rst discovery of TeV gamma-ray emission from a supernova remnant made with the CANGAROO 3.8 m Telescope. TeV { 2 { gamma rays were detected at the sky position and extension coincident with the northeast (NE) rim of shell-type Supernova remnant (SNR) SN1006 (Type Ia). SN1006 has been a most likely candidate for an extended TeV Gamma-ray source, since the clear synchrotron...
متن کاملar X iv : a st ro - p h / 03 01 14 7 v 1 9 J an 2 00 3 Galactic Gamma - Ray Halo of the Nearby Starburst Galaxy NGC 253
Recently, the CANGAROO-II telescope detected diffuse TeV gamma-ray emission from a nearby edge-on starburst galaxy, NGC 253. The emission mechanism is discussed in this report. We review the emissions of radio-to-TeV gamma-rays from NGC 253, and present a model of the non-thermal emissions due to synchrotron radiations and inverse Compton scatterings. A halo model successfully explains the mult...
متن کامل