Radio detections towards unidentified variable EGRET sources
نویسندگان
چکیده
منابع مشابه
Unidentified Egret Sources
The Compton Gamma-Ray Observatory was launched in early 1991 and deorbited in June, 2000. Between April 1991 and September 1995, the Energetic Gamma Ray Experiment Telescope (EGRET) detected 416 gamma-ray excesses with a significance of more than 3 σ above the diffuse background emission. After a careful analysis with a maximum-likelihood procedure, only 271 of these sources were included in th...
متن کاملPopulation studies of the unidentified EGRET sources
The third EGRET catalog contains a large number of unidentified sources. This subset of objects is expected to include known gamma-ray emitters of Galactic origin such as pulsars and supernova remnants, in addition to an extragalactic population of blazars. However, current data allows the intriguing possibility that some of these objects may represent a new class of yet undiscovered gamma-ray ...
متن کاملUnidentified Egret Sources in the Galaxy
Identifying γ-ray sources in the Galaxy is hampered by their poor localization, source confusion, and the large variety of potential emitters. Neutron stars and their environment offer various ways to power γ-ray sources: pulsed emission from the open magnetosphere and unpulsed γ rays from the wind nebula and from the cosmic rays accelerated in the supernova remnant. While the latter still awai...
متن کاملRecently Discovered Pulsars and Unidentified Egret Sources
We present a correlative study between all unidentified EGRET sources at low Galactic latitudes and the newly discovered pulsars in the released portion of the Parkes multibeam radio survey. We note 14 positional coincidences: eight of these are “Vela-like” pulsars, with relatively small periods, small characteristic ages, and high spin-down luminosities. Three of these coincidences have been i...
متن کاملPulsar Searches of Unidentified EGRET Sources
The majority of Galactic high-energy γ-ray sources continue to elude identification. Currently, we have a handful of firm pulsar identifications, one of which is radio quiet, and a few marginal detections, including one millisecond pulsar. Recently, both blind searches of EGRET error boxes and targeted searches of X-ray counterpart candidates have had some success in finding new pulsars. I revi...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2008
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20078299