A Search for the X-ray counterpart of the Unidentified Gamma-Ray source 3EG J2020+4017

Details A Search for the X-ray counterpart of the Unidentified Gamma-Ray source 3EG J2020+4017 A Search for the X-ray counterpart of the Unidentified Gamma-Ray source 3EG J2020+4017

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1699w&link_type=abstract

Chandra Proposal ID #06500327

Physics

Chandra Proposal Id #06500327

Scientific paper

The nature of the unidentified gamma-ray source 2CG078+2, which appears to be in the center of the SNR G78.2+2.1 has remained a mystery since its discovery in the mid 70's with COS-B. Even the much more sensitive observation with EGRET has not resolved the puzzle. Although its gamma-ray emission properties strongly argue for a Geminga-like radio-silent neutron star, this is only a working hypothesis. ROSAT observations of the remnant had discovered a possible X-ray counterpart which we pursued in Cycle-4. However, the Chandra position of the putative counterpart firmly established that the ROSAT source was not the Gamma-ray source. We follow that work with this proposal for a 15 ksec ACIS-I observation, centered on the best EGRET position, and not covered in the previous observation.

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