Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop.1340b&link_type=abstract
Chandra Proposal ID #03408116
Astronomy and Astrophysics
Astronomy
Chandra Proposal Id #03408116
Scientific paper
Observation by HEGRA at TeV energies has revealed the first, and only, unidentified TeV source, TeV J2032+4130 at the 4.6sigma level in Cyg OB2 association. It is marginally consistent with the location of unidentified EGRET (GeV) source 3EG J2033+4118 and has luminosity ~0.03 Crab in TeV. The source's 2sigma error location circle is just 6 arcmin in radius, well suited to CHANDRA ACIS-I field of view. Chandra data on point-like vs. diffuse emission + spectra will constrain source. In particular, we will resolve whether one of the sources observed by ROSAT, 2RXP 203218.1+412807, seen in one of our Cyg OB2 datasets could be related to the TeV emission -- we cannot tell if the ROSAT source is intrinsically diffuse or point-like, nor can we yet constrain its spectrum. We expect an ACIS-I ct rate of ~0.25 cts/sec from this source. There is some urgency since the source may show variability on timescales of months. Please see astro-ph/0207528 and Benaglia et al., A&A,366,605.
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