The most distant stellar source of very high energy gamma rays
December 2011 The Tarantula Nebula in Large Magellanic Cloud (Credit John P. Gleason). The very high energy gamma ray source N157B is located roughly in the center of this region, see also annotated animation…
A pulsar wind nebula in SNR G327.1-1.1
November 2011 Combined radio (red/yellow), X-ray (blue), infrared (white) image of the supernova remnant G327.1-1.1. Source: NASA/Chandra pages; credit: X-ray: NASA/CXC/SAO/T.Temim et al. and ESA/XMM-Newton Radio: SIFA/MOST and CSIRO/ATNF/ATCA; Infrared: UMass/IPAC-Caltech/NASA/NSF/2MASS G327.1-1.1 is a…
Gamma-ray emission from AP Librae
October 2011 VLBA radio image of the single-sided jet of the active galaxy Ap Librae The vast majority of very-high-energy gamma-ray-emitting active galaxies belong to the BL Lac class, itself subdivided into high-frequency, intermediate-frequency…
HESS J0632+057 identified as TeV binary
September 2011 The location of HESS J0632+057, coincident with the massive star MWC 148, near the Rosette Nebula and the Monoceros Loop. From Maier et al. 2011 Most Galactic TeV gamma-ray sources are extended…
Gamma rays from supernova G15.4+0.1
August 2011 Gamma ray sky map of the region of the supernova remnant G15.4+0.1. Superimposed in green are radio observations, in which the shell G15.4+0.1 was discovered. With increasing exposure in the H.E.S.S. Galactic…
Discovery of gamma-ray emission from the blazar 1ES 0414+009
July 2011 Star chart from the 1983 discovery paper (Ulmer et. al) where the X-ray source detected by HEAO 1 in the region defined by the parallel lines was identified as the blazar 1ES…
HESS J1831-098, a new gamma-ray discovered pulsar wind nebula?
June 2011 The source HESS J1831-098 and its location in the H.E.S.S. Galactic Plane Survey. HESS J1831-098 (top image and Fig. 1) is a new very high energy gamma-ray source at longitude 21.8 degr.…
Gamma-ray emission from the direction of the globular cluster Terzan 5
May 2011 Near infra-red image of the globular cluster Terzan 5. The field of view is 40 arcseconds across. (Source: ESO) Globular clusters (GCs) are very old stellar systems with exceptionally high densities of…
VHE gamma rays from the vicinity of the supernova remnant G318.2+0.1
April 2011 Radio image at 843 MHz of the supernova remnant G318.2+0.1 (Whiteoak & Green 1996). The on-going H.E.S.S. Galactic Plane Survey continues to reveal new sources of very high energy (VHE) gamma rays.…
Very high energy gamma rays from the blazar PKS 0447-439
March 2011 Energy output of PKS 0447-439 across the electromagnetic spectrum, based on archival radio data (magenta), optical data from the ATOM telescope (black circles), Swift UVOT data (green), X-ray data from Swift (red)…
