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)…
HESS J1852-000 near the supernova remnant Kes 78
February 2011 Multi-wavelength view of the region around Kes 78. The radio shell of the SNR is shown in the upper-left panel, and is overlaid on the CO image (upper right), as well as…
The incredible shrinking source HESS J1303-631
January 2011 Energy mosaic of HESS J1303-631. Red: gamma rays below 2 TeV, green: 2 TeV to 10 TeV, blue: above 10 TeV. The highest energy photons originate nearest the pulsar, PSR J1301−6305 (marked…
Very high energy gamma rays from the W49 region
December 2010 A composite Chandra X-ray (blue) and Palomar infrared (red and green) image of the supernova remnant W49B reveals a barrel-shaped nebula (Source: X-ray: NASA/CXC/SSC/J. Keohane et al.; Infrared: Caltech/SSC/J.Rho and T. Jarrett).…
HESS J1943+213: an extreme BL Lac object?
November 2010 Our Galaxy with its spiral arms (from Wikipedia). The distance from the sun (cross of the lines indicating directions of constellations) to the center of the Galaxy is about 8.5 kpc. HESS…
A new SNR shell resolved in TeV gamma rays
October 2010 New very high energy gamma-ray image of HESS J1731-347, resolving a shell coincident with the radio shell G356.6-0.7 (region A). Outside the shell, a gamma-ray excess of 7.5 sigma significance is seen…
A multi-wavelength view of HESS J1626-490
September 2010 Radio image of the region around HESS J1626-490, showing as a prominent feature the (in projection) nearby supernova remnant G335.2+0.1. The black contour lines indicate the very high energy gamma-ray source. The…
Yet another gamma-ray source in the Westerlund 2 field of view
August 2010 Gamma-ray sky around the Westerlund 2 region. The extended bright source in the North is the HESS J1023-575 / HESS J1026-582 complex, see SOM 4/2010. As a result of deep observations of…
Probing quantum gravity with TeV gamma rays
July 2010 The light curve of gamma-rays in the huge flare of the blazar PKS 2155-304 in 2006 can be used to search for a Lorentz-invariance violating variation of the speed of light with…
