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…
HESS discovers gamma rays from the Active Galaxy PKS 0548-322
June 2010 The Active Galactic Nucleus PKS 0548-322 as seen by HESS in Very High Energy gamma rays. PKS 0548−322 is a nearby and bright BL Lac object, located at a distance of one…
More about HESS J1708-410
May 2010 Very high energy gamma-ray image of HESS J1708-410. The dashed line indicates the galactic equator. Roughly half of the gamma-ray sources discovered by H.E.S.S. lack definitive counterparts at other wavelengths, and a…
A new VHE gamma-ray source emerging near the Westerlund 2 stellar cluster
April 2010 Chandra X-ray view of the central 8′ of the Westerlund 2 cluster. The red, green and blue colors correspond to soft (0.3 – 1 keV), medium (1 – 2 keV) and hard…
Vela X revisited
March 2010 90 cm Radio image of Vela X (Frail et al. 1997) . The image shows a high-intensity region emerging south from the Vela pulsar – termed the cocoon (yellow circle) – and…
Forgotten sources? HESS J1634-472 and HESS J1632-478
February 2010 Gamma-ray sky map of the regions of HESS J1634-472 and HESS J1632-478. Also included are the locations of four Fermi LAT sources (black dashed circles; the circle size indicates position uncertainty, not…
