Emission from the region of SNR G22.7-0.2
May 2012 VLA radio image of the region of the supernova remnants G23.3-0.3 (left) – also known as W41, see SOM June 2006 – and G22.7-0.2, center. Source: MAGPIS – The Multi-Array Galactic Plane…
A mysterious gamma ray signal
April 2012 Can a yellow main sequence star with a distant companion star produce gamma rays? Credit: ESO/L. Calcada In April 2011, the H.E.S.S. telescopes targeted the object 1RXS J142209.1-174546 as a potential source…
The Active Galactic Nucleus 1RXS J101015.9−311909
March 2012 Image of the host galaxy of the X-ray source 1RXS J101015.9−311909, from the 2MASS sky survey (Jarrett et al. 2000). Active galactic nuclei (AGN) with high X-ray and radio emission represent promising…
An extended source of TeV gamma rays towards the magnetar SGR1806-20
February 2012 The location of the magnetar SGR 1806-20 in the constellation Sagittarius, at a distance of about 10 kpc (with large uncertainty). From Wikipedia. SGR 1806-20 is a magnetar, a neutron star with…
The “serendipitous” discovery of the blazar 1ES 1312−423
January 2012 Verv high energy gamma ray sources discovered by H.E.S.S., as shown by TeVCat. The yellow circle indicates the two nearby active galactic nuclei Centaurus A and 1ES 1312−423, the colored area shows…
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…