Paris, 15 january 2013
1 H.E.S.S.: 'High Energy Stereoscopic System'. The international HESS collaboration currently brings together 180 researchers from 28 laboratories in 12 different countries, mainly in Germany and France.
2 The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars. Ackermann et al., Science, published online on 1 November 2012 and in print 30 November 2012 (Vol. 338 no. 6111 pp. 1190-1192). 10.1126/science.1227160.
Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.. Collaboration HESS. Astronomy & Astrophysics, on line 16 January 2013.
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