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The shock wave of supernova remnants (SNRs) and the wind termination shock inpulsar wind nebula (PWNe) are considered as prime candidates to accelerate thebulk of Galactic cosmic ray (CR) ions and electrons. The SNRs hosting a PWN(known as composite SNRs) provide excellent laboratories to test thesehypotheses. The SNR G327.1-1.1 belongs to this category and exhibits a shelland a bright central PWN, both seen in radio and X-rays. Interestingly, theradio observations of the PWN show an extended blob of emission and a curiousnarrow finger structure pointing towards the offset compact X-ray sourceindicating a possible fast moving pulsar in the SNR and/or an asymmetricpassage of the reverse shock. We report here on the observations, for a totalof 45 hours, of the SNR G327.1-1.1 with the H.E.S.S. telescope array whichresulted in the detection of TeV gamma-ray emission in spatial coincidence withthe PWN.

Detection of TeV emission from the intriguing composite SNR G327.1-1.1