26 June 2011 to 1 July 2011
Montpellier, France
Europe/Paris timezone

A new nearby PWN overlapping the VelaJr SNR

27 Jun 2011, 16:25
Main amphitheater (Polytech)

Main amphitheater



Dr Fabio Acero (LUPM Montpellier)


PSR J0855–4644 is an energetic pulsar (Edot = 1.1 × 10^36 erg/s) with a period of 65 ms recently discovered near the South-East rim of the supernova remnant RX J0852.0-4622 (aka VelaJr) by the Parkes Multibeam Survey.The position of the pulsar is in spatial coincidence with an enhancement in X-rays and TeV gamma-rays, which could represent its pulsar wind nebula (PWN). We have revealed with recent XMM-Newton observation the X-ray counterpart of the pulsar together with an extended emission thus confirming the suggestion of a PWN. Interestingly, the core of the PWN (r < 1 arcmin) exhibits some knots of X-ray emission separated by 180° suggesting a jet-like structure. The comparison of the absorption column density derived in X-rays from the pulsar and with 12CO and HI observations is used to derive a distance and to discuss a possible association of the pulsar with the VelaJr SNR.

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