New Companions for the lonely Crab? VHE emission from young pulsar wind nebulae revealed by H.E.S.S

TL;DR

This paper reports on the detection of very high energy gamma-ray emission from young pulsar wind nebulae G21.5-0.9 and Kes 75 in the Galactic Plane, revealing new insights into their energetic processes.

Contribution

It presents new VHE gamma-ray observations of young pulsar wind nebulae, expanding understanding of their emission mechanisms and characteristics.

Findings

Detection of VHE emission from G21.5-0.9 and Kes 75

Characterization of the gamma-ray sources associated with young pulsars

Discussion of possible emission mechanisms for the observed sources

Abstract

The deeper and more extended survey of the central parts of the Galactic Plane by H.E.S.S. during 2005-2007 has revealed a number of new point-like, as well as, extended sources. Two point-like sources can be associated to two remarkable objects around "Crab-like" young and energetic pulsars in our Galaxy: G21.5-0.9 and Kes 75. The characteristics of each of the sources are presented and possible interpretations are briefly discussed.