CTB80 -- Imagery of a Pulsar Wind Nebula

Details CTB80 -- Imagery of a Pulsar Wind Nebula CTB80 -- Imagery of a Pulsar Wind Nebula

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6858t&link_type=abstract

HST Proposal ID #6858

Physics

Hst Proposal Id #6858 Interstellar Medium

Scientific paper

The emission from the core of the unusual nebula CTB 80 arises behind shocks which are being driven by the pressure of the confined wind from a 40 ms pulsar. These shocks are being driven into material which is strongly magnetized as a result of compression and subsequent cooling behind a radiative shock in an old SNR {perhaps the remnant of the same explosion which gave birth to the pulsar}. The core of CTB 80 is of particular interest for the study of the physics of interstellar shock waves because the shocks are being driven into a thermal plasma by the pressure of a nonthermal plasma, and because a significant fraction of the shock energy goes into compression of the magnetic field. CTB 80 is also the best known object for studying the interaction between a fast pulsar and the medium through which it is travelling. We propose to obtain WFC images of the core of CTB 80 in the light of H alpha, [S II], and [O III], and to search for optical emission from the pulsar in a deep broad band image. At the distance to CTB 80 {1-2 kpc} there are a number of interesting physical scale lengths which are accessible with HST. These images will allow us to investigate collisional excitation of Balmer line emission in the shock itself, the structure of the cooling and recombining flow behind the shock, the interface between the thermal and relativistic plasmas, and the most

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