Other
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9548a&link_type=abstract
HST Proposal ID #9548
Other
Hst Proposal Id #9548 Ism And Circumstellar
Scientific paper
The research proposed concerns the physics of the interaction of the relativistic winds from rotation powered neutron stars with their surrounding Pulsar-Wind Nebulae {PWN}. The rich set of phenomena observed in the Crab Nebula and beginning to be observed in other PWN provide our best laboratory for the study of the physics of how the energy of a rotating, magnetized, compact central object converts, through a relativistic outflow, into the synchrotron radiation from the relativistic particles in the surrounding magnetized regions, a problem of general astrophysical significance, especially to studies of Gamma Ray Bursts and of AGN jets. The comparison of models of the interaction of the relativistic winds with their surroundings to HST and other observations also provides insight into the physics of the central engine itself. The proposed research focuses on the dynamics of interaction between the wind of the Crab pulsar and its synchrotron nebula. The structure of the relativistic shock wave which terminates the wind will be modeled, and used to construct synthetic, time dependent surface brightness maps in the optical and ultraviolet part of the spectrum which will be quantitatively compared to the recently completed observational campaign, in which a movie of the waves forming in the inner Crab nebula were observed in detail. The particle acceleration characteristic of such shock waves will also be investigated, in order to synthesize multiwavelength movies of the dynamics. From such comparisons of observation to theory, once can glean essential information on the magnetization and composition of such relativistic outflows, as well as information on the basic electrodynamics of the rotating magnetized object that powers the outflow.
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