First Mid-Infrared Detection of A Bow Shock Structure Around A Pulsar

Details First Mid-Infrared Detection of A Bow Shock Structure Around A Pulsar First Mid-Infrared Detection of A Bow Shock Structure Around A Pulsar

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50756w&link_type=abstract

Spitzer Proposal ID #50756

Physics

Scientific paper

In our on-going Spitzer IRAC survey of 7 relatively young pulsars, a bow shock structure has been detected at 8.0 microns around pulsar J1549-4848. The 8.0 micron emission is likely thermal, arising from the shocked dust in the interstellar medium (ISM). This detection represents a type of pulsar wind interaction with the ISM that has never before been seen, suggesting a new window for studying pulsars and their interactions with the ISM. In order to understand the detected shock, we propose Spitzer MIPS imaging and IRS spectroscopic observations of the shock region. We request MIPS 24 and 70 micron imaging of the bow shock to determine the temperature and mass of the shocked dust. We also request a 7.4-14 micron spectrum of the shock region, seeking to study the shocked ISM by searching for certain line features. The continuum spectrum will provide flux measurements for determining the dust temperature. These mid-infrared observations can only be made with Spitzer's unique capabilities.

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