Statistics – Applications
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.2005l&link_type=abstract
American Astronomical Society, HEAD meeting #12, #20.05
Statistics
Applications
Scientific paper
The current state of the art in the modeling of pulsar magnetospheres invokes either the vacuum or force-free limits for the magnetospheric plasma. Neither of these limits provides an entirely satisfactory mechanism for producing the high energy emission from gamma ray pulsars, and in order to better understand this emission we consider hybrid resistive models for the magnetosphere. We formulate Ohm's Law in the minimal velocity fluid frame and construct a family of resistive solutions that smoothly bridges the gap between the vacuum and the force-free magnetosphere solutions. The spindown luminosity, open field line potential drop, and the fraction of open field lines all transition between the vacuum and force-free values as the plasma conductivity varies from zero to infinity. We find that the spindown luminosity is related to the open field line potential drop by a simple linear fit for fixed inclination angle. Our resistive solutions can be used to explain a number of interesting observed pulsar features, and we discuss applications to sub-pulse drift phenomena, braking indices, and intermittent pulsars. We also present the application of our resistive magnetosphere solutions to the generation of gamma ray light curves.
Li Jason G.
Spitkovsky Anatoly
Tchekhovskoy Alexander
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