Mathematics – Logic
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545315w&link_type=abstract
American Astronomical Society, AAS Meeting #215, #453.15; Bulletin of the American Astronomical Society, Vol. 42, p.465
Mathematics
Logic
Scientific paper
Drifting subpulses were first observed in radio pulsars in 1968, and the common model to explain this behavior consists of spark discharges circling the magnetic cap at a rate different from the rotation period of the neutron star (commonly known as the drifting spark model). We are using a new model based on asteroseismological techniques to explain the diverse phenomena seen in individual pulses emitted from radio pulsars. This oscillation model is similar to models for pulsating white dwarf stars and makes specific predictions of pulsar behavior, including correlation between both magnetic poles. This model also allows for the presence of multiple simultaneous frequencies. The focus of our research during the summer was to use the Fast Fourier Transform to conduct subpulse frequency analysis on two pulsars: PSR B0031-007 and PSR B1702-19. PSR B0031-007 has multiple documented subpulse periods and our aim was to determine if they occurred simultaneously. The geometry of PSR B1702-19 allows us to see both magnetic caps and the modulation between the main pulse and interpulse is correlated. We confirmed this correlation and found multiple subpulse periodicities in both the main pulse and interpulse.
Clemens Cathy
Rosen Rachel
Wyman Katherine
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