|Professor of Physics & Astronomy
Physics Department, Cook Physical Sciences
University of Vermont
Burlington, VT 05405
Office hours for Fall 2013 (Schedule):
Wednesday, 1-2 pm; Thursday 3-4 pm
I carry out research in observational radio astronomy with primary
interests in the areas of the pulsar radio-frequency emission problem,
pulsars as probes of the interstellar medium, and feminist studies of
science. I have published a series of papers describing a
phenomenological model of pulsar radio emission, based on the study of
the average and individual-pulse emission properties of pulsars. In
1999, my colleague Avinash Deshpande (of the Raman Research Institute
in Bangalore) and I found a rotating (carousel) subbeam system in
pulsar B0943+10, which has provided remarkable new insights into how
pulsars generate their radio radiation. This work has been extended to
a number of other pulsars, and we have been able to show that many
pulsar "nulls" and some mode changes are also effects of the carouse
system. Now, we are using all these results to interpret
sequences of individual pulses in full polarization, in an effort to
better understand the physics of the stars' emission characteristics.
Together with my collaborators, I regularly make
new pulsar observations using a number of different instruments.
During 2001 and 2002 we conceived and started the Multi-Frequency, Multi-Observatory
Pulsar Polarimetry Project (MFO) using instruments in Holland, Germany,
England, India, Russian and Ukraine. I collaborate with astronomers
in these and other countries and am also interested in science as it is
connected to militarism, the position of the so-called "Third-World",
and women's emancipation.
I earned my B.S. degree in Physics and Mathematics
from Southern Methodist University and my Ph.D. in Astrophysics from the
University of Iowa. At Iowa, she studied under Professor James A. Van Allen.