Homepage of Xiaohui Sun
Dr. Xiaohui Sun
I obtained my Ph.D. degree in 2006 at National Astronomical Observatories, CAS (NAOC),
and spent one year at Max-Planck Institute for Radioastronomy as a postdoc. In 2007 became a
formal member of NAOC.
A detailed CV can be found here .
Galactic interstellar medium. Our Galaxy hosts both large scale regular
magnetic field and small scale turbulent field. The relativistic electrons spiralling the
field generate synchrotron emission which is highly polarized. This significantly
contaminates the observations of cosmic microwave background emission. The magnetized
ionized gas introduces Faraday effect to polarization observations. This on one hand can
be used to infer the magnetic field such as for pulsars, on the other hand smears out the
polarized emission to a large extent depending on the observation wavelength. The propagation
of cosmic ray particles is also influenced by the Galactic magnetic field.
What is the configuration of the large-scale field? What is the fluctuation properties
of the small scale field? Is it Kolmogorov-like? How it is compared to the regular field?
How the field is spatially distributed? What is the scale height of the thermal gas? Is it
coupled to the field? The consensus is yet to be reached for the above questions. I endeavor
to embark on some aspects.
Radio continuum survey. The continuum survey is essential to investigate the
Galactic interstellar medium. The Sino-German 6 cm
polarization of the Galactic plane combining the international effort is being made.
I have participated in the project since 2002. Now the survey will be finished soon. Fruitful
results have come out from the survey.
When I'm not working
I like to play billiards. I like to watch soccer and basketball matches although I'm
really bad at playing them.
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