Sanjay Bhatnagar's Home Page

About me

Who I appear to be	Who I really am
		Sanjay Bhatnagar Scientist, National Radio Astronomy Observatory, Socorro, New Mexico, NM - 87801, USA	Phone: +1 (575) 835 7376 (W) E-mail: sbhatnag AT nrao DOT edu

• EVLA Early Science Press release: Expanded VLA Flexing New Scientific Muscle
• I am involved in research and development for new imaging and calibration algorithms for EVLA and ALMA. I am also involved in the scientific software part of the CASA project.
• The latest version of the document describing the Data Selection Syntax in CASA is here [PDF format].
• My involvement in Radio Astronomy started at the National Center for Radio Astrophysics, Pune, India.  I was involved, from the beginning, in the building of the Giant Meterwave Radio Telescope (GMRT),
• I now work at the Array Operation Center (AOC), Socorro, New Mexico, USA of the National Radio Astronomy Observatory (NRAO).


• I got my PhD degree from TIFR/University of Pune, India. My thesis (htlatex build) was the first thesis which used the GMRT for imaging at low frequencies. This involved debugging the instrument, developing offline and online software, debugging the correlater, etc. I ultimately used the GMRT in the imaging mode to study Galactic SNRs and ISM at low frequencies. Sensitive high resolution imaging at low frequencies is crucial for the study of SNRs which are brighter and less confused with thermal emission at low frequencies (SNR Paper-I, SNR Paper-II).
  
  We also developed the LeakyCal algorithm to measure antenna based polarization leakages using only the co-polar visibilities. I quite like the interpretation of the leakages on the Poincare Sphere and the connection to Pancharatnam Phase of optics that I learned from R.Nityananda.


• I am a member and the co-chair of the SKA Calibration and Imaging Task Force. There have been four meetings of this task force so far:

  CALIM05, hosted by ASTRON at Dwingeloo, The Netherlands, 2005

  CALIM06, hosted by the SKA SA and South African Astronomical Observatory at Cape Town, South Africa, 2006

  CALIM08, hosted by CSIRO and UWA at Perth, Australia, 2008

  CALIM09, hosted by NRAO, at Socorro, New Mexico (USA), 2009

  CALIM2010, hosted by ASTRON at Dwingeloo, The Netherlands, 2010

Research interests	Research work	Publications/Talks	Software	Misc
Astronomical techniques	Work in progress	Publications	Fussy	Picture album
Astronomy/astrophysics	Recent	Talks/presentations	User interface library	Others
Scientific computing	GMRT related work		Slideshow/Photo album	NRAO ETK