Somnath Bharadwaj

	S Bharadwaj Ph.D.(IISc Bangalore) Professor,  Physics & Meteorology
	S Bharadwaj joined the Institute in 1998

Contact Addresses

Residence	C1-132, IIT Campus, Kharagpur 721302
Phone (office)	+91 - 3222 - 283806
Phone (residence)	+91 - 3222 - 283807 (IIT Phone)
email	somnath @ phy.iitkgp.ernet.in
More Information	http://www.cts.iitkgp.ernet.in/~somnath/

Research Areas

• Astrophysics
• Cosmology

Current Sponsored Projects

• Project Title : Measuring the HI power-spectrum with the GMRT
  Principal Investigator : Somnath Bharadwaj
  Co-Principal-Investigators : Jayaram N. Chengalur (TIFR)
  Sponsor : BRNS, DAE

Text and Reference Books

• Physics I Oscillations and Waves by Bharadwaj, Somnath; Khastgir, Pratik, S. (Ctgnus, 2009)

Member, Editorial Board

• Member Editorial Board : Journal of Astrophysics and Astronomy

Publications: 2009 - 2010

• Estimation of cosmological parameters from neutral hydrogen observations of the post-reionization epoch by Bharadwaj, Somnath; Sethi, Shiv K.; Saini, Tarun Deep Physical Review D, 79, 083538 (2009)
• Gravitational-wave detection using redshifted 21-cm observations by Bharadwaj, Somnath; Guha Sarkar, Tapomoy Physical Review D, 79, 124003 (2009)
• The scaleheight of NGC 1058 measured from its HI power spectrum by Dutta, Prasun; Begum, Ayesha; Bharadwaj, Somnath; Chengalur, Jayaram N. Monthly Notices of the Royal Astronomical Society, 397, L60 (2009)
• A study of interstellar medium of dwarf galaxies using HI power spectrum analysis by Dutta, Prasun; Begum, Ayesha; Bharadwaj, Somnath; Chengalur, Jayaram N. Monthly Notices of the Royal Astronomical Society, 398, 887 (2009)
• The scale of homogeneity of the galaxy distribution in SDSS DR6 by Sarkar, Prakash; Yadav, Jaswant; Pandey, Biswajit; Bharadwaj, Somnath Monthly Notices of the Royal Astronomical Society, 399, L128 (2009)
• The optimal redshift for detecting ionized bubbles in HI 21-cm maps by Datta, Kanan K.; Bharadwaj, Somnath; Choudhury, T. Roy Monthly Notices of the Royal Astronomical Society, 399, L132 (2009)
• The CMBR ISW and HI 21 cm cross-correlation angular power spectrum by Guha Sarkar, Tapomoy; Datta, Kanan K.; Bharadwaj, Somnath Journal of Cosmology and Astroparticle Physics, 8, 19 (2009)
• Galaxy Surveys by Bharadwaj, Somnath Current Science, 97, 821 (2009)

Publications: 2008 - 2009

• Exploring star formation using the filaments in the Sloan Digital Sky Survey Data Release Five by Pandey, Biswajit; Bharadwaj, Somnath Monthly Notices of the Royal Astronomical Society, 387, 767 (2008)
• Simulating the impact of HI fluctuations on matched filter search for ionized bubbles in redshifted 21-cm maps by Datta, Kanan K.; Majumdar, Suman; Bharadwaj, Somnath; Choudhury, T. Roy Monthly Notices of the Royal Astronomical Society, 291, 1900 (2008)
• Magnetohydrodynamic turbulence in supernova remnants by Roy, Nirupam; Bharadwaj, Somnath; Dutta, Prasun; Chengalur, Jayaram N. Monthly Notices of the Royal Astronomical Society, 393L, 26 (2009)
• The Local Dimension: a method to quantify the Cosmic Web by Sarkar, Prakash; Bharadwaj, Somnath Monthly Notices of the Royal Astronomical Society, 394L, 66 (2009)

Publications: 2007 - 2008

• Detecting ionized bubbles in redshifted 21-cm maps by Datta, Kanan K.; Bharadwaj, Somnath; Choudhury, T. Roy, Monthly Notices of the Royal Astronomical Society, 382, 809 (2007)
• HI power spectrum of the spiral galaxy NGC628 by Dutta, Prasun; Begum, Ayesha; Bharadwaj, Somnath; Chengalur, Jayaram N., Monthly Notices of the Royal Astronomical Society, 384, L34 (2008)
• Foregrounds for redshifted 21 cm studies of reionization: GMRT 153 MHz observations by Ali, Sk. Saiyad; Bharadwaj, Somnath; Chengalur, Jayaram N., Monthly Notices of the Royal Astronomical Society, 385, 2166 (2008)

Publications: 2006 - 2007

• Power spectrum of HI intensity fluctuations in DDO 210 by Begum, Ayesha; Chengalur, Jayaram N.; Bhardwaj, Somnath , Monthly Notices of the Royal Astronomical Society, 372, L33 (2006)
• The luminosity, colour and morphology dependence of galaxy filaments in the Sloan Digital Sky Survey Data Release Four by Pandey, Biswajit; Bharadwaj, Somnath, Monthly Notices of the Royal Astronomical Society, 372, 827 (2006)
• The luminosity-bias relation from filaments in the Sloan Digital Sky Survey Data Release Four by Pandey, Biswajit; Bharadwaj, Somnath, Monthly Notices of the Royal Astronomical Society, 377, L15 (2007)
• The multifrequency angular power spectrum of the epoch of reionization 21-cm signal by Datta, Kanan K.; Choudhury, T. Roy; Bharadwaj, Somnath, Monthly Notices of the Royal Astronomical Society, 378, 119 (2007)

Publications: 2005 - 2006

• Testing homogeneity on large scales in the Sloan Digital Sky Survey Data Release One by Yadav, Jaswant; Bharadwaj, Somnath; Pandey, Biswajit; Seshadri, T. R., Monthly Notices of the Royal Astronomical Society, 364 601 (2005)
• What will anisotropies in the clustering pattern in redshifted 21-cm maps tell us? by Ali, Sk. Saiyad; Bharadwaj, Somnath; Pandey, Biswajit, Monthly Notices of the Royal Astronomical Society, 363 251 (2005)
• Probing the bispectrum at high redshifts using 21-cm HI observations by Saiyad Ali, SK.; Bharadwaj, Somnath; Pandey, Sanjay K., Monthly Notices of the Royal Astronomical Society, 366 213 (2006)

Publications: 2004 - 2005

• Probing non-Gaussian features in the HI distribution at the epoch of reionization by S. Bharadwaj and S.K.Pandey, Monthly Notices of the Royal Astronomical Society, 358 (2005) 968
• Modeling non-linear effects in the redshift space two-point correlation function and its implications for the pairwise velocity dispersion by B. Pandey and S. Bharadwaj, 2005, Monthly Notices of the Royal Astronomical Society, 358, 939 B., Monthly Notices of the Royal Astronomical Society, 358 (2005) 939
• A two-dimensional analysis of percolation and filamentarity in the Sloan Digital Sky Survey Data Release One by B. Pandey and S. Bharadwaj, Monthly Notices of the Royal Astronomical Society, 357 (2005) 1068
• On using visibility correlations to probe the HI distribution from the dark ages to the present epoch - I. Formalism and the expected signal by S. Bharadwaj and Sk.S. Ali, Monthly Notices of the Royal Astronomical Society,, 356 (2005) 1519
• Using the Filaments in the Las Campanas Redshift Survey to Test the Lambda CDM Model by S. Bharafwaj and B. Pandey, The Astrophysical Journal, 615 (2005) 1
• Can extra dimensional effects replace dark matter? by S. Pal, S. Bharadwaj and S. Kar, Physics Letters B, 609 (2005) 194
• Can the rotation of the dark matter halo of our galaxy be detected through its effect on the cosmic microwave background polarization? by Partha Nag, Somnath Bharadwaj and Sayan Kar, Journal of Cosmology and Astroparticle Physics, 07 (2005) 006

Some Earlier Publications

• HI Fluctuations at Large Red shifts: II - the Signal Expected for the GMRT by Bharadwaj Somnath and Pandey, Sanjay K., Journal of Astrophysics and Astronomy, 24 (2003) 23
• HI Fluctuations at Large Redshifts : I-Visibility correlation by S. Bharadwaj, S. K. Sethi, J. Astrophysics & Aastronomy, 22 (2001) 293
• Nonlinear redshift distortions: The two-point correlation function by S. Bharadwaj, ; Monthly Notices of the Royal Astronomical Soc., 327 (2001) 577
• Using Gravitational Lensing to study HI clouds at high z by T. D. Saini, S. Bharadwaj & S. K. Sethi, Astrophysical Journal, 557 (2001) 421