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A High Signal-to-Noise Ratio Composite Spectrum of Gamma-ray Burst Afterglows
Galaxies high-redshift gamma rays bursts
2010/11/10
We present a composite spectrum of 60 long duration gamma-ray burst (GRB) afterglows with
redshifts in the range 0.35 < z < 6.7 observed with low resolution optical spectra. The composite spectrum co...
GMRT observation towards detecting the Post-reionization 21-cm signal
GMRT the Post-reionization 21-cm signal
2011/1/10
We have analyzed 610 MHz GMRT observations towards detecting the redshifted 21-cm signal from z=1.32. The multi-frequency angular power spectrum C_l(Delta nu) is used to characterize the statistical p...
Dirac neutrino magnetic moment and a possible time evolution of the neutrino signal from a supernova
High Energy Astrophysical Phenomena (astro-ph.HE) High Energy Physics - Phenomenology (hep-ph)
2010/12/23
We analyze the influence of neutrino helicity conversion, $\nu_L \to \nu_R$, on the neutrino flux from a supernova caused by the interaction of the Dirac neutrino magnetic moment with a magnetic field...
HI Fluctuations at Large Redshifts：II – the Signal Expected for theGMRT
Cosmology large scale structures
2009/5/18
For the GMRT, we calculate the expected signal from redshifted
HI emission at two frequency bands centered at 610 and 325MHz.
The study focuses on the visibility-visibility cross-correlations, propo...
THE ROLE OF GEOMAGNETIC FIELD CONFIGURATION ON THE GPS SIGNAL PATHS THROUGH THE MAGNETOSPHERE AND IONOSPHERE
GEOMAGNETIC FIELD CONFIGURATION GPS SIGNAL PATHS MAGNETOSPHERE
2009/4/16
THE ROLE OF GEOMAGNETIC FIELD CONFIGURATION ON THE GPS SIGNAL PATHS THROUGH THE MAGNETOSPHERE AND IONOSPHERE。