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Night sky at the Indian Astronomical Observatory during 2000-2008
C. S. Stalin, M. Hegde, D. K. Sahu +4
We present an analysis of the optical night sky brightness and extinction coefficient measurements in UBVRI at the Indian Astronomical Observatory (IAO), Hanle, during the period 2…
The broad line type Ic supernova SN 2007ru: Adding to the diversity of type Ic supernovae
D. K. Sahu, Masaomi Tanaka, G. C. Anupama +2
Photometric and spectral evolution of the Type Ic supernova SN 2007ru until around 210 days after maximum are presented. The spectra show broad spectral features due to very high e…
Photometric and Spectroscopic study of a highly reddened type Ia supernova SN 2003hx in NGC 2076
Kuntal Misra, D. K. Sahu, G. C. Anupama +1
We present CCD photometry and optical spectra of the type Ia supernova SN 2003hx which appeared in the galaxy NGC 2076, obtained till 146 days after the epoch of …
The evolution of the peculiar Type Ia supernova SN 2005hk over 400 days
D. K. Sahu, Masaomi Tanaka, G. C. Anupama +6
photometry and medium resolution optical spectroscopy of peculiar Type Ia supernova SN 2005hk are presented and analysed, covering the pre-maximum phase to around 400 days…
ESC observations of SN 2005cf. I. Photometric Evolution of a Normal Type Ia Supernova
A. Pastorello, S. Taubenberger, N. Elias-Rosa +20
We present early-time optical and near-infrared photometry of supernova (SN) 2005cf. The observations, spanning a period from about 12 days before to 3 months after maximum, have b…
Optical observations of GRB 060124 afterglow: A case for an injection break
Kuntal Misra, D. Bhattacharya, D. K. Sahu +5
We present broad band optical afterglow observations of a long duration GRB 060124 using the 1.04-m Sampurnanand Telescope at ARIES, Nainital and the 2.01-m HCT at IAO, Hanle, incl…