Multi-wavelength study of a young open cluster NGC 7419 (2008)
Joshi, Himali, Kumar, Brijesh, Singh, K. P., Sagar, Ram, Sharma, Saurabh, Pandey, J. C.
Using UBVRI Halpha CCD photometric observations and the archival NIR and X-ray data, we have carried out a multi-wavelength study of a young star cluster NGC 7419. An age of 22.5+/-3.0 Myr and a...
A study of X-ray flares - I. Active late-type dwarfs (2008)
We present temporal and spectral characteristics of X-ray flares observed from six late-type G-K active dwarfs (V368 Cep, XI Boo, IM Vir, V471 Tau, CC Eri and EP Eri) using data from observations...
Medhi, Biman J., G, Maheswar., Pandey, J. C., Kumar, T. S., Sagar, Ram
We present new B, V and R linear polarimetric observations for 61 stars towards the region of the young open cluster NGC 654. In this study we found evidence for the presence of at least two layers...
Broad Band Optical Polarimetric Study of IC 1805 (2007)
Medhi, Biman J., G., Maheswar, K., Brijesh, Pandey, J. C., Kumar, T. S., Sagar, Ram
We present the BVR broad band polarimetric observations of 51 stars belonging to the young open cluster IC 1805. Along with the photometric data from the literature we have modeled and subtracted the...
Unravelling the nature of HD 81032 - a new RS CVn Binary (2005)
Pandey, J. C., Singh, K. P., Drake, S. A., Sagar, R.
BVR photometric and quasi-simultaneous optical spectroscopic observations of the star HD 81032 have been carried out during the years 2000 - 2004. A photometric period of $18.802 \pm 0.07$ d has been...
Pandey, J. C., Singh, K. P., Drake, S. A., Sagar, R.
We present a multiwavelength study of three chromospherically active stars, namely FR Cnc (= BD +16\degr 1753), HD 95559 and LO Peg (=BD +22\degr 4409), including newly obtained optical photometry,...
SS 433: Results of a Recent Multi-wavelength Campaign (2005)
Chakrabarti, Sandip K., Anandarao, B. G., Pal, S., Mondal, Soumen, Nandi, A., Bhattacharyya, A., ...
We conducted a multi-wavelength campaign in September-October, 2002, to observe SS 433. We used 45 meter sized 30 dishes of Giant Meter Radio Telescope (GMRT) for radio observation, 1.2 meter...
ARIES imaging polarimeter (2004)
Rautela, B. S, Joshi, G. C, Pandey, J. C
An Imaging Polarimeter has been fabricated for use with liquid- N2 cooled CCD camera and is designed to suit 104-cm Sampurnanand telescope with an f/13 focus at Aryabhatta Research Institute of...
A flattening in the optical light curve of SN 2002ap (2003)
Pandey, S.B., Anupama, G.C., Sagar, R., Bhattacharya, D., Sahu, D.K., Pandey, J.C.
Restricted Access. An open access version is available at NASA ADS (alternative location).
Optical observations of the bright long duration peculiar GRB 021004 afterglow (2003)
Pandey, S.B., Sahu, D.K., Resmi, L., Sagar, R., Anupama, G.C., Bhattacharya, D., ...
The CCD magnitudes in Johnson $B,V$ and Cousins $R$ and $I$ photometric passbands are determined for the bright long duration GRB 021004 afterglow from 2002 October 4 to 16 starting $\sim$ 3 hours...
A Flattening in the Optical Light Curve of SN 2002ap (2003)
Pandey, S. B, Anupama, G. C, Sagar, R, Bhattacharya, D, Sahu, D. K, Pandey, J. C
FR Cnc - A Young Spotted Star (2003)
Optical photometric and spectroscopic studies of the star FR Cnc = BD + 16 1753 have been carried out during the years 2001 - 2002. The star is photometrically variable with a mean period of 0d.8271...
Optical observations of the bright long duration peculiar GRB 021004 afterglow (2002)
Pandey, S. B., Sahu, D. K., Resmi, L., Sagar, R., Anupama, G. C., Bhattacharya, D., ...
The CCD magnitudes in Johnson $B,V$ and Cousins $R$ and $I$ photometric passbands are determined for the bright long duration GRB 021004 afterglow from 2002 October 4 to 16 starting $\sim$ 3 hours...
A flattening in the Optical Light Curve of SN 2002ap (2002)
Pandey, S. B., Anupama, G. C., Sagar, R., Bhattacharya, D., Sahu, D. K., Pandey, J. C.
We present the $UBVR_cI_c$ broad band optical photometry of the Type Ic supernova SN 2002ap obtained during 2002 February 06 -- March 23 in the early decline phases and also later on 2002 15 August....