132 citations · 3.1k across the 125 of their papers we have counts for
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Digitized archive of the Kodaikanal images: Representative results of solar cycle variation from sunspot area determination
B. Ravindra, T. G. Priya, K. Amareswari +3
Photographic images are valuable data resources for studying long term changes in the solar magnetic field and its influence on the Earth's climate and weather. We digitized more t…
Variation of Emission Line Width in Mid- and High-Latitude Corona
S. Krishna Prasad, Jagdev Singh, D. Banerjee
Spectroscopic studies of the solar corona, using the high spatial and spectral resolution 25-cm coronagraph at the Norikura observatory for equatorial off-limb observations, indica…
Interferometric studies of novae in the infrared
Olivier Chesneau, D. P. K. Banerjee
The Interferometric studies of novae in the optical and near-infrared is a nascent but fast emerging field which has begun to provide new and invaluable insights into the nova phen…
Spectroscopic Observations of Propagating Disturbances in a Polar Coronal Hole: Evidence of Slow Magneto-acoustic Waves
G. R. Gupta, L. Teriaca, E. Marsch +2
We focus on detecting and studying quasi-periodic propagating features that have been interpreted both in terms of slow magneto-acoustic waves and of high speed upflows. We analyze…
Oscillations in active region fan loops: Observations from EIS/{\it Hinode} and AIA/SDO
S. Krishna Prasad, D. Banerjee, Jagdev Singh
Active region fan loops in AR 11076 were studied, in search of oscillations, using high cadence spectroscopic observations from EIS on board Hinode combined with imaging sequences…
The expanding dusty bipolar nebula around the nova V1280 Sco
Olivier Chesneau, E. Lagadec, M. Otulakowska-Hypka +15
V1280 Sco is one of the slowest dust-forming nova ever historically observed. We performed multi-epoch high-spatial resolution observations of the circumstellar dusty environment o…
V496 Scuti: An Fe II nova with dust shell accompanied by CO emission
Ashish Raj, N. M. Ashok, D. P. K. Banerjee +3
We present near-infrared and optical observations of the nova V496 Scuti 2009 covering various phases - pre-maximum, early decline and nebular - during the first 10 months of its d…
The A-X infrared bands of Aluminum Oxide in stars: search and new detections
D. P. K. Banerjee, W. P. Varricatt, Blesson Mathew +2
We describe a search for the A-X infrared bands of AlO with a view to better understand the characteristics of this radical. These bands are infrequently encountered in astronomica…
Infrared observations of the recurrent nova T Pyxidis: ancient dust basks in the warm glow of the 2011 outburst
A. Evans, R. D. Gehrz, L. A. Helton +15
We present Spitzer Space Telescope and Herschel Space Observatory infrared observations of the recurrent nova T Pyx during its 2011 eruption, complemented by ground-base optical-in…
Infrared studies of the Be star X Per
Blesson Mathew, D. P. K. Banerjee, Sachindra Naik +1
Photometric and spectroscopic results are presented for the Be star X Per/HD 24534 from near-infrared monitoring in 2010-2011. The star is one of a sample of selected Be/X-ray bina…
Studies of a possible new Herbig Ae/Be star in the open cluster NGC 7380
Blesson Mathew, D. P. K. Banerjee, N. M. Ashok +3
We present a study of the star 2MASS J22472238+5801214 with the aim of identifying its true nature which has hitherto been uncertain. This object, which is a member of the young cl…