132 citations · 3.1k across the 125 of their papers we have counts for
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Magnetic field dependence of bipolar magnetic region tilts on the Sun: Indication of tilt quenching
Bibhuti Kumar Jha, Bidya Binay Karak, Sudip Mandal +1
The tilt of bipolar magnetic region (BMR) is crucial in the Babcock--Leighton process for the generation of the poloidal magnetic field in Sun. Based on the thin flux tube model of…
Infrared spectroscopy of the recent outburst in V1047 Cen (Nova Centauri 2005)
T. R. Geballe, D. P. K. Banerjee, A. Evans +14
Fourteen years after its eruption as a classical nova (CN), V1047 Cen (Nova Cen 2005) began an unusual re-brightening in 2019 April. The amplitude of the brightening suggests that…
Simultaneous longitudinal and transverse oscillations in filament threads after a failed eruption
Rakesh Mazumder, Vaibhav Pant, Manuel Luna +1
Longitudinal and transverse oscillations are frequently observed in the solar prominences and/or filaments. These oscillations are excited by a large scale shock wave, impulsive fl…
Delving into the Historical Ca II K Archive from the Kodaikanal Observatory: the Potential of the Most Recent Digitised Series
Theodosios Chatzistergos, Ilaria Ermolli, Sami K. Solanki +4
Full-disc Ca II K photographic observations of the Sun carry direct information about the evolution of solar-plage regions for more than a century and are therefore a unique datase…
The 2018 eruption and long term evolution of the new high-mass Herbig Ae/Be object Gaia-18azl = VES 263
U. Munari, V. Joshi, D. P. K. Banerjee +9
We have been monitoring, at high cadence, the photometric and spectroscopic evolution of VES 263 following the discovery in 2018 of a brightening labeled as event Gaia-18azl. VES 2…
Study of Sunspot Penumbra to Umbra Area Ratio using Kodaikanal White-light Digitized Data
Bibhuti Kumar Jha, Sudip Mandal, Dipankar Banerjee
We study the long-term behaviour of sunspot penumbra to umbra area ratio by analyzing the recently digitized Kodaikanal white-light data (1923-2011). We implement an automatic umbr…
High-frequency dynamics of active region moss as observed by IRIS
Nancy Narang, Vaibhav Pant, Dipankar Banerjee +1
The high temporal, spatial and spectral resolution of Interface Region Imaging Spectrograph (IRIS) has provided new insights into the understanding of different small-scale process…
Gas phase SiO in the circumstellar environment of the recurrent nova T Coronae Borealis
A. Evans, Ya. V. Pavlenko, D. P. K. Banerjee +9
We report the discovery of the diatomic molecule SiO in the gas phase in the environment of the recurrent nova T Coronae Borealis. While some of the SiO is photospheric, a substant…
Can the long-term hemispheric asymmetry of solar activity result from fluctuations in dynamo parameters?
Alexander Nepomnyashchikh, Sudip Mandal, Dipankar Banerjee +1
The hemispheric asymmetry of sunspot activity observed possesses a regular component varying on a time scale of several solar cycles whose origin and properties are currently debat…
Signature of Extended Solar Cycles as Detected from Ca II K Synoptic Maps of Kodaikanal and Mount Wilson Observatory
Subhamoy Chatterjee, Dipankar Banerjee, Scott W. McIntosh +4
In the recent years there has been a resurgence of the study of Extended Solar Cycles (ESCs) through observational proxies mainly in Extreme Ultraviolet. But most of them are limit…
Association of calcium network bright points with underneath photospheric magnetic patches
Nancy Narang, Dipankar Banerjee, Kalugodu Chandrashekhar +1
Recent dedicated Hinode polar region campaigns revealed the presence of concentrated kilogauss patches of magnetic field in the polar regions of the Sun which are also shown to be…
On the observations of rapid forced reconnection in the solar corona
A. K. Srivastava, Sudheer K. Mishra, P. Jelínek +7
Using multiwavelength imaging observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) on 03 May 2012, we present a novel physical scen…