5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Aryabhatta Research Institute of Observational SciencesIN239 papers
- Tata Institute of Fundamental ResearchIN175 papers
- Centre National de la Recherche ScientifiqueFR133 papers
- Pondicherry UniversityIN120 papers
- Indian Institute of Science BangaloreIN119 papers
- Inter-University Centre for Astronomy and AstrophysicsIN114 papers
- Christ UniversityIN108 papers
- National Centre for Radio AstrophysicsIN98 papers
- Physical Research LaboratoryIN92 papers
- Chinese Academy of SciencesCN77 papers
- Instituto de Astrofísica de CanariasES77 papers
- National Astronomical Observatory of JapanJP77 papers
84 papers · 1 filter
Studying the radio continuum from nuclear activity and star formation in Giant Low Surface Brightness Galaxies
Alka Mishra, N. G. Kantharia, M. Das +2
We present a multifrequency radio continuum study of seven giant low surface brightness (GLSB) galaxies using the Giant Metrewave Radio Telescope (GMRT). GLSB galaxies are opticall…
Mid-Infrared Variations of R Coronae Borealis Stars
N. Kameswara Rao, David L. Lambert
Mid-infrared photometry of R Coronae Borealis stars obtained from various satellites from IRAS to WISE has been utilized in studying the variations of the circumstellar dust's cont…
A Raspberry Pi-Based Attitude Sensor
A. G. Sreejith, Joice Mathew, Mayuresh Sarpotdar +4
We have developed a lightweight low-cost attitude sensor, based on a Raspberry Pi, built with readily available commercial components. It can be used in experiments where weight an…
Chemical analysis of CH stars - II: atmospheric parameters and elemental abundances
Drisya Karinkuzhi, Aruna Goswami
We present detailed chemical analyses for a sample of twelve stars selected from the CH star catalogue of Bartkevicius (1996). The sample includes two confirmed binaries, four obje…
A search for diffuse bands in fullerene planetary nebulae: evidence of diffuse circumstellar bands
J. J. Diaz-Luis, D. A. Garcia-Hernandez, N. Kameswara Rao +2
Large fullerenes and fullerene-based molecules have been proposed as carriers of diffuse interstellar bands (DIBs). The recent detection of the most common fullerenes (C60 and C70)…
Constraint on noncommutative spacetime from PLANCK data
Joby P. K., Pravabati Chingangbam, Subinoy Das
We constrain the energy scale of noncommutativity of spacetime using CMB data from PLANCK. We find that PLANCK data puts the lower bound on the noncommutativity energy scale to abo…
Primordial Black Holes as Heat Sources for Living Systems with Longest Possible Lifetimes
C Sivaram, Kenath Arun, Kiren O
Just forty years ago, Hawking wrote his famous paper on primordial black holes (PBH). There have been since innumerable discussions on the consequences of the existence of such exo…
Small scale clustering of late forming dark matter
Shankar Agarwal, Pier Stefano Corasaniti, Subinoy Das +1
We perform a study of the nonlinear clustering of matter in the late-forming dark matter (LFDM) scenario in which dark matter results from the transition of a nonminimally coupled…
VLBI Imaging of the Double Peaked Emission Line Seyfert KISSR1494
Preeti Kharb, Mousumi Das, Zsolt Paragi +2
We present here the results from dual-frequency phase-referenced VLBI observations of the Seyfert galaxy KISSR1494, which exhibits double peaked emission lines in its SDSS spectrum…
Primordial non-Gaussian signatures in CMB polarization
Vidhya Ganesan, Pravabati Chingangbam, K. P. Yogendran +1
We study the signatures of local type primordial non-Gaussianity, parametrized by $\fnl$, of scalar perturbations in CMB polarization using the probability distribution functions,…
Molecular Gas and Star Formation in Voids
M. Das, T. Saito, D. Iono +2
We present the detection of molecular gas using CO(1-0) line emission and follow up Halpha imaging observations of galaxies located in nearby voids. The CO(1-0) observations were d…
Understanding Jets from Sources Straddling the Fanaroff-Riley Divide
Preeti Kharb, Ethan Stanley, Matthew Lister +3
Results from Chandra-HST-VLA observations of 13 hybrid sources are presented. Data from ten sources in the literature are analysed along with new data from three hybrid blazars bel…
An embedded active nucleus in the OH megamaser galaxy IRAS16399-0937
Dinalva A. Sales, A. Robinson, D. J. Axon +7
We present a multiwavelength study of the OH Megamaser galaxy (OHMG) IRAS16399-0937, based on new HST/ACS F814W and H+[NII] images and archive data from HST, 2MASS, Spitzer, Her…
Magnetic field structure around cores with very low luminosity objects
A. Soam, G. Maheswar, Chang Won Lee +4
[Abridged] We carried out optical polarimetry of five dense cores, (IRAM 04191, L1521F, L328, L673-7, and L1014) which are found to harbour VeLLO. This study was conducted mainly t…
H I Kinematics of the Large Magellanic Cloud revisited : Evidence of possible infall and outflow
G. Indu, Annapurni Subramaniam
The neutral atomic Hydrogen (H I) kinematics of the Large Magellanic Cloud (LMC) is revisited in light of two new proper motion estimates. We analysed the intensity weighted H I ve…
Deep Washington photometry of inconspicuous star cluster candidates in the Large Magellanic Cloud
Samyaday Choudhury, Annapurni Subramaniam, Andrés E. Piatti
We present deep Washington photometry of 45 poorly populated star cluster candidates in the Large Magellanic Cloud (LMC). We have performed a systematic study to estimate the param…
The VMC Survey. XIII. Type II Cepheids in the Large Magellanic Cloud
V. Ripepi, M. I. Moretti, M. Marconi +9
The VISTA survey of the Magellanic Clouds System (VMC) is collecting deep --band time--series photometry of the pulsating variable stars hosted in the system formed b…
Disk of the Small Magellanic Cloud as traced by Cepheids
Smitha Subramanian, Annapurni Subramaniam
The structure and evolution of the disk of the Small Magellanic Cloud (SMC) are traced by studying the Cepheids. We aim to estimate the orientation measurements of the disk, such a…
A Relativistic Many-Body Analysis of the Electric Dipole Moment of Rn
B. K. Sahoo, Yashpal Singh, B. P. Das
We report the results of our {\it ab initio} relativistic many-body calculations of the electric dipole moment (EDM) arising from the electron-nucleus tensor-pseudotensor (T-…
Mercury Monohalides: Suitability for Electron Electric Dipole Moment Searches
V. S. Prasannaa, A. C. Vutha, M. Abe +1
Heavy polar diatomic molecules are the primary tools for searching for the T-violating permanent electric dipole moment of the electron (eEDM). Valence electrons in some molecules…
Observations of Photospheric Vortical Motions During the Early Stage of Filament Eruption
Sajal Kumar Dhara, B. Ravindra, Ravinder Kumar Banyal
Solar filaments/prominences exhibit rotational motion during different phases of their evolution from their formation to eruption. We have observed the rotational/vortical motion i…
Prospect for UV observations from the Moon
Margarita Safonova, Joice Mathew, Rekhesh Mohan +6
Space astronomy in the last 40 years has largely been done from spacecraft in low Earth orbit (LEO) for which the technology is proven and delivery mechanisms are readily available…
Permanent Electric Dipole Moment of Strontium Monofluoride as a Test of the Accuracy of a Relativistic Coupled Cluster Method
V S Prasannaa, M Abe, B P Das
The permanent electric dipole moment of the X 2 Σ+ electronic ground state of the strontium monofluoride molecule is calculated using a relativistic coupled cluster method. Our res…
Kiloparsec-scale radio emission in Seyfert and LINER galaxies
Veeresh Singh, C. H. Ishwara-Chandra, Yogesh Wadadekar +2
Seyfert and LINER galaxies are known to exhibit compact radio emission on 10 to 100 parsec scales, but larger Kiloparsec-Scale Radio structures (KSRs) often remain undetecte…