IIAP Publications: Recent submissions

  • The VMC survey – XLI. Stellar proper motions within the small magellanic cloud 
    Niederhofer, Florian; Cioni, Maria-Rosa L; Rubele, Stefano; Schmidt, Thomas; Diaz, Jonathan D; Matijevic, Gal; Bekki, Kenji; Bell, C. P. M; de Grijs, Richard; Youssoufi, Dalal El; Ivanov, Valentin D; Oliveira, Joana M; Ripepi, Vincenzo; Subramanian, S; Sun, Ning-Chen; van Loon, Jacco Th (Oxford University Press on behalf of the Royal Astronomical Society, 2021-04)
    We used data from the near-infrared Visible and Infrared Telescope for Astronomy (VISTA) survey of the Magellanic Cloud system (VMC) to measure proper motions (PMs) of stars within the Small Magellanic Cloud (SMC). The ...
  • Estimation of the size and structure of the broad line region using Bayesian approach 
    Mandal, A. K; Rakshit, S; Stalin, C. S; Petrov, R. G; Mathew, B; Sagar, R (Oxford University Press on behalf of the Royal Astronomical Society, 2021-04)
    Understanding the geometry and kinematics of the broad line region (BLR) of active galactic nuclei (AGN) is important to estimate black hole masses in AGN and study the accretion process. The technique of reverberation ...
  • New results on the direct observations of thermal radio emission from a solar coronal mass ejection 
    Ramesh, R; Anshu Kumari; Kathiravan, C; Ketaki, D; Wang, T. J (American Geophysical Union, 2021-04-28)
    We report observations of thermal emission from the frontal structure of a coronal mass ejection (CME) using data obtained with the Gauribidanur RAdioheliograPH simultaneously at 80 and 53 MHz on May 1, 2016. The CME was ...
  • A near-infrared photometer for the 1-m telescope of Vainu Bappu Observatory 
    Mishra, Anwesh Kumar; Kamath, U. S (Indian Academy of Sciences, 2021-04)
    A near-infrared photometer based on an InGaAs PIN photodiode and the filter set recommended by Infrared Working Group (IRWG) have been designed and built. It is mounted on the 1-m Carl–Zeiss telescope at the Vainu Bappu ...
  • SN 2020ank: a bright and fast-evolving H-deficient superluminous supernova 
    Amit Kumar; Brajesh Kumar; Pandey, S. B; Sahu, D. K; Singh, A; Anupama, G. C; Aryan, Amar; Gupta, Rahul; Anirban Dutta; Misra, K (Oxford University Press on behalf of the Royal Astronomical Society, 2021-04)
    We investigate the observational properties of a hydrogen-deficient superluminous supernova (SLSN) SN 2020ank (at z = 0.2485), with the help of early phase observations carried out between –21 and +52 d since g-band maximum. ...
  • Coherent Curvature Radio Emission and Polarization from Pulsars 
    Gangadhara, R. T; Han, J. L; Wang, P. F (IOP Publishing, 2021-04-20)
    We have developed a collective plasma radio emission model for the radio pulsars based on the implications of the tangent model. The secondary pair (electron–positron) plasma particles get arranged into a phased array like ...
  • Effects of thermal emission on Chandrasekhar's semi-infinite diffuse reflection problem 
    Sengupta, Soumya (IOP Publishing, 2021-04-20)
    The analytical results of Chandrasekhar's semi-infinite diffuse reflection problem is crucial in the context of the stellar or planetary atmosphere. However, the atmospheric emission effect was not taken into account in ...
  • Relation between Quiescence and Outbursting Properties of GX 339-4 
    Bhowmic, Riya; Debnath, Dipak; Chatterjee, Kaushik; Nagarkoti, Shreeram; Chakrabarti, S. K; Sarkar, Ritabrata; Chatterjee, Debjit; Jana, Arghajit (IOP Publishing, 2021-04-01)
    Galactic black hole candidate GX 339-4 underwent several outbursting phases in the past two and a half decades at irregular intervals of 2–3 years. The nature of these outbursts in terms of the duration, number of peaks, ...
  • Gas infalling motions in the envelopes of very low luminosity objects 
    Kim, Mi-Ryang; Lee, Chang Won; Maheswar, G; Myers, Philip C; Kim, Gwanjeong (IOP Publishing, 2021-04-01)
    We present the results of a single-dish survey toward 95 very low luminosity objects (VeLLOs) in optically thick (HCN 1−0) and thin (N2H+ 1−0) lines performed for the purpose of understanding the physical processes ...
  • A Fock space coupled cluster based probing of the single- and double-ionization profiles for the poly-cyclic aromatic hydrocarbons and conjugated polyenes 
    Chaudhuri, R. K; Chattopadhyay, Sudip (American institute of Physics, 2021-03-21)
    Sequential formation of a poly-cyclic aromatic hydrocarbon (PAH) dication in the H I regions of the interstellar medium (ISM) is proposed to be a function of internal energy of the doubly ionized PAHs, which, in turn, is ...
  • Spectroscopic Investigation of Nebular Gas (SING): general objectives and preliminary optical layout 
    Sachkov, M. E; Chandra, B; Murthy, J; Shmagin, V. E; Prabha, Sh; Prakash, A; Nair, B. G; Safonova, M. V; Rai, R; Mohan, R (Institute of Astronomy of the Russian Academy of Sciences, 2020-12)
    The ultraviolet spectral subdiapasons, both near UV (180─300 nm) and far UV (115─180 nm), are highly requested by astrophysicists. The successful space missions like IUE, HST, GALEX and others provided scientists with ...
  • The pencil code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained 
    The Pencil Code Collaboration; Brandenburg, Axel; Johansen, Anders; Bourdin, Philippe A; Dobler, Wolfgang; Lyra, Wladimi; Rheinhardt, Matthias; Bingert, Sven; Haugen, Nils Erland L; Mee, Antony; Gent, Frederick; Babkovskaia, Natalia; Yang, Chao-Chin; Heinemann, Tobias; Dintrans, Boris; Mitra, Dhrubaditya; Candelares, Simon; Warnecke, Jörn; Käpylä, Petri J; Li, Xiang-Yu; Krüger, Jonas; Aarnes, Jørgen R; Sarson, Graeme R; Oishi, Jeffrey S; Schober, Jennifer; Schreiber, Andreas; Chatterjee, Piyali; Käpylä, Maarit J; Plasson, Raphaël; Sandin, Christer; Karchniwy, Ewa; Rodrigues, Luiz Felippe S; Hubbard, Alexander; Guerrero, Gustavo; Snodin, Andrew; Losada, Illa R; Pekkilä, Johannes; Qian, Chengeng (2021-02-21)
    The Pencil Code is a highly modular physics-oriented simulation code that can be adapted to a wide range of applications. It is primarily designed to solve partial differential equations (PDEs) of compressible hydrodynamics ...
  • Stellar and interstellar parameters from large photometric surveys 
    Malkov, O; Karpov, S; Kovaleva, D; Murthy, J; Sichevsky, S; Sytov, A; Zhao, G; Zhukov, A; Zakharo, A (NAS RA Byurakan Astrophysical Observatory, 2020-12)
    The parameterization of stars is a well known problem and used for various purposes in astronomy. We have shown that multicolor photometric data from large modern surveys can be used for parameterization of stars. With ...
  • Time-distance helioseismology of deep meridional circulation 
    Rajaguru, S. P; Antia, H. M (Springer, 2020)
    A key component of solar interior dynamics is the meridional circulation (MC), whose poleward component in the surface layers has been well observed. Time-distance helioseismic studies of the deep structure of MC, however, ...
  • SunPy: A Python package for Solar Physics 
    Mumford, S. J; Freij, Nabil; Christe, Steven; Ireland, Jack; Mayer, Florian; Hughitt, V. K; Shih, Albert Y; Ryan, Daniel F; Liedtke, Simon; Perez-Suarez, David; Chakraborty, Pritish; Arbolante, Quinn; Gomillion, Reid; Kothar, Yash; Sharma, Yash; Stevens, Abigail L; Price-Whelan, Adrian; Mehrotra, Ambar; Kustov, Arseniy; Stone, Brandon; Dang, Trung Kien; Arias, Emmanuel; Kustov; Stone, Brandon; Dang, Trung Kien; Arias, Emmanuel; Dover, Fionnlagh Mackenzie; Verstringe, Freek; Gulshan Kumar; Mathur, Harsh; and 21 co-authors; Vishnunarayan, K I; Inglis, Andrew; Pattnaik, Punyaslok; Sipocz, Brigitta; Rishabh Sharma; Leonard, Andrew; Stansby, David; Hewett, Russell; Hamilton, Alex; Hayes, Laura; Panda, Asish; Earnshaw, Matt; Choudhary, Nitin; Kumar, Ankit; Chanda, Prateek; Haque, Md Akramul; Kirk, Michael S; Mueller, Michael; Konge, Sudarshan; Srivastava, Rajul; Jain, Yash; Bennett, Samuel; Baruah, Ankit; Barnes, Will; Charlton, Michael; Maloney, Shane; Chorley, Nicky; Himanshu; Modi, Sanskar; Mason, James Paul; Naman9639; Rozo, Jose Ivan Campos; Manley, Larry; Chatterjee, Agneet; Evans, John; Malocha, Michael; Bobra, Monica G; Ghosh, Sourav; Airmansmith97; Stanczak, Dominik; De Visscher, Ruben; Verma, Shresth; Agrawal, Ankit; Buddhika, Dumindu; Sharma, Swapnil; Park, Jongyeob; Bates, Matt; Goel, Dhruv; Taylor, Garrison; Cetusic, Goran; Jacob; Inchaurrandieta, Mateo; Dacie, Sally; Dubey, Sanjeev; Sharma, Deepankar; Bray, Erik M; Rideout, Jai Ram; Zahniy, Serge; Meszaros, Tomas; Bose, Abhigyan; Chicrala, Andre; Ankit; Guennou, Chloe; D’Avella, Daniel; Williams, Daniel; Ballew, Jordan; Murphy, Nick; Lodha, Priyank; Robitaille, Thomas; Krishan, Yash; Hill, Andrew; Eigenbrot, Arthur; Mampaey, Benjamin; Wiedemann, Bernhard M; Molina, Carlos; Keşkek, Duygu; Habib, Ishtyaq; Letts, Joseph; Bazan, Juanjo (Check ?, 2020-02-14)
    The Sun, our nearest star, is a local laboratory for studying universal physical processes. Solar physics as a discipline includes studying the Sun both as a star and as the primary driver of space weather throughout the ...
  • SunPy 
    Mumford, Stuart J; Freij, Nabil; Christe, Steven; Ireland, Jack; Mayer, Florian; Shih, Albert Y; Stansby, David; Hughitt, V. Keith; Ryan, Daniel F; Liedtke, Simon; Perez-Suarez, David; Kirk, Michael S; Mueller, Michael; Konge, Sudarshan; Srivastava, Rajul; Jain, Yash; Bennett, Samuel; Baruah, Ankit; Arbolante, Quinn; Charlton, Michael; Mishra, Sashank; Verma, Shresth; Maloney, Shane; Chorley, Nicky; Himanshu; Chouhan, Aryan; Mason, James Paul; Modi, Sanskar; Sharma, Yash; Zivadinovic, Lazar; Naman9639; Rozo, Jose Ivan Campos; Lemos, Sophie; Manley, Larry; Bobra, Monica G; Chatterjee, Agneet; Ivashkiv, Kateryna; von Forstner, J. F; Bazan, Juanjo; Stern, Kris Akira; Evans, John; Jain, Sarthak; Malocha, Michael; Agrawal, Ankit; Ghosh, Sourav; Airmansmith97; Stanczak, Dominik; Singh, Rajiv Ranjan; De Visscher, Ruben; Alam, Arib; Buddhika, Dumindu; Pathak, Himanshu; Rideout, Jai Ram; Sharma, Swapnil; Park, Jongyeob; Bates, Matt; Williams, Daniel; Mishra, Pankaj; Sharma, Deepankar; Goel, Dhruv; Taylor, Garrison; Cetusic, Goran; Reite, Guntbert; Jacob; Inchaurrandieta, Mateo; Dacie, Sally; Dubey, Sanjeev; Verma, Dipanshu; Eigenbrot, Arthur; Bray, Erik M; Aaron Paul, Jeffrey; Surve, Rutuja; Zahniy, Serge; Meszaros, Tomas; Parkhi, Utkarsh; Bose, Abhigyan; Pande, Abhishek; Price-Whelan, Adrian; Ballew, Jordan; Amogh, J; Chicrala, Andre; Ankit; Guennou, Chloe; D'Avella, Daniel; Murphy, Nick; Lodha, Priyank; Robitaille, Thomas; Augspurger, Tom; Krishan, Yash; honey; Neerajkulk; Vishnunarayan, K. I; Hill, Andrew; Mampaey, Benjamin; Wiedemann, Bernhard M; Molina, Carlos; Keşkek, Duygu; Habib, Ishtyaq; Letts, Joseph; Streicher, Ole; Gomillion, Reid; Kothari, Yash; Hayes, Laura; Mridulpandey; Stevens, Abigail L; Abijith, B; Bahuleyan, Abijith; Mehrotra, Ambar; Smith, Arfon; Kustov, Arseniy; Stone, Brandon; MacBride, Conor; Arias, Emmanuel; Chakraborty, Pritish; Tollerud, Erik; Dover, Fionnlagh Mackenzie; Verstringe, Freek; Kumar, Gulshan; Mathur, Harsh; Inglis, Andrew; Pattnaik, Punyaslok; Sipocz, Brigitta; Sharma, Rishabh; Leonard, Andrew; Hewett, Russell; Hamilton, Alex; Manhas, Abhijeet; Panda, Asish; Earnshaw, Matt; Barnes, Will; Choudhary, Nitin; Kumar, Ankit; Singh, Raahul; Chanda, Prateek; Akramul Haque, Md (Check ?, 2021-02-22)
  • Oxygen abundances of carbon-enhanced stellar population in the halo 
    Susmitha, A; Sivarani, T; Ojha, D. K; Ninan, Joe P; Bandyopadhyay, A; Surya, A; Athira, U (Springer, 2020-12)
    The large fraction of carbon-enhanced metal-poor (CEMP) stars at lower metallicities makes them an interesting class of objects to be probed further in greater detail. They show different abundance patterns of neutron-capture ...
  • Geometry of nova ejecta 
    Pavana, M; Anupama, G. C; Ramya, M. Anche; Kamath, U. S; Selva Kumar, G (Cambridge University Press, 2020)
    We present photo-ionization and morpho-kinematic analyses of the ejecta of novae. The sample consists of ten novae belonging to the Fe II, He/N and hybrid classes. The Fe II class of novae in the sample have bipolar cone-like ...
  • Diagnosing chromospheric magnetic field through simultaneous spectropolarimetry in Hα and Ca II 854.2 nm 
    Nagaraju, K; Sankarasubramanian, K; Rangarajan, K. E (Cambridge University Press, 2020)
    Measurement of magnetic field in this layer is challenging both from point of view of observations and interpretation of the data. We present in this work about spectropolarimetric observations of a pore, simultaneously ...
  • Multi-wavelength analysis of CME-driven shock and Type II solar radio burst band-splitting 
    Lata Soni, Shirsh; Ebenezer, E; lal Yadav, Manohar (Springer, 2021-03)
    It is now well established that Coronal Mass Ejections (CMEs) may produce shocks in near Sun and interplanetary medium. A Type-II radio burst is characterized by shock and associated emission with very slow frequency drift ...

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