IIA Institutional Repository: Recent submissions

  • New models of reflection spectra for terrestrial exoplanets: Present and prebiotic Earth orbiting around stars of different spectral types 
    Singla, Manika; Sengupta, S (Elsevier B.V., 2023-08)
    In order to recognize a habitable exoplanet from future observed spectra, we present new model reflected spectra and geometric albedo for modern and prebiotic (∼3.9 Ga) Earth-like exoplanets orbiting within the habitable ...
  • Solar active region magnetic parameters and their relationship with the properties of halo coronal mass ejections 
    Shanmugaraju, A; Vijayalakshmi, P; Bendict Lawrance, M; Moon, Y. -J; Ebenezer, E (Elsevier B.V., 2023-08)
    The coronal mass ejections (CMEs) from the sun consist of the plasma and strong magnetic fields (~4–5 G at 1.3 R⊙) and generally, the fast CMEs are often associated with energetic particles of energy few hundreds of MeV. ...
  • BEYONDPLANCK - IV. Simulations and validation 
    Brilenkov, M; Fornazier, K. S. F; Hergt, L. T; Hoerning, G. A; Marins, A; Murokoshi, T; Fazlu Rahman; Stutzer, N-O; Zhou, Y; Abdalla, F. B; Andersen, K. J; Aurlien, R; Banerji, R; Basyrov, A; Battista, A; Bersanelli, M; Bertocco, S; Bollanos, S; Colombo, L. P. L; Eriksen, H. K; Eskilt, J. R; Foss, M. K; Franceschet, C; Fuskeland, U; Galeotta, S; Galloway, M; Gerakakis, S; Gjerløw, E; Hensley, B; Herman, D; Hoang, T. D; Ieronymaki, M; Ihle, H. T; Jewell, J. B; Karakci, A; Keihänen, E; Keskitalo, R; Maggio, G; Maino, D; Maris, M; Paradiso, S; Partridge, B; Reinecke, M; Suur-Uski, A-S; Svalheim, T. L; Tavagnacco, D; Thommesen, H; Tomasi, M; Watts, D. J; Wehus, I. K; Zacchei, A (EDP Sciences, 2023-07)
    End-to-end simulations play a key role in the analysis of any high-sensitivity cosmic microwave background (CMB) experiment, providing high-fidelity systematic error propagation capabilities that are unmatched by any other ...
  • The Origin of Dust Polarization in the Orion Bar 
    Gouellec, Valentin J. M. Le; Andersson, B-G; Archana Soam; Schirmer, Thiébaut; Michail, Joseph M.; Lopez-Rodriguez, Enrique; Flores, Sophia; Chuss, David T.; Vaillancourt, John E.; Hoang, Thiem; Lazarian, Alex (American Astronomical Society, 2023-07-10)
    The linear polarization of thermal dust emission provides a powerful tool to probe interstellar and circumstellar magnetic fields, because aspherical grains tend to align themselves with magnetic field lines. While the ...
  • Magnetic Fields and Fragmentation of Filaments in the Hub of California-X 
    Chung, Eun Jung; Lee, Chang Won; Kwon, Woojin; Tafalla, Mario; Kim, Shinyoung; Archana Soam; Cho, Jungyeon (American Astronomical Society, 2023-07-01)
    We present 850 μm polarization and C18O (3-2) molecular line observations toward the X-shaped nebula in the California molecular cloud using James Clerk Maxwell Telescope (JCMT)’s SCUBA-2/POL-2 and HARP instruments. The ...
  • Lepto-hadronic Interpretation of 2021 RS Ophiuchi Nova Outburst 
    De Sarkar, Agnibha; Nayana, A. J; Roy, Nirupam; Razzaque, Soebur; Anupama, G. C (American Astronomical Society, 2023-07-01)
    Very-high-energy (VHE; 100 GeV < E ≤ 100 TeV) and high-energy (HE; 100 MeV < E ≤ 100 GeV) gamma rays were observed from the symbiotic recurrent nova RS Ophiuchi (RS Oph) during its outburst in 2021 August by various ...
  • Misaligned Jets from Sgr A* and the Origin of Fermi/eROSITA Bubbles 
    Sarkar, Kartick C; Mondal, Santanu; Sharma, Prateek; Piran, Tsvi (American Astronomical Society, 2023-07-01)
    One of the leading explanations for the origin of Fermi Bubbles is past jet activity in the Galactic center supermassive black hole Sgr A*. The claimed jets are often assumed to be perpendicular to the Galactic plane. ...
  • ARIES ST Radar: The First Central Himalayan Wind Profiler 
    Bhattacharjee, Samaresh; Naja, Manish; Jaiswal, Aditya; Rawat, Kishan Singh; Sagar, Ram; Ananthakrishnan, S (World Scientific Publishing Company, 2022-12)
    Recently, a 206.5MHz Stratosphere Troposphere (ST) Radar system was successfully installed and made operationalized at Aryabhatta Research Institute of Observational Sciences (ARIES) (29.4N, 79.2E, 1793m amsl), Nainital, ...
  • Defining the Middle Corona 
    West, Matthew J; Seaton, D. B; Wexler, David B; Raymond, J. C; Zanna, Giulio Del; Rivera, Yeimy J; Kobelski, Adam R; Chen, Bin; DeForest, Craig; Golub, L; Caspi, Amir; Gilly, Chris R; Kooi, Jason E; Meyer, Karen A; Alterman, Benjamin L; Alzate, Nathalia; Andretta, Vincenzo; Auchere, Frederic; Banerjee, D; Berghmans, David; Chamberlin, Phillip; Chitta, L. P; Downs, Cooper; Giordano, Silvio; Harra, Louise; Higginson, Aleida; Howard, Russell A; Kumar, Pankaj; Mason, Emily; Mason, James Paul; Morton, R. J; Nykyri, Katariina; Ritesh Patel; Rachmeler, Laurel; Reardon, K. P; Reeves, Katharine K; Savage, Sabrina; Thompson, Barbara J; Kooten, Samuel J. Van; Viall, Nicholeen M; Vourlidas, Angelos; Zhukov, Andrei N (Springer, 2023-06)
    The middle corona, the region roughly spanning heliocentric distances from 1.5 to 6 solar radii, encompasses almost all of the influential physical transitions and processes that govern the behavior of coronal outflow ...
  • Evidence of high-mass star formation through multiscale mass accretion in hub-filament-system clouds 
    Liu, Hong-Li; Tej, Anandmayee; Liu, Tie; Sanhueza, Patricio; Qin, Sheng-Li; He, Jinhua; Goldsmith, Paul F; Garay, Guido; Pan, Sirong; Morii, Kaho; Li, Shanghuo; Stutz, Amelia; Tatematsu, Ken’ichi; Xu, Feng-Wei; Bronfman, Leonardo; Saha, Anindya; Issac, Namitha; Baug, Tapas; Toth, L Viktor; Dewangan, Lokesh; Wang, Ke; Zhou, Jianwen; Lee, Chang Won; Yang, Dongting; Luo, Anxu; Shen, Xianjin; Zhang, Yong; Wu, Yue-Fang; Ren, Zhiyuan; Liu, Xun-Chuan; Archana Soam; Zhang, Siju; Luo, Qiu-Yi (Oxford University Press on behalf of Royal Astronomical Society, 2023-07)
    We present a statisticalstudy of a sample of 17 hub-filament-system (HFS) clouds of high-massstar formation using high-angular resolution (∼1–2 arcsec) ALMA 1.3 and 3 mm continuum data. The sample includes eight infrared ...
  • Physics and Chemistry of Radiation Driven Cloud Evolution. [C II] Kinematics of IC 59, and IC 63 
    Caputo, Miranda; Archana Soam; Andersson, B-G; Dennis, Remy; Chambers, Ed; Gusten, Rolf; Knee, Lewis B. G; Stutzki, Jurgen (American Astronomical Society, 2023-06-20)
    We used high-resolution [C II] 158 μm mapping of two nebulae IC 59 and IC 63 from SOFIA/upGREAT in conjunction with ancillary data of the gas, dust, and polarization to probe the kinematics, structure, and magnetic properties ...
  • Star Formation in the Dwarf Seyfert Galaxy NGC 4395: Evidence for Both AGN and SN Feedback? 
    Nandi, Payel; Stalin, C. S; Saikia, D. J; Muneer, S; Mountrichas, George; Wylezalek, D; Sagar, R; Patig, M. K (American Astronomical Society, 2023-06-20)
    We present a detailed multiwavelength study of star formation in the dwarf galaxy NGC 4395, which hosts an active galactic nucleus (AGN). From our observations with the Ultra-Violet Imaging Telescope, we have compiled a ...
  • A Sensitive Search for Supernova Emission Associated with the Extremely Energetic and Nearby GRB 221009A 
    Srinivasaragavan, Gokul P; O'Connor, Brendan; Bradley Cenko, S; Dittmann, Alexander J; Yang, Sheng; Sollerman, Jesper; Anupama, G. C; Barway, Sudhanshu; Bhalerao, Varun; Kumar, Harsh; Swain, Vishwajeet; Hammerstein, Erica; Holt, Isiah; Anand, Shreya; Andreoni, Igor; Coughlin, Michael W; Dichiara, Simone; Gal-Yam, Avishay; Coleman Miller, M; Soon, Jaime; Soria, Roberto; Durbak, Joseph; Gillanders, James H; Laha, Sibasish; Moore, Anna M; Ragosta, Fabio; Troja, Eleonora (American Astronomical Society, 2023-06-01)
    We report observations of the optical counterpart of the long gamma-ray burst GRB 221009A. Due to the extreme rarity of being both nearby (z = 0.151) and highly energetic (Eγ,iso 1054 erg), GRB 221009A offers a unique ...
  • Hanle Effect with Angle-dependent Partial Frequency Redistribution in Threedimensional Media 
    Anusha, L. S (American Astronomical Society, 2023-06-01)
    There has been a constant improvement in the observational measurement of linear polarization in chromospheric spectral lines in the last three decades. However, modeling polarized profiles of these lines still remains ...
  • A study of the evolution of the bulges and disks of spiral galaxies in interacting and isolated environments 
    Ankit Kumar (Indian Institute of Astrophysics, 2022-11)
  • Intranight optical variability of blazars and radio-quiet quasars using the ZTF survey 
    Negi, Vibhore; Gopal-Krishna; Joshi, Ravi; Chand, Hum; Wiita, Paul J; Navaneeth, P. K; Singh, Ravi S (Oxford University Press on behalf of Royal Astronomical Society, 2023-07)
    We explore the potential of the ongoing Zwicky Transient Facility (ZTF) survey for studying intranight optical variability (INOV) of active galactic nuclei (AGNs), in particular for picking rare events of large INOV ...
  • Preparing for solar and heliospheric science with the SKAO: An Indian perspective 
    Oberoi, Divya; Bisoi, Susanta Kumar; Sasikumar Raja, K; Kansabanik, Devojyoti; Mohan, Atul; Mondal, Surajit; Sharma, Rohit (Indian Academy of Sciences, 2023-06)
    The Square Kilometre Array Observatory (SKAO) is perhaps the most ambitious radio telescope envisaged yet. It will enable unprecedented studies of the Sun, corona and heliosphere and help to answer many of the outstanding ...
  • High-resolution Observations of HI in the IC 63 Reflection Nebula 
    Bonne, Lars; Andersson, B-G; Minchin, Robert; Archana Soam; Yaldaei, Joshua; Kulas, Kristin; Karoly, Janik; Knee, Lewis B. G; Kumar, Siddharth; Roy, Nirupam (American Astronomical Society, 2023-06-01)
    Photodissociation regions (PDRs), where the (far-)ultraviolet light from hot young stars interact with the gas in surrounding molecular clouds, provide laboratories for understanding the nature and role of feedback by ...
  • A physically-motivated perspective of Fanaroff–Riley classification of radio galaxies 
    Gopal-Krishna; Wiita, Paul J; Joshi, Ravi; Patra, Dusmanta (Indian Academy of Sciences, 2023-06)
    A small subset of extragalactic double radio sources, termed HYbrid MOrpholgy Radio Sources (HYMORS), is distinguished by a very unusual, hybrid morphology in terms of Fanaroff–Riley (FR) classification. In HYMORS, one ...
  • Fullerenes in the circumstellar medium of Herbig Ae/Be stars: insights from the Spitzer mid-infrared spectral catalog 
    Arun, R; Mathew, Blesson; Manoj, P; Maheswar, G; Shridharan, B; Kartha, Sreeja S; Narang, Mayank (Oxford University Press on behalf of Royal Astronomical Society, 2023-08)
    This study presents the largest mid-infrared spectral catalogue of Herbig Ae/Be stars to date, containing the Spitzer Infrared Spectrograph spectra of 126 stars. Based on the catalogue analysis, two prominent infrared ...

Search DSpace

Browse

My Account