IIA Institutional Repository: Recent submissions

  • Tracing hierarchical star formation out to kiloparsec scales in nearby spiral galaxies with UVIT 
    Shashank, Gairola; Subramanian, S; Muraleedharan, Sreedevi; Menon, Shyam H; Mondal, Chayan; Krishna, Sriram; Mousumi Das; Subramaniam, A (EDP Sciences, 2025-01)
    Molecular clouds fragment under the action of supersonic turbulence and gravity, which results in a scale-free hierarchical distribution of star formation within galaxies. Recent studies suggest that the hierarchical ...
  • A compilation of optical starlight polarization catalogs 
    Panopoulou, G. V; Markopoulioti, L; Bouzelou, F; Millar-Blanchaer, M. A; Tinyanont, S; Blinov, D; Pelgrims, V; Johnson, S; Skalidis, R; Archana Soam (American Astronomical Society, 2025-01)
    Polarimetry of stars at optical and near-infrared wavelengths is an invaluable tool for tracing interstellar dust and magnetic fields. Recent studies have demonstrated the power of combining stellar polarimetry with distances ...
  • Bar formation and destruction in the FIRE-2 simulations 
    Ansar, Sioree; Pearson, Sarah; Sanderson, Robyn E; Arora, Arpit; Hopkins, Philip F; Wetzel, Andrew; Cunningham, Emily C; Quinn, Jamie (American Astronomical Society, 2025-01-01)
    The physical mechanisms responsible for bar formation and destruction in galaxies remain a subject of debate. While we have gained valuable insight into how bars form and evolve from isolated idealized simulations, in the ...
  • Gravitational physics in the context of Indian astronomy: A vision document 
    Ajith, P; Arun, K. G; Bose, Sukanta; Chakraborty, Sumanta; Desai, Shantanu; Gopakumar, A; Kolekar, Sanved; Nayak, Rajesh; Pai, Archana; Sarkar, Sudipta; Bagla, Jasjeet Singh; Gupta, Patrick Das; Kashyap, Rahul; Kocherlakota, Prashant; Kumar, Prayush; Mukhopadhyay, Banibrata (Springer Nature, 2025-06)
    Contributions from the Indian gravity community have played a significant role in shaping several branches of astronomy and astrophysics. This document reviews some of the most important contributions and presents a vision ...
  • Automated detection of galactic rings from sloan digital sky survey images 
    Abraham, Linn; Abraham, Sheelu; Kembhavi, A. K; Philip, N. S; Aniyan, A. K; Barway, Sudhanshu; Kumar, Harish (American Astronomical Society, 2025-01-10)
    Morphological features in galaxies—like spiral arms, bars, rings, and tidal tails, etc.—carry information about their structure, origin, and evolution. It is therefore important to catalog and study such features and to ...
  • Research on the interstellar medium and star formation in the Galaxy: An Indian perspective 
    Mookerjea, B; Maheswar, G; Acharyya, K; Baug, Tapas; Datta, Prasun; Jose, J; Ojha, D. K; Pandian, Jagadheep D; Roy, Nirupam; Samal, Manash; Sharma, Saurabh; Archana Soam; Vig, S; Das, Ankan; Dewangan, Lokesh; Dutta, Somnath; Eswariah, C; Majumdar, Liton; Mallick, K. K; Mondal, Soumen; Ninan, Joe P; Panwar, Neelam; Pathak, A; Rastogi, Shantanu; Sahu, Dipen; Tej, Anandmayee (Springer Nature, 2025-06)
    Although the star-formation process has been studied for decades, many important aspects of the physics involved remain unsolved. Recent advancements in instrumentation in the infrared, far-infrared, and sub-millimeter-wavelength ...
  • X-ray timing and spectral characteristics of compact symmetric objects 
    Swain, Subhashree; Stalin, C. S; Paliya, Vaidehi S; Saikia, D. J (Oxford University Press on behalf of Royal Astronomical Society, 2025-02)
    Compact Symmetric Objects (CSOs) are a distinct category of jetted active galactic nuclei whose high-energy emission is not well understood. We examined the X-ray characteristics of 17 bona fide CSOs using observations ...
  • The 10 pc neighborhood of habitable zone exoplanetary systems: Threat assessment from stellar encounters and supernovae 
    Tisyagupta, Pyne; Banyal, R. K; Swastik, C; Ayanabha, De (American Astronomical Society, 2025-01)
    The habitability of a planet is influenced by both its parent star and the properties of its local stellar neighborhood. Potential threats to habitability from the local stellar environment mainly arise from two factors: ...
  • A tale of three: magnetic fields along the orion integral-shaped filament as revealed by the JCMT BISTRO survey 
    Wu, Jintai; Qiu, Keping; Poidevin, Frederick; Bastien, Pierre; Liu, Junhao; Ching, Tao-Chung; Bourke, Tyler L; Ward-Thompson, Derek; Pattle, Kate; Johnstone, Doug; Koch, Patrick M; Li, Hua-Bai; Berry, David; Furuya, Ray S; Coude, Simon; Kwon, Woojin; Lin, Sheng-Jun; Wang, Jia-Wei; Hasegawa, Tetsuo; Lai, Shih-Ping; Fiege, Jason; Kim, Kee-Tae; Byun, Do-Young; Chen, Zhiwei; Chen, Huei-Ru Vivien; Chen, Wen Ping; Chen, Mike; Cho, Jungyeon; Choi, Youngwoo; Choi, Yunhee; Choi, Minho; Chrysostomou, Antonio; Kim, Jongsoo; Fissel, Laura M; Chung, Eun Jung; Dai, Sophia; Di Francesco, James; Diep, Pham Ngoc; Doi, Yasuo; Franzmann, Erica; Friberg, Per; Friesen, Rachel; Fuller, Gary; Kim, Hyosung; Gledhill, Tim; Matsumura, Masafumi; Graves, Sarah; Greaves, Jane; Griffin, Matt; Gu, Qilao; Han, Ilseung; Hayashi, Saeko; Hoang, Thiem; Houde, Martin; Kim, Gwanjeong; Inoue, Tsuyoshi; Inutsuka, Shu-ichiro; Matthews, Brenda; Iwasaki, Kazunari; Jeong, Il-Gyo; Konyves, Vera; Kang, Ji-hyun; Kang, Miju; Karoly, Janik; Kataoka, Akimasa; Kirchschlager, Florian; Kawabata, Koji; Kim, Shinyoung; Kim, Mi-Ryang; Moriarty-Schieven, Gerald; Kim, Kyoung Hee; Kirk, Jason; Kobayashi, Masato I. N; Kusune, Takayoshi; Kwon, Jungmi; Nagata, Tetsuya; Tram, Le Ngoc; Lacaille, Kevin; Law, Chi-Yan; Lee, Hyeseung; Lee, Chin-Fei; Lee, Sang-Sung; Lee, Jeong-Eun; Li, Dalei; Li, Di; Li, Guangxing; Liu, Sheng-Yuan; Tsukamoto, Yusuke; Nakamura, Fumitaka; Liu, Tie; Liu, Hong-Li; Lu, Xing; Lyo, A-Ran; Mairs, Steve; Nakanishi, Hiroyuki; Ngoc, Nguyen Bich; Ohashi, Nagayoshi; Park, Geumsook; Viti, Serena; Parsons, Harriet; Arzoumanian, Doris; Peretto, Nicolas; Priestley, Felix; Pyo, Tae-Soo; Qian, Lei; Rao, Ramprasad; Rawlings, Jonathan; Rawlings, Mark; Retter, Brendan; Wang, Hongchi; Richer, John; Rigby, Andrew; Lee, Chang Won; Sadavoy, Sarah; Saito, Hiro; Savini, Giorgio; Seta, Masumichi; Sharma, Ekta; Shimajiri, Yoshito; Shinnaga, Hiroko; Whitworth, Anthony; Tang, Ya-Wen; Tang, Xindi; Thuong, Hoang Duc; Fanciullo, Lapo; Tomisaka, Kohji; Xie, Jinjin; Yang, Meng-Zhe; Yen, Hsi-Wei; Yoo, Hyunju; Onaka, Takashi; Duan, Hao-Yuan; Yuan, Jinghua; Yun, Hyeong-Sik; Zenko, Tetsuya; Zhang, Guoyin; Zhang, Chuan-Peng; Zhang, Yapeng; Zhou, Jianjun; Zhu, Lei; Looze, Ilse de; Andre, Philippe; Duan, Yan; Hwang, Jihye; Dowell, C. Darren; Eyres, Stewart; Falle, Sam; Robitaille, Jean-Francois; van Loo, Sven; Gouellec, Valentin J. M. Le; Archana Soam; Tamura, Motohide; Tahani, Mehrnoosh; Eden, David; Eswaraiah, Chakali (American Astronomical Society, 2024-12-20)
    As part of the B-fields In Star-forming Region Observations survey, we present James Clerk Maxwell Telescope (JCMT) 850 μm polarimetric observations toward the Orion integral-shaped filament (ISF) that covers three portions ...
  • Analysis of Gaia DR3 data of selected R Stars (warm carbon stars) 
    Parthasarathy, M (American Astronomical Society, 2024-12)
    An analysis of Gaia DR3 data of 67 R stars is presented and 57 of them are at high galactic latitudes. Three new variable stars are found. The long period luminous variable R stars and R8 stars may be variable carbon stars ...
  • Butterfly diagram and other properties of plage areas from kodaikanal Ca II K photographs covering 1904 – 2007 
    Jha, Bibhuti K; Chatzistergos, Theodosios; Banerjee, D; Ermolli, Ilaria; Krivova, Natalie A; Solanki, Sami K; Priyadarshi, Aditya (Springer Nature, 2024-12)
    Ca II K observations of the Sun have a great potential for probing the Sun’s magnetism and activity, as well as for reconstructing solar irradiance. The Kodaikanal Solar Observatory (KoSO) in India, houses one of the most ...
  • Accurate sticking coefficient calculation for carbonaceous dust growth through accretion and desorption in astrophysical environments 
    Bossion, D; Sarangi, A; Aalto, S; Esmerian, C; Hashemi, S. R; Knudsen, K. K; Vlemmings, W; Nyman, G (EDP Sciences, 2024-12)
    Context. Cosmic dust is ubiquitous in astrophysical environments, where it significantly influences the chemistry and the spectra. Dust grains are likely to grow through the accretion of atoms and molecules from the gas-phase ...
  • CSS 161010: A luminous fast blue optical transient with broad blueshifted hydrogen lines 
    Gutierrez, Claudia P; Mattila, S; Lundqvist, P; Dessart, Luc; Gonzalez-Gaitan, S; Jonker, Peter G; Dong, Subo; Coppejans, Deanne; Chen, Ping; Charalampopoulos, Panos; Elias-Rosa, N; Reynolds, Thomas M; Kochanek, C. S; Fraser, M; Pastorello, A; Gromadzki, Mariusz; Neustadt, Jack; Benetti, S; Kankare, E; Kangas, T; Kotak, R; Stritzinger, M. D; Wevers, Thomas; Zhang, B; Bersier, D; Bose, Subhash; Buckley, David A. H; Dastidar, Raya; Gangopadhyay, Anjasha; Hamanowicz, Aleksandra; Kollmeier, Juna A; Mao, Jirong; Misra, Kuntal; Potter, Stephen. B; Prieto, Jose L; Romero-Colmenero, Encarni; Singh, Mridweeka; Somero, Auni; Terreran, Giacomo; Vaisanen, Petri; Wyrzykowski, Lukasz (American Astronomical Society, 2024-12-20)
    We present ultraviolet, optical, and near-infrared photometric and optical spectroscopic observations of the luminous fast blue optical transient (LFBOT) CSS 161010:045834–081803 (CSS 161010). The transient was found in a ...
  • The JCMT BISTRO survey: The magnetic fields of the IC 348 star-forming region 
    Choi, Youngwoo; Kwon, Woojin; Pattle, Kate; Arzoumanian, Doris; Bourke, Tyler L; Hoang, Thiem; Hwang, Jihye; Koch, Patrick M; Sadavoy, Sarah; Bastien, Pierre; Furuya, Ray; Kwon, Jungmi; Lacaille, Kevin; Law, Chi-Yan; Lee, Chang Won; Lee, Hyeseung; Lee, Chin-Fei; Lee, Jeong-Eun; Lee, Sang-Sung; Li, Dalei; Li, Di; Viti, Serena; Onaka, Takashi; Li, Guangxing; Li, Hua-bai; Lin, Sheng-Jun; Liu, Hong-Li; Liu, Tie; Liu, Sheng-Yuan; Liu, Junhao; Longmore, Steven; Lu, Xing; Wang, Hongchi; Lyo, A-Ran; Park, Geumsook; Mairs, Steve; Matsumura, Masafumi; Matthews, Brenda; Moriarty-Schieven, Gerald; Nagata, Tetsuya; Nakamura, Fumitaka; Parsons, Harriet; Peretto, Nicolas; Wang, Jia-Wei; Priestley, Felix; Pyo, Tae-Soo; Qian, Lei; Lai, Shih-Ping; Rao, Ramprasad; Rawlings, Jonathan; Rawlings, Mark; Retter, Brendan; Richer, John; Rigby, Andrew; Whitworth, Anthony; Saito, Hiro; Savini, Giorgio; Seta, Masumichi; Sharma, Ekta; Qiu, Keping; Shimajiri, Yoshito; Shinnaga, Hiroko; Archana Soam; Tahani, Mehrnoosh; Tamura, Motohide; Wu, Jintai; Tang, Ya-Wen; Tang, Xindi; Tomisaka, Kohji; Tram, Le Ngoc; Tsukamoto, Yusuke; Ward-Thompson, Derek; Xie, Jinjin; Yang, Meng-Zhe; Yen, Hsi-Wei; Yoo, Hyunju; Yuan, Jinghua; Greaves, Jane; Berry, David; Yun, Hyeong-Sik; Zenko, Tetsuya; Zhang, Guoyin; Zhang, Yapeng; Zhang, Chuan-Peng; Zhou, Jianjun; Zhu, Lei; Looze, Ilse de; Andre, Philippe; Griffin, Matt; Dowell, C. Darren; Byun, Do-Young; Eden, David; Eyres, Stewart; Falle, Sam; Gouellec, Valentin J. M. Le; Poidevin, Frederick; Loo, Sven van; Chen, Huei-Ru Vivien; Chen, W.P; Gu, Qilao; Chen, Mike; Chen, Zhiwei; Ching, Tao-Chung; Cho, Jungyeon; Choi, Minho; Choi, Yunhee; Coude, Simon; Chrysostomou, Antonio; Chung, Eun Jung; Dai, Sophia; Han, Ilseung; Debattista, Victor; Francesco, James Di; Diep, Pham Ngoc; Doi, Yasuo; Duan, Hao-Yuan; Duan, Yan; Eswaraiah, Chakali; Fanciullo, Lapo; Fiege, Jason; Fissel, Laura M; Hasegawa, Tetsuo; Franzmann, Erica; Friber, Per; Friesen, Rachel; Fuller, Gary; Gledhill, Tim; Graves, Sarah; Houde, Martin; Hull, Charles L. H; Inoue, Tsuyoshi; Inutsuka, Shu-ichiro; Iwasaki, Kazunari; Nakanishi, Hiroyuki; Jeong, Il-Gyo; Johnstone, Doug; Karoly, Janik; Könyves, Vera; Kang, Ji-hyun; Kang, Miju; Kataoka, Akimasa; Kawabata, Koji; Kemper, Francisca; Kim, Jongsoo; Ngoc, Nguyen Bich; Kim, Shinyoung; Kim, Gwanjeong; Kim, Kyoung Hee; Kim, Mi-Ryang; Kim, Kee-Tae; Kim, Hyosung; Kirchschlager, Florian; Kirk, Jason; Kobayashi, Masato I. N; Kusune, Takayoshi; Ohashi, Nagayoshi (American Astronomical Society, 2024-12-10)
    We present 850 μm polarization observations of the IC 348 star-forming region in the Perseus molecular cloud as part of the B-fields In STar-forming Region Observation survey. We study the magnetic properties of two cores ...
  • Star formation in neutral hydrogen gas reservoirs at cosmic noon 
    Dharmender; Joshi, Ravi; Fumagalli, Michele; Noterdaeme, Pasquier; Chand, Hum; Ho, Luis C (EDP Sciences, 2024-12)
    We aim to constrain the average star formation associated with neutral hydrogen gas reservoirs at cosmic noon. We used a unprecedented sample of 1716 high-column-density, damped Ly-α absorbers (DLAs) from the Sloan Digital ...
  • AT 2021hdr: A candidate tidal disruption of a gas cloud by a binary super massive black hole system 
    Hernandez-García, L; Munoz-Arancibia, A. M; Lira, P; Bruni, G; Cuadra, J; Arevalo, P; Sanchez-Saez, P; Bernal, S; Bauer, Franz E; Catelan, Marcio; Panessa, F; Pavez-Herrera, M; Ricci, Claudio; Reyes-Jainaga, I; Ailawadhi, Bhavya; Chavushyan, V; Dastidar, R; Deconto-Machado, A; Forster, F; Gangopadhyay, A; Garcia-Perez, A; Marquez, I; Masegosa, J; Misra, K; Patino-Alvarez, V. M; Puig-Subira, M; Rodi, J; Singh, M (EDP Sciences, 2024-12)
    With a growing number of facilities able to monitor the entire sky and produce light curves with a cadence of days, in recent years there has been an increased rate of detection of sources whose variability deviates from ...
  • Transition region brightening in a moss region and their relation with lower atmospheric dynamics 
    Ram, Bhinva; Samanta, T; Chen, Yajie; Sterling, Alphonse C; Joshi, Jayant; Yurchyshyn, Vasyl; Chitta, L. P; Pant, Vaibhav (American Astronomical Society, 2024-12-10)
    Small-scale brightenings (SBs) are commonly observed in the transition region (TR) that separates the solar chromosphere from the corona. These brightenings, omnipresent in active region patches known as "moss" regions, ...
  • Demography of stellar radio population within 500 pc: a VLASS-gaia DR3 study 
    Ayanabha, D; Narang, Mayank; Puravankara, Manoj; Shridharan, B; Tyagi, Himanshu; Banerjee, Bihan; Nayak, Prasanta K; Surya, Arun (American Astronomical Society, 2024-12)
    In this work, we have carried out a systematic analysis of the Very Large Array Sky Survey (VLASS) quick look catalogs together with Gaia DR3 to identify the optical counterparts of 3 GHz radio emitters within 500 pc to ...
  • Insight-HXMT view of the black hole candidate swift J1727.8–1613 during its outburst in 2023 
    Chatterjee, Kaushik; Mondal, Santanu; Singh, Chandra B; Sugizaki, Mutsumi (American Astronomical Society, 2024-12-20)
    The transient Galactic black hole candidate Swift J1727.8-1613 went through an outburst for the very first time in 2023 August and lasted for almost 6 months. We study the timing and spectral properties of this source using ...
  • Low-latitude auroras: insights from 2023 april 23 solar storm 
    Vichare, Geeta; Bhaskar, Ankush; Rawat, Rahul; Yadav, Virendra; Mishra, Wageesh; Angchuk, D; Singh, Anand Kumar (American Astronomical Society, 2024-12-20)
    In 2023 April, a low-latitude aurora observed by the all-sky camera at Hanle, Ladakh, India (33°14'N geographic latitude), generated significant interest. This was the first such aurora recorded from the Indian region in ...

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