Browsing by Issue Date

Sort by: Order: Results:

  • Analysis of Front Side Halo CMEs and Their Solar Source Active Region and Flare Ribbon Properties 
    Vijayalakshmi, P; Shanmugaraju, A; Bendict Lawrance, M; Moon, Y.-J; Na, Hyeonock; Ebenezer, E (Springer, 2023-02)
    Halo coronal mass ejections (CMEs) from the Sun are the subset of CMEs, which are more energetic than the normal CMEs. Only the more energetic CMEs are observable in whitelight coronagraphs when they are traveling along ...
  • India's first mission to study the Sun will be launched by June-July 
    The Hindu (The Hindu, 2023-01-27)
  • Solar Coronal Density Turbulence and Magnetic Field Strength at the Source Regions of Two Successive Metric Type II Radio Bursts 
    Ramesh, R; Kathiravan, C; Anshu Kumari (American Astronomical Society, 2023-01-20)
    We report spectral and polarimeter observations of two weak, low-frequency (≈85–60 MHz) solar coronal type II radio bursts that occurred on 2020 May 29 within a time interval ≈2 minutes. The bursts had fine structures, ...
  • Minkowski Tensors in Redshift Space—Beyond the Plane-parallel Approximation 
    Appleby, Stephen; Kochappan, Joby P; Pravabati, C; Park, Changbom (American Astronomical Society, 2023-01-10)
    The Minkowski tensors (MTs) can be used to probe anisotropic signals in a field, and are well suited for measuring the redshift-space distortion (RSD) signal in large-scale structure catalogs. We consider how the linear ...
  • Radio-loud Exoplanet-exomoon Survey: GMRT Search for Electron Cyclotron Maser Emission 
    Narang, Mayank; Oza, Apurva V; Hakim, Kaustubh; Manoj, P; Banyal, R. K; Thorngren, Daniel P (American Astronomical Society, 2023-01-01)
    We conducted the first dedicated search for signatures of exoplanet–exomoon interactions using the Giant Metrewave Radio Telescope (GMRT) as part of the radio-loud exoplanet-exomoon survey. Due to stellar tidal heating, ...
  • Accretion flow properties of MAXI J1910-057/Swift J1910.2–0546 during its 2012–13 outburst 
    Debnath, Dipak; Chatterjee, Kaushik; Jana, Arghajit; Chatterjee, Debjit; Bhowmick, Riya (Elsevier B.V, 2023-01-01)
    Galactic black hole candidate MAXI J1910-057/Swift J1910.2–0546 was simultaneously discovered by MAXI/GSC and Swift/BAT satellites during its first outburst in 2012. We study the detailed spectral and temporal properties ...
  • 1-D dusty photo-ionization models of WR planetary nebulae NGC 2452 and IC 2003 
    Muthumariappan, C; Amrutha, B. M; Selvakumar, G (Elsevier B.V., 2023-01-01)
    We report dusty photo-ionization models for two Planetary Nebulae NGC 2452 and IC 2003, which have [WR] type central stars, using 1D photo-ionization code Cloudy17.02. We used the medium resolution optical spectra and ...
  • Search for coronal temperature variation in Seyfert galaxies 
    Pal, Indrani; Stalin, C. S (Oxford University Press on behalf of Royal Astronomical Society, 2023-01)
    While the temperature of the X-ray corona (kTe) in active galactic nuclei (AGNs) is known for many sources, its variation if any is limited to a handful of objects. This is in part due to the requirement of good signal-to-noise ...
  • Photometric identification of compact galaxies, stars, and quasars using multiple neural networks 
    Chaini, Siddharth; Bagul, Atharva; Deshpande, Anish; Gondkar, Rishi; Sharma, Kaushal; Vivek, M; Kembhavi, Ajit (Oxford University Press on behalf of Royal Astronomical Society, 2023-01)
    We present MargNet, a deep learning-based classifier for identifying stars, quasars, and compact galaxies using photometric parameters and images from the Sloan Digital Sky Survey Data Release 16 catalogue. MargNet consists ...
  • TNO or Comet? The Search for Activity and Characterization of Distant Object 418993 (2009 MS9) 
    Bufanda, Erica; Meech, Karen J; Kleyna, Jan T; Hainaut, Olivier R; Bauer, James M; Stephens, Haynes; Veres, Peter; Micheli, Marco; Keane, Jacqueline V; Weryk, Robert; Wainscoat, Richard; Sahu, D. K; Bhatt, B. C (American Astronomical Society, 2023-01)
    The perihelion of the trans-Neptunian object (TNO) 2009 MS9 brings it close to the distance where some longperiod comets are seen to become active. Knowing this, and the fact that this object appears to brighten in excess ...
  • X-Ray and Ultraviolet Flares on AT Microscopii Observed by AstroSat 
    Kuznetsov, A. A; Karakotov, R. R; Chandrashekhar, K; Banerjee, D (IOP Publishing, 2023-01)
    We present observations of the active M-dwarf binary AT Mic (dM4.5e+dM4.5e) obtained with the orbital observatory AstroSat. During 20 ks of observations, in the far-ultraviolet (130–180 nm) and soft X-ray (0.3–7 keV) spectral ...
  • A Gaia based analysis of open cluster Berkeley 27 
    Sariya, Devesh P; Jiang, Ing-Guey; Bisht, D; Yadav, R. K. S; Rangwal, Geeta (Elsevier B.V, 2023-01)
    In this paper, we have used the Gaia’s Data Release-3 (DR3) data to study an intermediate-age open cluster Berkeley 27 (Be 27). A total of 131 most probable cluster members are picked within the cluster’s radius based ...
  • Image Quality Specification for Solar Telescopes 
    Saraswathi Kalyani, S; Sridharan, R (Springer, 2023-01)
    Modern large ground-based solar telescopes are invariably equipped with adaptive optics systems to enhance the high angular resolution imaging and spectroscopic capabilities in the presence of Earth's atmospheric turbulence. ...
  • Indian Institute of Astrophysics team surprised by discovery on hot stars and white dwarfs 
    The Hindu (The Hindu, 2022-12-30)
  • A very luminous jet from the disruption of a star by a massive black hole 
    Andreoni, Igor; Coughlin, Michael W; Perley, Daniel A; Yao, Yuhan; Lu, Wenbin; Bradley Cenko, S; Kumar, Harsh; Anand, Shreya; Ho, Anna Y. Q; Kasliwal, Mansi M; de Ugarte Postigo, Antonio; Sagues-Carracedo, Ana; Schulze, Steve; Alexander Kann, D; Kulkarni, S. R; Sollerman, Jesper; Tanvir, Nial; Rest, Armin; Izzo, Luca; Somalwar, Jean J; Kaplan, David L; Ahumada, Tomas; Anupama, G. C; Auchettl, Katie; Barway, Sudhanshu; Bellm, Eric C; Bhalerao, Varun; Bloom, Joshua S; Bremer, Michael; Bulla, Mattia; Burns, Eric; Campana, Sergio; Chandra, Poonam; Charalampopoulos, Panos; Cooke, Jeff; D’Elia, Valerio; Das, Kaustav Kashyap; Dobie, Dougal; Fernandez, Jose Feliciano Agui; Freeburn, James; Fremling, Cristoffer; Gezari, Suvi; Goode, Simon; Graham, Matthew J; Hammerstein, Erica; Karambelkar, Viraj R; Kilpatrick, Charles D; Kool, Erik C; Krips, Melanie; Laher, Russ R; Leloudas, Giorgos; Levan, Andrew; Lundquist, Michael J; Mahabal, Ashish A; Medford, Michael S; Coleman Miller, M; Moller, Anais; Mooley, Kunal P; Nayana, A. J; Nir, Guy; Pang, Peter T. H; Paraskeva, Emmy; Perley, Richard A; Petitpas, Glen; Pursiainen, Miika; Ravi, Vikram; Ridden-Harper, Ryan; Riddle, Reed; Rigault, Mickael; Rodriguez, Antonio C; Rusholme, Ben; Sharma, Yashvi; Smith, I. A; Stein, Robert D; Thone, Christina; Tohuvavohu, Aaron; Valdes, Frank; van Roestel, Jan; Vergani, Susanna D; Wang, Qinan; Zhang, Jielai (Springer Nature, 2022-12-15)
    Tidal disruption events (TDEs) are bursts of electromagnetic energy that are released when supermassive black holes at the centres of galaxies violently disrupt a star that passes too close1. TDEs provide a window through ...
  • The JCMT BISTRO Survey: A Spiral Magnetic Field in a Hub-filament Structure, Monoceros R2 
    Hwang, Jihye; Kim, Jongsoo; Pattle, Kate; Lee, Chang Won; Koch, Patrick M; Johnstone, Doug; Tomisaka, Kohji; Whitworth, Anthony; Furuya, Ray S; Kang, Ji-hyun; Lyo, A-Ran; Duan, Yan; Gu, Qilao; Law, Chi-Yan; Kobayashi, Masato I. N; Li, Dalei; Li, Di; Li, Guangxing; Li, Hua-bai; Liu, Tie; Lu, Xing; Chrysostomou, Antonio; Qian, Lei; Wang, Hongchi; Wu, Jintai; Xie, Jinjin; Nagata, Tetsuya; Yuan, Jinghua; Zhang, Chuan-Peng; Zhang, Guoyin; Zhang, Yapeng; Zhou, Jianjun; Debattista, Victor; Zhu, Lei; Berry, David; Friberg, Per; Graves, Sarah; Liu, Junhao; Nakamura, Fumitaka; Mairs, Steve; Parsons, Harriet; Rawlings, Mark; Doi, Yasuo; Eden, David; Hayashi, Saeko; Hull, Charles L. H; Inoue, Tsuyoshi; Inutsuka, Shu-ichiro; Iwasaki, Kazunari; Kataoka, Akimasa; Nakanishi, Hiroyuki; Pyo, Tae-Soo; Saito, Hiro; Seta, Masumichi; Park, Geumsook; Shimajiri, Yoshito; Chung, Eun Jung; Shinnaga, Hiroko; Tsukamoto, Yusuke; Zenko, Tetsuya; Chen, Huei-Ru Vivien; Duan, Hao-Yuan; Fanciullo, Lapo; Kemper, Francisca; Lee, Chin-Fei; Eyres, Stewart; Lin, Sheng-Jun; Liu, Sheng-Yuan; Arzoumanian, Doris; Ohashi, Nagayoshi; Rao, Ramprasad; Tang, Ya-Wen; Wang, Jia-Wei; Yang, Meng-Zhe; Yen, Hsi-Wei; Bourke, Tyler L; Falle, Sam; Fuller, Gary; Gledhill, Tim; Greaves, Jane; Griffin, Matt; Choi, Minho; Hatchell, Jennifer; Karoly, Janik; Kirk, Jason; Konyves, Vera; Kwon, Woojin; Longmore, Steven; van Loo, Sven; de Looze, Ilse; Peretto, Nicolas; Priestley, Felix; Choi, Youngwoo; Rawlings, Jonathan; Retter, Brendan; Richer, John; Rigby, Andrew; Savini, Giorgio; Kim, Shinyoung; Scaife, Anna; Viti, Serena; Diep, Pham Ngoc; Ngoc, Nguyen Bich; Choi, Yunhee; Tram, Le Ngoc; Andre, Philippe; Coude, Simon; Dowell, C. Darren; Friesen, Rachel; Robitaille, Jean-Francois; Tamura, Motohide; Kwon, Jungmi; Archana, Soam; Han, Ilseung; Jeong, Il-Gyo; Hoang, Thiem; Kim, Kyoung Hee; Onaka, Takashi; Eswaraiah, Chakali; Ward-Thompson, Derek; Liu, Hong-Li; Tang, Xindi; Chen, Wen Ping; Matsumura, Masafumi; Hoang, Thuong Duc; Kang, Miju; Chen, Zhiwei; Le Gouellec, Valentin J. M; Kirchschlager, Florian; Poidevin, Frederick; Bastien, Pierre; Qiu, Keping; Hasegawa, Tetsuo; Lai, Shih-Ping; Byun, Do-Young; Cho, Jungyeon; Kim, Hyosung; Kim, Kee-Tae; Lee, Jeong-Eun; Lee, Sang-Sung; Lee, Yong-Hee; Kawabata, Koji; Lee, Hyeseung; Kim, Mi-Ryang; Yoo, Hyunju; Yun, Hyeong-Sik; Chen, Mike; Di Francesco, James; Fiege, Jason; Fissel, Laura M; Franzmann, Erica; Houde, Martin; Kim, Gwanjeong; Lacaille, Kevin; Matthews, Brenda; Sadavoy, Sarah; Moriarty-Schieven, Gerald; Tahani, Mehrnoosh; Ching, Tao-Chung; Dai, Y. Sophia (American Astronomical Society, 2022-12-10)
    We present and analyze observations of polarized dust emission at 850 μm toward the central 1 × 1 pc hubfilament structure of Monoceros R2 (Mon R2). The data are obtained with SCUBA-2/POL-2 on the James Clerk Maxwell ...
  • The Role of Filamentary Structures in the Formation of Two Dense Cores, L1544 and L694-2 
    Kim, Shinyoung; Lee, Chang Won; Tafalla, Mario; Maheswar, G; Caselli, Paola; Myers, Philip C; Chung, Eun Jung; Li, Shanghuo (American Astronomical Society, 2022-12-01)
    We present mapping results of two prestellar cores, L1544 and L694-2, embedded in filamentary clouds in C18O (3–2), 13CO (3–2), 12CO (3–2), HCO+ (4–3), and H13CO+ (4–3) lines with the James Clerk Maxwell Telescope to examine ...
  • X-ray spectral and timing analysis of the Compton Thick Seyfert 2 galaxy NGC 1068 
    Pal, Indrani; Stalin, C. S; Parker, M. L; Agrawal, Vivek K; Marchesi, S (Oxford University Press on behalf of Royal Astronomical Society, 2022-12)
    We present the timing and spectral analysis of the Compton Thick Seyfert 2 active galactic nuclei NGC 1068 observed using NuSTAR and XMM–Newton. In this work for the first time we calculated the coronal temperature (⁠kTekTe⁠) ...
  • Study of correlation between optical flux and polarization variations in BL Lac objects 
    Rajput, Bhoomika; Pandey, Ashwani; Stalin, C. S; Mathew, Blesson (Oxford University Press on behalf of Royal Astronomical Society, 2022-12)
    Polarized radiation from blazars is one key piece of evidence for synchrotron radiation at low energy, which also shows variations. We present here our results on the correlation analysis between optical flux and polarization ...
  • A multiwavelength study of the flat-spectrum radio quasar NVSS J141922−083830 covering four flaring episodes 
    Buckley, D. A. H; Britto, R. J; Chandra, S; Krushinsky, V; Bottcher, M; Razzaque, S; Lipunov, V; Stalin, C. S; Gorbovskoy, E; Tiurina, N; Vlasenko, D; Kniazev, A (Oxford University Press on behalf of Royal Astronomical Society, 2022-12)
    We present multiwavelength observations and a model for flat-spectrum radio quasar (FSRQ) NVSS J141922−083830, originally classified as a blazar candidate of unknown type (BCU II object) in the Third Fermi-LAT AGN Catalog. ...

Search DSpace

Browse

My Account