Aryabhatta Research Institute of Observational Sciences: Recent submissions

  • Investigating kinematics and dynamics of three open clusters towards Galactic anticentre 
    Rangwal, Geeta; Yadav, R. K. S.; Bisht, D.; Durgapal, Alok; Sariya, Devesh P. (Monthly Notices of the Royal Astronomical Society, 2023-08)
    We present the intracluster kinematics and dynamics of three open clusters: NGC 1193, NGC 2355, and King 12 by incorporating kinematical and photometric data from Gaia DR3, as well as a ground-based telescope. After ...
  • NuSTAR investigation of X-ray variability and hard X-ray spectral properties in IGR J16320−4751 and IGR J16479−4514 
    Varun; Raman, Gayathri (Monthly Notices of the Royal Astronomical Society, 2023-08)
    We present the results obtained from a comprehensive timing and spectral study of two high mass X-ray binary sources using NuSTAR observations. These two sources, IGR J16320–4751 and IGR J16479–4514 were discovered by ...
  • Intranight optical variability of TeV blazars with parsec-scale jets dominated by slow-moving radio knots 
    Negi, Vibhore; Krishna, Gopal; Chand, Hum; Britzen, Silke (Monthly Notices of the Royal Astronomical Society, 2023-09)
    BL Lac objects detected at TeV energies preferentially belong to the subclass called ‘high-frequency-peaked’ BL Lacs (HBLs). Parsec-scale radio jetsin these TeV-HBLs often show dominant,slow-moving radio knotsthat are at ...
  • ARIES 130-cm Devasthal Fast Optical Telescope — Operation and Outcome 
    Joshi, Y. C.; Bangia, T.; Jaiswar, M. K.; Pant, J.; Reddy, K.; Yadav, S. (Journal of Astronomical Instrumentation, 2022-12)
    This paper studies about the 130-cm Devasthal Fast Optical Telescope (DFOT) at Devasthal, India that has been in operation for more than 10 years and is the main workhorse for the photometric observations for a wide range ...
  • First Lunar Occultation Results with the TIRCAM2 Near-Infrared Imager at the Devasthal 3.6-m Telescope 
    Sharma, Saurabh, et.al; Kumar, Brajesh; Rawat, Jeewan; Bora, Darshan S.; Belwal, Kuldeep; Dhami, Prakash; Bisht, Mohit (Journal of Astronomical Instrumentation, 2022-12)
    TIRCAM2 is the facility near-infrared Imager at the Devasthal 3.6-m telescope in northern India, equipped with an Aladdin III InSb array detector. We have pioneered the use of TIRCAM2 for very fast photometry, with the ...
  • First Light Preparations of the 4 m ILMT 
    Kumar, Brajesh; Kumar, Hitesh; Dangwal, Khushal Singh; Rawat, Himanshu; Misra, Kuntal; Negi, Vibhore; Jaiswar, Mukesh Kumar; Dukiya, Naveen; Ailawadhi, Bhavya (Journal of Astronomical Instrumentation, 2022-12)
    The 4 m International Liquid Mirror Telescope (ILMT) is a zenith-pointing optical observing facility at ARIES Devasthal observatory (Uttarakhand, India). The ¯rst light preparatory activities of the ILMT were accomplished ...
  • Long-Term Trends in Black Carbon and Aerosol Optical Depth Over the Central Himalayas: Potential Causes and Implications 
    Joshi, Hema; Naja, Manish; Srivastava, Priyanka; Gupta, Tarun; Gogoi, Mukunda M.; Babu, S. Suresh (Frontiers in Earth Science, 2022-06)
    Continuous ground-based observations of aerosols over the Himalayan region are highly beneficial in studying aerosol trends over the complex geographic terrain. This study presents the results from continuous long-term ...
  • Characterization and Performance of the 4k 4k CCD Camera Mounted on 104-cm Sampurnanand Telescope 
    Yadav, R. K. S.; Jaiswal, Aditya; Dattatrey, Arvind K.; Yadav, Shobhit; Nanjappa, Nandish; Panwar, Neelam; Jaiswar, Mukesh Kumar; Reddey, Krishna; Pant, Jayshreekar; Medhi, Biman J. (Journal of Astronomical Instrumentation, 2022-12)
    In this paper, we present the instrumental characterization and performance of the 4k 4k CCD detector mounted on a 104-cm Sampurnanand telescope located at ARIES, Manora Peak Nainital, India. A detailed description of ...
  • High-precision photometric and high-resolution spectroscopic characterization of HD 180347 
    Trust, Otto; Mashonkina, Lyudmila; Jurua, Edward; Cat, Peter De; Tsymbal, Vadim; Joshi, Santosh (Monthly Notices of the Royal Astronomical Society, 2023-09)
    We report the analysis of high-precision space-based photometric and high-resolution spectroscopic observations of HD 180347. The high-quality light curves from the Transiting Exoplanet Survey Satellite (TESS) under sectors ...
  • Seasonal Characteristics, Sources and Pollution Pathways of PM10 at High Altitudes Himalayas of India 
    Choudhary, Nikki; Srivastava, Priyanka; Dutta, Monami; Mukherjee, Sauryadeep; Rai, Akansha; Kuniyal, Jagdish Chandra; Lata, Renu; Chatterjee, Abhijit; Naja, Manish; Vijayan, Narayanasamy; Mandal, Tuhin Kumar; Sharma, Sudhir Kumar (Aerosol and Air Quality Research, 2022-07)
    The present study represents the annual and seasonal concentration of PM10 over different sites (Darjeeling, Nainital, Mohal-Kullu) across the Himalayan region of India from July 2018 to December 2019. The collected ...
  • A high-latitude coronal mass ejection observed by a constellation of coronagraphs: Solar Orbiter/Metis, STEREO-A/COR2, and SOHO/LASCO 
    Zimbardo, G. ,et.al.; Banerjee, D. (Astronomy & Astrophysics, 2023-08)
    A few days before the first perihelion of the Solar Orbiter nominal mission, which occurred on 2022 March 26, the Metis coronagraph on board Solar Orbiter detected a coronal mass ejection (CME) that was moving away from ...
  • Multiwavelength Temporal Variability of the Blazar PKS 1510–089 
    Yuan, Q.; Kushwaha, Pankaj; Gupta, Alok C.; Tripathi, Ashutosh; Wiita, Paul J.; Zhang, M.; Liu, X.; Lähteenmäki, Anne; Tornikoski, Merja; Tammi, Joni; Ramakrishnan, Venkatessh; Cui, L.; Wang, X.; Gu, M. F.; Bambi, Cosimo; Volvach, A. E. (The Astrophysical Journal, 2023-08)
    We perform correlation and periodicity search analyses on long-term multiband light curves of the flat-spectrum radio quasar PKS 1510−089 observed by the space-based Fermi-Large Area Telescope in γ-rays, the SMARTS and ...
  • The Role of High-frequency Transverse Oscillations in Coronal Heating 
    Lim, Daye; Doorsselaere, Tom Van; Berghmans, David; Morton, Richard J.; Pant, Vaibhav; Mandal, Sudip (Astrophysical Journal Letters, 2023-07)
    Transverse oscillations that do not show significant damping in solar coronal loops are found to be ubiquitous. Recently, the discovery of high-frequency transverse oscillations in small-scale loops has been accelerated ...
  • Very high particulate pollution over northwest India captured by a high‑density in situ sensor network 
    Singh, Tanbir, et.al.; Singh, Narendra (Springer Nature, 2023-08)
    Exposure to particulate matter less than 2.5 µm in diameter (PM2.5) is a cause of concern in cities and major emission regions of northern India. An intensive field campaign involving the states of Punjab, Haryana and Delhi ...
  • Interpreting the GeV-TeV gamma-ray spectra of local giant molecular clouds using GEANT4 simulation 
    Roy, Abhijit; Joshi, Jagdish C.; Cardillo, Martina; Sarkar, Ritabrata (Journal of Cosmology and Astroparticle Physics, 2023-08)
    Recently, the Fermi-LAT gamma-ray satellite has detected six Giant Molecular Clouds (GMCs) located in the Gould Belt and the Aquila Rift regions. In half of these objects (Taurus, Orion A, Orion B), the observed gamma-ray ...
  • The Seoul National University AGN Monitoring Project. IV. Hα Reverberation Mapping of Six AGNs and the Hα Size–Luminosity Relation 
    Cho, Hojin ,et.al.; Rakshit, Suvendu (2023-08)
    The broad-line region (BLR) size–luminosity relation has paramount importance for estimating the mass of black holes in active galactic nuclei (AGNs). Traditionally, the size of the Hβ BLR is often estimated from the ...
  • Observational Properties of a Bright Type lax SN 2018cni and a Faint Type Iax SN 2020kyg 
    Singh, Mridweeka et.al.; Misra, Kuntal (The Astrophysical Journal, 2023-08)
    We present the optical photometric and spectroscopic analysis of two Type Iax supernovae (SNe), 2018cni and 2020kyg. SN 2018cni is a bright Type Iax SN (MV,peak = −17.81 ± 0.21 mag), whereas SN 2020kyg (MV,peak = −14.52 ...
  • Exploring Stellar Cluster and Feedback-driven Star Formation in the Galactic Mid infrared Bubble [HKS2019] E70 
    Verma, Aayushi; Sharma, Saurabh; Mallick, Kshitiz K.; Dewangan, Lokesh; Ojha, Devendra K.; Yadav, Ram Kesh; Pandey, Rakesh; Ghosh, Arpan; Kaur, Harmeen; Panwar, Neelam; Chand, Tarak (The Astrophysical Journal, 2023-08)
    We present a comprehensive analysis of the Galactic mid-infrared bubble [HKS2019] E70 (E70) by adopting a multiwavelength approach to understand the physical environment and star formation scenario around it. We identified ...
  • Post-outburst Evolution of Bona Fide FU Ori-type V2493 Cygnus: A Spectro photometric Monitoring 
    Ghosh, Arpan; Sharma, Saurabh; Ninan, Joe P.; Ojha, Devendra K.; Bhatt, Bhuwan C.; Sahu, D. K.; Baug, Tapas; Yadav, R. K.; Irawati, Puji; Gour, A. S.; Panwar, Neelam; Pandey, Rakesh; Sinha, Tirthendu (The Astrophysical Journal, 2023-09)
    We present here the results of 8 yr of our near-simultaneous optical–near-infrared spectro-photometric monitoring of the bona fide FU Ori (FUor)-type candidate V2493 Cygnus (V2493 Cyg) starting from 2013 September to ...
  • SN 2018gj: A Short Plateau Type II Supernova with Persistent Blueshifted Ha Emission 
    Teja, Rishabh Singh; Singh, Avinash; Sahu, D. K.; Anupama, G. C.; Kumar, Brajesh; Nakaoka, Tatsuya; Kawabata, Koji S; Yamanaka, Masayuki; Takey, Ali; Kawabata, Miho (The Astrophysical Journal, 2023-09)
    We present an extensive, panchromatic photometric (UV, optical, and near-IR) and low-resolution optical spectroscopic coverage of a Type IIP supernova SN 2018gj that occurred on the outskirts of the host galaxy NGC 6217. ...

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