Aryabhatta Research Institute of Observational Sciences: Recent submissions

  • Understanding Sources and Composition of Black Carbon and PM2.5 in Urban Environments in East India 
    Ambade, Balram, et.al.; Dumka, Umesh Chandra (Urban Science, 2022-09)
    Black carbon (BC) and PM2.5 chemical characterizations are crucial for insight into their impact on the health of the exposed population. PM2.5 sampling was carried out over selected residential sites of Jamshedpur (JSR) ...
  • Relationship between Lightning and Aerosol Optical Depth over the Uttarakhand Region in India: Thermodynamic Perspective 
    Gautam, Alok Sagar, et.al.; Dumka, Umesh Chandra (Urban Science, 2022-12)
    The current study is mainly focused on the monthly variation in the lightning flash rate (LFR) and related thermodynamic parameters using the data for the years 2000–2013, and the trend of lightning variation is explored. ...
  • A global look into the world of interacting supernovae 
    Gangopadhyay, Anjasha; Misra, Kuntal, et.al.; Kawabata, Koji S; Dastidar, Raya; Singh, Mridweeka (Journal Astrophysical Astronomy, 2022-12)
    Interacting supernovae (SNe) IIn and Ibn show narrow emission lines and have always been a mysterious and unsolved genre in SNe physics. We present a comprehensive analysis of the temporal and spectroscopic behavior of ...
  • Modeling the late-time merger ejecta emission in short gamma ray bursts 
    Ghosh, Ankur; Misra, Kuntal, et.al.; Omar, Amitesh; Panchal, Dimple (Journal Astrophysical Astronomy, 2022-12)
    The short gamma ray bursts (GRBs) are the aftermath of the merger of binary compact objects (neutron star–neutron star or neutron star–black hole systems). With the simultaneous detection of gravi tational wave (GW) signal ...
  • BL Lac object OJ 287: exploring a complete spectrum of issues concerning relativistic jets and accretion 
    Kushwaha, Pankaj (Journal Astrophysical Astronomy, 2022-11)
    BL Lacertae (BL Lac) object OJ 287 is one of the most dynamic blazars across the directly accessible observational windows: spectral, timing, polarization and imaging. Apart from behaviors, considered the characteristics ...
  • Photometric studies on the host galaxies of gamma-ray bursts using 3.6m Devasthal optical telescope 
    Gupta, Rahul; Pandey, Shashi Bhushan; Kumar, Amit; Ror, Amit Kumar; Aryan, Amar; Shrama, Saurabh; Misra, Kuntal; Castro- Tirado, A. J.; Tiwari, S.N. (Journal Astrophysical Astronomy, 2022-12)
    In this paper, we present multi-band photometric observations and analysis of the host galaxies for a sample of five interesting gamma-ray bursts (GRBs) observed using the 3.6m Devasthal optical telescope (DOT) and the ...
  • India-TMT project—science instrumentation program 
    Sivarani, Thirupathi ,et.al.; Pandey, Shashi Bhushan; Pandey, J. C. (Journal Astrophysical Astronomy, 2022-12)
    The future of astronomy in the coming decades will be shaped by the upcoming three extremely large optical telescopes, the Thirty Meter Telescope (TMT), the Giant Magellan Telescope (GMT) and the European Large Telescope ...
  • Analyses of hydrogen-stripped core–collapse supernovae using MOSFiT and MESA-based tools 
    Aryan, Amar; Pandey, Shashi Bhushan; Kumar, Amit; Gupta, Rahul; Ror, Amit Kumar; Tripathi, Apara; Tiwari, S.N. (Journal Astrophysical Astronomy, 2022-12)
    In this work, we employ two publicly available analysis tools to study four hydrogen (H)–stripped core–collapse supernovae (CCSNe), namely, SN 2009jf, iPTF13bvn, SN 2015ap and SN 2016bau. We use the modular open-source ...
  • SWIFT J0503.7-2819: a nearly synchronous intermediate polar below the period gap? 
    Rawat, Nikita; Pandey, J. C.; Joshi, Arti; Scaringi, Simone; Yadava, Umesh (Monthly Notices of the Royal Astronomical Society, 2022-12)
    Based on the X-ray observations from XMM–Newton and Swift, and optical observations from Transiting Exoplanet Survey Satellite (TESS) and AAVSO, we present temporal and spectral properties of probable intermediate polar ...
  • SN 2016iyc: a Type IIb supernova arising from a low-mass progenitor 
    Aryan, Amar; Pandey, S. B. ,et.al.; Kumar, Amit; Gupta, Rahul; Ror, Amit Kumar (Monthly Notices of the Royal Astronomical Society, 2022-12)
    In this work, photometric and spectroscopic analyses of a very low-luminosity Type IIb supernova (SN) 2016iyc have been performed. SN 2016iyc lies near the faint end among the distribution of similar supernovae (SNe). ...
  • Optical studies of a bright Type Iax supernova SN 2020rea 
    Singh, Mridweeka et.al.; Misra, Kuntal; Ailawadhi, Bhavya (Monthly Notices of the Royal Astronomical Society, 2022-12)
    We present optical photometric and spectroscopic analysis of a Type Iax supernova (SN) 2020rea situated at the brighter luminosity end of Type Iax supernovae (SNe). The light curve decline rate of SN 2020rea is m15(g) = ...
  • A nearby long gamma-ray burst from a merger of compact objects 
    Troja, E. ,et.al.; Kumar, A.; Gupta, R.; Aryan, Amar; Misra, Kuntal; Pandey, Shashi Bhushan (Nature, 2022-12)
    Gamma-ray bursts (GRBs) are flashes of high-energy radiation arising from energetic cosmic explosions. Bursts of long (greater than two seconds) duration are produced by the core-collapse of massive stars1, and those of ...
  • Swift and XMM–Newton observations of an RS CVn-type eclipsing binary SZ Psc: superflare and coronal properties 
    Karmakar, Subhajeet; Naik, Sachindra; Pandey, Jeewan C.; Savanov, Igor S. (Monthly Notices of the Royal Astronomical Society, 2023-01)
    We present an in-depth study of a large and long duration (>1.3 d) X-ray flare observed on an RS CVn-type eclipsing binary system SZ Psc using observations from Swift observatory. In the 0.35–10 keV energy band, the peak ...
  • Intranight optical variability of low-mass active galactic nuclei: a pointer to blazar-like activity 
    Krishna, Gopal, et.al.; Chand, Krishan (Monthly Notices of the Royal Astronomical Society Letters, 2023-01)
    This study aims to characterize, for the first time, intranight optical variability (INOV) of low-mass active galactic nuclei (LMAGNs) which host a black hole (BH) of mass MBH ∼ 106M , i.e. even less massive than the ...
  • A Gaia based analysis of open cluster Berkeley 27 
    Sariya, Devesh P.,et.al.; Yadav, R.K. S. (New Astronomy, 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 ...
  • Peculiar temporal and spectral features in highly obscured HMXB pulsar IGR J16320-4751 using XMM-Newton 
    Varun; Iyer, Nirmal; Paul, Biswajit (New Astronomy, 2023-01)
    IGR J16320-4751 is a highly obscured HMXB source containing a very slow neutron star (𝑃𝑠𝑝𝑖𝑛 ∼ 1300 sec) orbiting its supergiant companion star with a period of ∼9 days. It shows high column density (𝑁𝐻 ∼ 2 − 5 ...
  • Classification of MODIS fire emission data based on aerosol absorption Angstrom exponent retrieved from AERONET data 
    Ningombam, Shantikumar S. ,et.al.; Dumka, Umesh Chandra (Science of the Total Environment, 2023-02)
    Biomass burning emits a large quantity of gaseous pollutants and aerosols into the atmosphere, which perturbs the regional and global climate and has significant impacts on air quality and human health. In order to ...
  • Study of aerosol anomaly associated with large earthquakes (M > 6) 
    Ghosh, Soujan; Sasmal, Sudipta; Naja, Manish; Potirakis, Stelios; Hayakawa, Masashi (Advances in Space Research, 2023-01)
    We present the variation of unusual atmospheric phenomena, aerosols, to understand the preseismic irregularities for two major earthquakes in Japan. We consider aerosol optical depth and Angstrom exponent data retrieved ...
  • Photometric and spectroscopic analysis of the Type II SN 2020jfo with a short plateau 
    Ailawadhi, B. ,et.al.; Misra, K.; Ghosh, A.; Dimple; Jha, V. K.; Kumar, A.; Pandey, S. B. (Monthly Notices of the Royal Astronomical Society, 2023-02)
    We present high-cadence photometric and spectroscopic observations of SN 2020jfo in ultraviolet and optical/near-infrared bands starting from ∼3 to ∼434 d after the explosion, including the earliest data with the 10.4-m ...
  • Flux and spectral variability of Mrk 421 during its moderate activity state using NuSTAR: Possible accretion disc contribution? 
    Mondal, S.; Rani, P.; Stalin, C. S.; Chakrabarti, S. K.; Rakshit, S. (Astronomy & Astrophysics, 2022-06)
    The X-ray emission in BL Lac objects is believed to be dominated by synchrotron emission from their relativistic jets. However, when the jet emission is not strong, one could expect signatures of X-ray emission from inverse ...

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