Aryabhatta Research Institute of Observational Sciences: Recent submissions

  • Age Distribution of Exoplanet Host Stars: Chemical and Kinematic Age Proxies from GAIA DR3 
    Swastik, C.; Banyal, Ravinder K.; Narang, Mayank; Unni, Athira; Banerjee, Bihan; Manoj, P.; Sivarani, T. (The Astronomical Journal, 2023-09)
    The GAIA space mission is impacting astronomy in many significant ways by providing a uniform, homogeneous, and precise data set for over 1 billion stars and other celestial objects in the Milky Way and beyond. ...
  • Far-ultraviolet to Near-infrared Observations of SN 2023ixf: A High-energy Explosion Engulfed in Complex Circumstellar Material 
    Teja, Rishabh Singh; Singh, Avinash; Basu, Judhajeet; Anupama, G. C.; Sahu, D. K.; Dutta, Anirban; Swain, Vishwajeet; Nakaoka, Tatsuya; Pathak, Utkarsh; Bhalerao, Varun; Barway, Sudhanshu; Kumar, Harsh; A. J, Nayana; Imazawa, Ryo; Kumar, Brajesh; Kawabata, Koji S. (Astrophysical Journal Letters, 2023-09)
    We present early-phase panchromatic photometric and spectroscopic coverage spanning the far-ultraviolet to near infrared regime of the nearest hydrogen-rich core-collapse supernova (SN) in the last 25 yr, SN 2023ixf. ...
  • Surface Radiative Forcing as a Climate-Change Indicator in North India due to the Combined Effects of Dust and Biomass Burning 
    Dumka, Umesh Chandra; Kosmopoulos, Panagiotis G.; Baxevanaki, Effrosyni; Kaskaoutis, Dimitris G.; Huda, Muhammad Nurul; Khan, Md Firoz; Bilal, Muhammad; Ambade, Balram; Khanal, Sujan; Munshi, Pavel (MDPI, 2023-09)
    This study estimates the radiative forcing by biomass burning and dust aerosols over the Indian subcontinent, with emphasis on the Indo-Gangetic Plains (IGP) during the period from January 2021 to April 2021, based on ...
  • Study of the energetic X-ray superflares from the active fast rotator AB doradus 
    Didel, Shweta; Pandey, Jeewan C.; Srivastava, A. K.; Singh, Gurpreet (Monthly Notices of the Royal Astronomical Society, 2024-01)
    We present the analyses of intense X-ray flares detected on the active fast rotator AB Dor using observations from the XMM– Newton. A total of 21 flares are detected, and 13 flares are analysed in detail. The total X-ray ...
  • TransitFit: combined multi-instrument exoplanet transit fitting for JWST, HST, and ground-based transmission spectroscopy studies 
    Hayes, J. J. C.; Priyadarshi, A.; Kerins, E.; Awiphan, S.; McDonald, I.; A-thano, N.; Morgan, J.S.; Humpage, A.; Charles, S.; Wright, M.; Joshi, Y. C.; Jiang, Ing-Guey; Inyanya, T.; Padjaroen, T.; Munsaket, P.; Chuanraksasat, P.; Komonjinda, S.; Kittara, P.; Dhillon, V. S.; Marsh, T. R.; Reichart, D. E.; Poshyachinda, S. (Monthly Notices of the Royal Astronomical Society, 2024-01)
    We present TRANSITFIT1, a package designed to fit exoplanetary transit light curves. TRANSITFIT offers multi-epoch, multi wavelength fitting of multi-telescope transit data. TRANSITFIT allows per-telescope detrending to ...
  • Optical intraday variability of the blazar S5 0716+714 
    Tripathi, Tushar; Gupta, Alok C.; Takey, Ali; Bachev, Rumen; Vince, Oliver; Strigachev, Anton; Kushwaha, Pankaj; Elhosseiny, E. G.; Wiita, Paul J.; Damljanovic, G.; Dhiman, Vinit; Fouad, A.; Gaur, Haritma; Gu, Minfeng; Hamed, G. E.; Kishore, Shubham; Kurtenkov, A.; Rastogi, Shantanu; Semkov, E.; Zead, I.; Zhang, Zhongli (Monthly Notices of the Royal Astronomical Society, 2024-01)
    We present an extensive recent multiband optical photometric observations of the blazar S5 0716+714 carried out over 53 nights with two telescopes in India, two in Bulgaria, one in Serbia, and one in Egypt during 2019 ...
  • Galactic ‘Snake’ IRDC G11.11−0.12: a site of multiple hub–filament systems and colliding filamentary clouds 
    Dewangan, L. K.; Bhadari, N. K.; Maity, A. K.; Eswaraiah, C.; Sharma, Saurabh; Jadhav, O. R. (Monthly Notices of the Royal Astronomical Society, 2024-01)
    To probe star formation processes, we present a multiscale and multiwavelength investigation of the ‘Snake’ nebula/infrared dark cloud G11.11−0.12 (hereafter, G11; length ∼27 pc). Spitzer images hint at the presence of ...
  • Multiband cross-correlated radio variability of the blazar 3C 279 
    Mohana A, Krishna; Gupta, Alok C.; Marscher, Alan P.; Sotnikova, Yulia V.; Jorstad, S. G.; Wiita, Paul J.; Cui, Lang; Aller, Margo F.; Aller, Hugh D.; Kovalev, Yu. A.; Kovalev, Y. Y.; Liu, Xiang; Mufakharov, T. V.; Popkov, A. V.; Mingaliev, M. G.; Erkenov, A. K.; Nizhelsky, N. A.; Tsybulev, P. G.; Tsybulev, P. G.; Zhao, Wei; Weaver, Z. R.; Morozova, D. A. (Monthly Notices of the Royal Astronomical Society, 2024-01)
    We present the results of our study of cross-correlations between long-term multiband observations of the radio variability of the blazar 3C 279. More than a decade (2008–2022) of radio data were collected at seven different ...
  • On the stability and pulsation in models of B[e] star MWC 137 
    Parida, Sugyan; Yadav, Abhay Pratap; Kraus, Michaela; Glatze, Wolfgang; Joshi, Yogesh Chandra; Joshi, Santosh (Monthly Notices of the Royal Astronomical Society, 2024-01)
    B[e] type stars are characterized by strong emission lines, photometric, and spectroscopic variabilities and unsteady mass-loss rates. MWC 137 is a galactic B[e] type star situated in the constellation Orion. Recent ...
  • Search for merger ejecta emission from late-time radio observations of short GRBs using GMRT 
    Ghosh, Ankur; Vaishnava, C. S.; Resmi, L.; Misra, Kuntal; Arun, K. G.; Omar, Amitesh; Chakradhari, N. K. (Monthly Notices of the Royal Astronomical Society, 2024-01)
    In some cases, the merger of two neutron stars can produce a rapidly rotating and highly magnetized millisecond magnetar. A significant proportion of the rotational energy deposited to the emerging ejecta can produce a ...
  • The Fibre Resolved OpticAl and Near-Ultraviolet Czerny–Turner Imaging Spectropolarimeter (FRANCIS) 
    Jess, David B.; Grant, Samuel D.T.; Bate, William; Liu, Jiajia; Jafarzadeh, Shahin; Keys, Peter H.; Vieira, Luís E.A.; Lago, Alisson Dal; Guarnieri, Fernando L.; Christian, Damian J.; Gilliam, Doug; Banerjee, Dipankar (Solar Physics, 2023-12)
    The solar physics community is entering a golden era that is ripe with next-generation ground- and space-based facilities, advanced spectral inversion techniques, and realistic simulations that are becoming more ...
  • Rapid Optical Flares in the Blazar OJ 287 on Intraday Timescales with TESS 
    Kishore, Shubham; Gupta, Alok C.; Wiita, Paul J. (The Astrophysical Journal, 2024-01)
    We have analyzed the optical light curves of the blazar OJ 287 obtained with the Transiting Exoplanet Survey Satellite over about 80 days from 2021 October 13 to December 31, with an unprecedented sampling of 2 ...
  • Multiband optical variability on diverse time-scales of the TeV blazar TXS 0506 + 056, the first cosmic neutrino source 
    Dhiman, Vinit; Gupta, Alok C.; Bachev, Rumen; Wiita, Paul J.; Cellone, Sergio A.; Strigachev, A.; Gaur, Haritma; Darriba, A.; Bisen, D. P.; Locatelli, G.; Mammana, L. A.; Semkov, E. (Monthly Notices of the Royal Astronomical Society, 2024-01)
    We report the first extensive optical flux and spectral variability study of the TeV blazar TXS 0506 + 056 on intranight to long-term time-scales using BVRI data collected over 220 nights between 2017 January 21 to 2022 ...
  • Structural analysis of open cluster Bochum 2 
    Kaur, Harmeen et.al; Shrama, Saurabh; Verma, Aayushi; Panwar, Neelam; Ghosh, Arpan (Journal Astrophysical Astronomy, 2023-06)
    We present the results from our deep optical photometric observations of Bochum 2 (Boc2) star cluster obtained using the 1.3-m Devasthal Fast Optical Telescope along with archival photometric data from Pan-STARRS2/2MASS/UKIDSS ...
  • TIRCAM2 camera interface on the side port of 3.6-m Devasthal Optical Telescope 
    Bhagat, Shailesh B.et.al; Reddy, B. Krishna; Nanjappa, Nadish; Bangia, Tarun; Shrama, Saurabh (Journal Astrophysical Astronomy, 2023-06)
    TIFR Near Infrared Imaging Camera-II (TIRCAM2) is being used at the 3.6-m Devasthal Optical Telescope (DOT) operated by Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, Uttarakhand, India. ...
  • Photometric and kinematic studies of open cluster NGC 1027 
    Tripathi, Apara; Panwar, Neelam; SHARMA, SAURABH; Kumar, Brijesh; Rastogi, Shantanu (Journal Astrophysical Astronomy, 2023-06)
    We present photometric and kinematic analyses of an intermediate-age open cluster NGC 1027 using UBV(R I)c and Gaia Early Data Release 3 (EDR3) data. Structural and fundamental parameters, such as cluster center, cluster ...
  • Quiescence of an outburst of a low-mass young stellar object: LDN1415-IRS 
    SINGH, KOSHVENDRA; OJHA, DEVENDRA K.; NINAN, JOE P.; SHARMA, SAURABH; GHOSH, SUPRIYO; GHOSH, ARPAN; BHATT, BHUWAN C.; SAHU, DEVENDRA K. (Journal Astrophysical Astronomy, 2023-06)
    LDN1415-IRS, a low-mass young stellar object (YSO), went into an outburst between 2001 and 2006, illuminating a surrounding nebula, LDN1415-Neb. LDN1415-Neb was found to have brightened by I = 3.77 mag by April 2006. The ...
  • Revisiting the Transit Timing and Atmosphere Characterization of the Neptune-mass Planet HAT-P-26 b 
    A-thano, Napaporn; Awiphan, Supachai; Jiang, Ing-Guey; Kerins, Eamonn; Priyadarshi, Akshay; McDonald, Iain; Joshi, Yogesh C.; Chulikorn, Thansuda; Hayes, Joshua J. C.; Charles, Stephen; Huang, Chung-Kai; Rattanamala, Ronnakrit; Yeh, Li-Chin; Dhillon, Vik S (The Astronomical Journal, 2023-12)
    We present a transit-timing variation (TTV) and planetary atmosphere analysis of the Neptune-mass planet HAT-P 26 b. We present a new set of 13 transit light curves from optical ground-based observations and combine ...
  • Investigating star-formation activity in Sh 2-61 H II region 
    PANDEY, RAKESH; SHARMA, SAURABH; DEWANGAN, LOKESH; VERMA, AAYUSHI; BAUG, TAPAS; KAUR, HARMEEN; GHOSH, ARPAN (Journal Astrophysical Astronomy, 2023-08)
    Using multi-wavelength data sets, we studied the star-formation activity in Hii region Sh 2-61 (hereafter S61). We identified a clustering in the region and estimated the membership using the Gaia proper motion data. The ...
  • Statistical analysis of dynamical evolution of open clusters 
    MAURYA, JAYANAND; JOSHI, Y. C.; SAMAL, MANASH RANJAN; RAWAT, VINEET; GOUR, ANUBHA SINGH (Journal Astrophysical Astronomy, 2023-07)
    We present the dynamical evolution of 10 open clusters, which were part of our previous studies. These clusters include both young and intermediate-age open clusters with ages ranging from 25 ± 19 Myr to 1.78 ± 0.20 Gyr. ...

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