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Browsing by Author "Kumar, Brajesh"

Browsing by Author "Kumar, Brajesh"

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  • Light curve and spectral evolution of the Type IIb supernova 2011fu 
    Kumar, Brajesh; Pandey, S. B; Sahu, D. K; Vinko, J; Moskvitin, A. S; Anupama, G. C; Bhatt, V. K; Ordasi, A; Nagy, A; Sokolov, V. V; Sokolova, T. N; Komarova, V. N; Kumar, Brijesh; Bose, S; Roy, R; Sagar, R (Oxford University Press on behalf of the Royal Astronomical Society, 2013-05-01)
    We present the low-resolution spectroscopic and UBVRI broad-band photometric investigations of the Type IIb supernova (SN) 2011fu, discovered in UGC 01626. The photometric follow-up of this event was initiated a few days ...
  • MUSSES2020J: The Earliest Discovery of a Fast Blue Ultraluminous Transient at Redshift 1.063 
    Jiang, Ji-an; Yasuda, Naoki; Maeda, Keiichi; Tominaga, Nozomu; Doi, Mamoru; Ivezic, Zeljko; Yoachim, Peter; Uno, Kohki; Moriya, Takashi J; Kumar, Brajesh; Pan, Yen-Chen; Tanaka, Masayuki; Tanaka, Masaomi; Nomoto, Kenichi; Jha, Saurabh W; Ruiz-Lapuente, Pilar; Jones, David; Shigeyama, Toshikazu; Suzuki, Nao; Kokubo, Mitsuru; Furusawa, Hisanori; Miyazaki, Satoshi; Connolly, Andrew J; Sahu, D. K; Anupama, G. C (IOP Publishing, 2022-07-10)
    In this Letter, we report the discovery of an ultraluminous fast-evolving transient in rest-frame UV wavelengths, MUSSES2020J, soon after its occurrence by using the Hyper Suprime-Cam (HSC) mounted on the 8.2 m Subaru ...
  • On the propagation of gravity waves in the lower solar atmosphere in different magnetic configurations 
    Kumar, Hirdesh; Kumar, Brajesh; Rajaguru, S. P (Elsevier B.V, 2023-09-01)
    Gravity waves are generated by turbulent subsurface convection overshooting or penetrating locally into a stably stratified medium. While propagating energy upwards, their characteristic negative phase shift over height ...
  • Optical studies of two stripped envelope supernovae − SN 2015ap (Type Ib) and SN 2016P (Type Ic) 
    Gangopadhyay, A; Misra, K; Sahu, D. K; Wang, Shan-Qin; Kumar, Brajesh; Li, Long; Anupama, G. C; Dastidar, R; Elias-Rosa, N; Kumar, Brijesh; Singh, Mridweeka; Pandey, S. B; Sanwal, Pankaj; Singh, A; Srivastav, S; Tartaglia, L; Tomasella, L (Oxford University Press on behalf of the Royal Astronomical Society, 2020-09)
    We present the photometric and spectroscopic studies of a Type Ib SN 2015ap and a Type Ic SN 2016P. SN 2015ap is one of the bright (MV = −18.04 mag) Type Ib while SN 2016P lies at an average value among the Type Ic SNe (MV ...
  • 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 (American Astronomical Society, 2023-09-10)
    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. ...
  • SN 2020jfo: A Short-plateau Type II Supernova from a Low-mass Progenitor 
    Teja, Rishabh Singh; Singh, A; Sahu, D. K; Anupama, G. C; Kumar, Brajesh; Nayana, A. J (American Astronomical Society, 2022-05-01)
    We present spectroscopic and photometric observations of the Type IIP supernova, SN 2020jfo, in ultraviolet and optical wavelengths. SN 2020jfo occurred in the spiral galaxy M61 (NGC 4303), with eight observed supernovae ...
  • SN 2020sck: Deflagration in a Carbon-Oxygen White Dwarf 
    Dutta, Anirban; Sahu, D. K; Anupama, G. C; Joharle, Simran; Kumar, Brajesh; Nayana, A. J; Singh, Avinash; Kumar, Harsh; Bhalerao, Varun; Barway, Sudhanshu (American Astronomical Society, 2022-02-01)
    We present optical UBVRI photometry and low-to-medium resolution spectroscopic observations of type Iax supernova SN 2020sck spanning −5.5 days to +67 days from maximum light in the B-band. From the photometric analysis ...
  • A study of the propagation of magnetoacoustic waves in small-scale magnetic fields using solar photospheric and chromospheric Dopplergrams: HMI/SDO and MAST observations 
    Kumar, Hirdesh; Kumar, Brajesh; Rajaguru, S. P; Mathew, Shibu K; Bayanna, Ankala Raja (Elsevier, 2023-06)
    In this work, we present a study of the propagation of low-frequency magneto-acoustic waves into the solar chromosphere within small-scale inclined magnetic fields over a quiet-magnetic network region utilizing nearsimultaneous ...
  • Supernova 2012aw – a high-energy clone of archetypal Type IIP SN 1999em 
    Bose, Subhash; Kumar, Brijesh; Sutaria, F. K; Kumar, Brajesh; Roy, Rupak; Bhatt, V. K; Pandey, S. B; Chandola, H. C; Sagar, R; Misra, Kuntal; Chakraborti, Sayan (Oxford University Press, 2013-08-11)
    We present densely sampled UBVRI/griz photometric and low-resolution (6–10 Å) optical spectroscopic observations from 4 to 270 d after explosion of a newly discovered Type II SN 2012aw in a nearby (∼9.9 Mpc) galaxy M95. ...

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