Browsing Journal Articles by Title

Browsing Journal Articles by Title

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  • Sengupta, Anand (American Physical Society, 2016-02)
    On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from ...
  • Mandal, Subir; Pallamraju, Duggirala; Karan, Deepak K.; Phadke, Kedar A.; Singh, Ravindra P.; Suryawanshi, Pradip (Wiley, 2019-07)
    The importance of neutral wave dynamics in the understanding of the upper atmospheric processes is well?known. Conventionally, optical methods are used to derive information on the neutral wave dynamics by obtaining gravity ...
  • Pandey, Kuldeep; Sekar, R.; Anandarao, B. G.; Gupta, S. P.; Chakrabarty, D. (American Geophysical Union, 2018-03)
    Studies made earlier using ground-based observations of geomagnetic field over the Indian longitudes revealed that the occurrence of equatorial counter electrojet (CEJ) events in afternoon hours is more frequent during ...
  • Mishra, Akash; Chakraborty, Sumanta; Ghosh, Avirup; Sarkar, Sudipta (Springer, 2018-09)
    Physical process version of the first law of black hole mechanics relates the change in entropy of a perturbed Killing horizon, between two asymptotic cross sections, to the matter flow into the horizon. Here, we study the ...
  • Sengupta, Anand (IOP Publishing, 2017-12)
    On 2017 August 17 the merger of two compact objects with masses consistent with two neutron stars was discovered through gravitational-wave (GW170817), gamma-ray (GRB 170817A), and optical (SSS17a/AT 2017gfo) observations. ...
  • Kaur, Navpreet; Sameer; Kiran, S. Baliyan; Ganesh, Shashikiran (Oxford University Press Journals, 2017-05)
    We present results based on the observations of the blazar 3C 66A from 2005 November 06 to 2016 February 14 in the BVR and I broad-bands using the 1.2-m telescope of the Mt Abu InfraRed Observatory (MIRO). The source was ...
  • Jamal, Mohammad Yousuf; Mitra, Sukanya; Chandra, Vinod (IOP Publishing, 2019-08)
    The present investigation involves explorations on the chromo-dielectric properties of the hot QCD medium produced in relativistic heavy-ion collisions in terms of refractive index. The isotropic/equilibrium modelling is ...
  • Kaur, Navpreet; Baliyan, Kiran S.; Chandra, S.; Sameer; Ganesh, Shashikiran (American Astronomical Society, 2018-07)
    With an aim to explore optical variability at diverse timescales in BL Lac source S5 0716+714, it was observed for 46 nights during 2013 January 14 to 2015 June 01 when it underwent two major outbursts. The observations ...
  • Suthar, Kuldeep; Angom, D. (American Physical Society, 2016-06)
    We explore the collective excitation of two-species Bose-Einstein condensates (TBECs) confined in quasi-two-dimensional optical lattices. For this we use a set of coupled discrete nonlinear Schrödinger equations to describe ...
  • Sharma, Varun; Suddapalli, Chaitanya Kumar; Samanta, Goutam K.; Ebrahim-Zadeh, M. (Optical Society of America, 2018-06)
  • Mishra, Akash K.; Sarkar, Sudipta (American Physical Society, 2019-07)
    We study the generalization of the gedanken experiment of overcharging an extremal black hole proposed by Wald in the context of a multi-black-hole solution. In particular, we attempt to overcharge a system of two extremal ...
  • Jana, Soumya; Shaikh, Rajibul; Sarkar, Sudipta (American Physical Society, 2018-12)
    The Eddington-inspired Born-Infeld (EiBI) gravity is a modification of the theory of general relativity inspired by the nonlinear Born-Infeld electrodynamics. The theory is described by a series of higher-curvature terms ...
  • Lal, Nijil; Chithrabhanu, P.; Gangi Reddy, Salla; Anwar, Ali; Aadhi, A.; Singh, R. P. (Optical Society of America, 2016)
    We generate the non-separable state of polarization and orbital angular momentum using a laser beam. The generated state undergoes a cyclic polarization evolution which introduces a Pancharatnam geometric phase to the ...
  • Majumder, Barun; Farag Ali, Ahmed; Gubitosi, Giulia; Faizal, Mir (Hindawi Publishing Corporation, 2017-01)
  • Ghosh, Snigdha; Ghosh, Sabyasachi; Bhattacharyya, Sumana (American Physical Society (AIP), 2018-10)
    We explore some phenomenological issues during calculations of transport coefficients for hadronic matter, produced in the experiments of heavy ion collisions. Here, we use an ideal hadron resonance gas model to demonstrate ...
  • Nath, Newton; Ghosh, Monojit; Goswami, Srubabati; Gupta, Shivani (Springer Verlag, 2017-03)
    We study the zero textures of the Yukawa matrices in the minimal extended type-I seesaw (MES) model which can give rise to ∼ eV scale sterile neutrinos. In this model, three right handed neutrinos and one extra singlet S ...
  • Bhattacharjee, Srijit; Sarkar, Sudipta (American Physical Society, 2015-01)
    We study the perturbation induced by a slowly rotating massive object as it passes through a Rindler horizon. It is shown that the passage of this object can be approximately modeled as delta function type tidal distortions ...
  • Masoodia, Ather; Sengupta, Anand; Khana, Fareed A.; Sharma, Gyan P. (Elsevier, 2013-08)
    Alligator weed (Alternanthera philoxeroides) is an amphibious weed invading worldwide. It was reported very recently from Wular lake, a Ramsar site in India. The weed forms isolated floating islands of variable sizes in ...
  • Bhatt, Jitesh R.; Pandey, Arun Kumar (American Physical Society, 2016-08)
    We study the generation of a magnetic field in primordial plasma of standard model particles at a temperature T>80  TeV—much higher than the electroweak scale. It is assumed that there is an excess number of right-handed ...
  • Singh, Balbeer; Bhatt, Jitesh R.; Mishra, Hiranmaya (American Physical Society, 2019-07)
    We study the effect of vorticity present in heavy ion collisions (HICs) on the temperature evolution of hot quark gluon plasma in the presence of spin-vorticity coupling. The initial global rotation entails a nontrivial ...

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