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  • Sengupta, Anand (IOP Science, 2016-02)
    The discovery of the gravitational-wave (GW) source GW150914 with the Advanced LIGO detectors provides the first observational evidence for the existence of binary black hole (BH) systems that inspiral and merge within the ...
  • Kumar, Akash; Sengupta, Anand; Ganesh, Shashikiran (2015-02)
  • Kumar, Akash; Sengupta, Anand; Ganesh, Shashikiran (Cornell University Library, 2016-04)
    Physical Research Laboratory operates a 50cm robotic observatory at Mount Abu. This Automated Telescope for Variability Studies (ATVS) makes use of Remote Telescope System 2 (RTS2) for autonomous operations. The observatory ...
  • Kumar, Girish; Mahajan, Namit (American Physical Society, 2016-03)
    We calculate the zeros of angular observables P?4 and P?5 of the angular distribution of 4-body decay B?K?(?K?)l+l? where LHCb, in its analysis of form-factor independent angular observables, has found deviations from the ...
  • Hati, Chandan; Kumar, Girish; Mahajan, Namit (Springer Berlin Heidelberg, 2016-01)
    Recent experimental results from the LHCb, BaBar and Belle collaborations on the semitauonic decays of B meson, B¯¯¯¯→D(∗)τν¯¯¯, showing a significant deviation from the Standard Model (SM), hint towards a new physics ...
  • Das, Diganta; Kindra, Bharti; Kumar, Girish; Mahajan, Namit (American Physical Society, 2019-05)
    We study the rare decay B?K?2(1430)(?K?)?+?? in the Standard Model and beyond. Working in the transversity basis, we exploit the relations between the heavy-to-light form factors in the limit of heavy quark (mb??) and large ...
  • Bhatt, Jitesh R.; Natwariya, Pravin Kumar; Nayak, Alekha C.; Pandey, Arun Kumar (Springer, 2020-04)
    We have shown that in presence of a cosmic magnetic field the bounds on baryon dark matter cross-section (?^), dark-matter mass (md) and values of the magnetic field (B0) can strongly influence each other. This requires ...
  • Sengupta, Anand (Wiley-VCH Verlag, 2017-01)
    The first direct gravitational-wave detection was made by the Advanced Laser Interferometer Gravitational Wave Observatory on September 14, 2015. The GW150914 signal was strong enough to be apparent, without using any ...
  • Poswal, H. K.; Tripathi, Ravi; Garg, Nandini; Deo, M. N.; Sharma, Surinder M.; Ghalsasi, Pallavi (IOP Publishing, 2012)
    Recent discovery of colossal negative thermal expansion (NTE) behaviour in Silver Hexacyanocobaltate Ag3[Co(CN)6] has triggered interest among researchers to understand the basic mechanism causing such an unusual behaviour. ...
  • Ghalsasi, Pallavi; Poswal, H. K.; Tripathi, Ravi; Garg, Nandini; Deo, M. N.; Sharma, Surinder M. (IOP Publishing, 2012)
    Recent discovery of colossal negative thermal expansion (NTE) behaviour in Silver Hexacyanocobaltate Ag3[Co(CN)6] has triggered interest among researchers to understand the basic mechanism causing such an unusual behaviour. ...
  • Khanna, Sakshum; Marathey, Priyanka; Utsav; Chaliyawala, Harsh; Mukhopadhyay, Indrajit (AIP Publishing, 2018-05)
    We present the studies on the structural properties of monolayer Bidisperse silica (SiO2) nanoparticles (BDS) on Silicon (Si-100) substrate using spin coating technique. The Bidisperse silica nanoparticle was synthesised ...
  • Sengupta, Anand (American Physical Society, 2016-10)
    The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole mergers. In this paper, we present full results ...
  • Sengupta, Anand (American Astronomical Society, 2019-09)
    We present results on the mass, spin, and redshift distributions with phenomenological population models using the 10 binary black hole (BBH) mergers detected in the first and second observing runs completed by Advanced ...
  • Fairoos, C.; Ghosh, Avirup; Sarkar, Sudipta (American Physical Society, 2018-07)
    We study the entropy evolution of black holes in Lovelock gravity by formulating a thermodynamic generalization of the null Raychaudhuri equation. We show that the similarity between the expressions of entropy change of ...
  • Majumder, Barun (Springer Link, 2013-11)
    Here we study the effects of the Generalized Uncertainty Principle in the tunneling formalism for Hawking radiation to evaluate the quantum-corrected Hawking temperature and entropy for a Schwarzschild black hole. We compare ...
  • Sarkar, Sudipta (2013-03-03)
    The striking similarity of the laws of black hole mechanics with thermodynamics was first established in the case of general relativity (GR). But the Einstein-Hilbert Lagrangian of general relativity is only the lowest ...
  • Sarkar, Sudipta (Springer, 2019-05)
    Black holes have often provided profound insights into the nature of gravity and the structure of space�time. The study of the mathematical properties of black objects is a major research theme of contemporary theoretical ...
  • Mishra, Akash K.; Rahman, Mostafizur; Sarkar, Sudipta (IOP Publishing, 2018-06)
    Hawking's topology theorem in general relativity restricts the cross-section of the event horizon of a black hole in 3+1 dimension to be either spherical or toroidal. The toroidal case is ruled out by the topology censorship ...
  • Bai, Rukmani; Bandyopadhyay, Soumik; Pal, Sukla; Suthar, K.; Angom, D. (American Physical Society, 2018-08)
    Quantum Hall (QH) states of two-dimensional (2D) single-layer optical lattices are examined using the Bose-Hubbard model (BHM) in the presence of an artificial gauge field. We study the QH states of both the homogeneous ...
  • Fairoos, C.; Ghosh, Avirup; Sarkar, Sudipta (World Scientific, 2018-10)
    The evolution of the black-hole horizon can be effectively captured by a fictitious membrane fluid living on the stretched horizon. We show that the dynamics of this boundary matter arises from the invariance of the bulk ...

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