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E-print Articles: Recent submissions

  • Prospects for localization of gravitational wave transients by the advanced LIGO and advanced virgo Observatories 
    Sengupta, Anand (arXiv, Cornell University Library, 2013-04)
    We present a possible observing scenario for the Advanced LIGO and Advanced Virgo gravitational wave detectors over the next decade, with the intention of providing information to the astronomy community to facilitate ...
  • Naked Singularities are not Singular in Distorted Gravity 
    Majumder, Barun; Garattini, Remo (arXiv, Cornell University Library, 2013-11)
    We compute the Zero Point Energy (ZPE) induced by a naked singularity with the help of a reformulation of the Wheeler-DeWitt equation. A variational approach is used for the calculation with Gaussian Trial Wave Functionals. ...
  • Electric Charges and Magnetic Monopoles in Gravity's Rainbow 
    Garattini, Remo; Majumder, Barun (arXiv, Cornell University Library, 2013-05)
    In this work, we explore the possibility that quantum fluctuations induce an electric or magnetic charge or both, in the context of Gravity's Rainbow. A semi-classical approach is adopted, where the graviton one-loop ...
  • Implementation of an F-statistic all-sky search for continuous gravitational waves in Virgo VSR1 data 
    Sengupta, Anand (IOP Publishing, 2014-02)
    We present an implementation of the F-statistic to carry out the first search in data from the Virgo laser interferometric gravitational wave detector for periodic gravitational waves from a priori unknown, isolated rotating ...
  • The NINJA-2 project: Detecting and characterizing gravitational waveforms modelled using numerical binary black hole simulations 
    Sengupta, Anand (IOP Publishing, 2014-01)
    The Numerical INJection Analysis (NINJA) project is a collaborative e ort between members of the numerical relativity and gravitational-wave astrophysics communities. The purpose of NINJA is to study the ability to detect ...
  • Towards a Cosmology with Minimal Length and Maximal Energy 
    Majumder, Barun (arXiv, Cornell University Library, 2014-02)
    The Friedmann-Robertson-Walker (FRW) universe and Bianchi I,II universes are investigated in the framework of the generalized uncertainty principle (GUP) which predicts minimum measurable length as well as maximum measurable ...
  • Rotating scalar field and formation of Bose stars 
    Purohit, Kuldeep J.; Natwariya, Pravin Kumar; Bhatt, Jitesh R.; Mehta, Prashant K. (2021-09)
    We study numerical evolutions of an initial cloud of self-gravitating bosonic dark matter with finite angular momentum. It is demonstrated that the initial spinning scalar cloud can undergo a gravitational condensation to ...
  • DH type II radio bursts during solar cycles 23 and 24: frequency-dependent classification and their flare-CME associations 
    Patel, Binal D.; Joshi, Bhuwan; Cho, Kyung-Suk; Kim, Rok-Soon (Cornell University Library, 2021-08)
    We present the characteristics of DH type II bursts for the Solar Cycles 23 and 24. The bursts are classified according to their end frequencies into three categories, i.e. Low Frequency Group (LFG; 20 kHz ? f ? 200 kHz), ...
  • Background for the Self Consistent Renormalisation (SCR) theory 
    Devanarayanan, Bharathiganesh; Sharma, Akariti; Sheth, Alpesh; Jha, Prafulla K.; Singh, Navinder (Cornell University Library, 2021-08)
    A detailed review is given on the evolution of the theory of itinerant magnetism. The self-consistent renormalization (SCR) theory is quite successful in addressing the phenomenon of itinerant magnetism in weakly and nearly ...
  • Electromagnetic response of hot QCD medium in the presence of background time-varying fields 
    Gowthama K. K.; Kurian, Manu; Chandra, Vinod (Cornell University Library, 2021-07)
    The response of the hot QCD medium in the presence of external time dependent electromagnetic fields has been studied within the relativistic Boltzmann transport theory. The impact of the time dependence of the electromagnetic ...
  • Constraining spinning primordial black holes with global 21 cm signal 
    Natwariya, Pravin Kumar; Nayak, Alekha C.; Srivastava, Tripurari (Cornell University Library, 2021-07)
    Spin is a fundamental property of Primordial Black Holes, and it can substantially affect Primordial Black Holes (PBHs) evaporation rate. We consider the non-negligible spin of PBHs and study the bounds on the fraction of ...
  • Broadband X-ray observations of the 2018 outburst of the changing-look active Galactic nucleus NGC 1566 
    Jana, Arghajit; Kumari, Neeraj; Nandi, Prantik; Naik, Sachindra; Chatterjeee, Arka; Jaisawal, Gaurava K.; Hayasaki, Kimitake; Ricci, Claudio (Cornell University Library, 2021-07)
    We study the nature of the changing-look Active Galactic Nucleus NGC 1566 during its June 2018 outburst. During the outburst, the X-ray intensity of the source rises up to ~25-30 times compared to its quiescent state ...
  • Evidence of dark energy in different cosmological observations 
    Mazumdar, Arindam; Mohanty, Subhendra; Parashari, Priyank (Cornell University Library, 2021-07)
    The idea of a negative-pressure dark energy component in the Universe which causes an accelerated expansion in the late Universe has deep implications in models of field theory and general relativity. In this article, we ...
  • Charged Higgs Prospects In Extended Gauge Models 
    Coleppa, Baradhwaj; Krishna, Gokul B.; Sarkar, Agnivo (Cornell University Library, 2021-07)
    In this paper, we explore the collider phenomenology of the charged Higgs boson in the context of a generic Beyond Standard Model scenario with extended gauge and scalar sectors. In such scenarios, the charged Higgs boson ...
  • Experimental side channel analysis of BB84 QKD source 
    Biswas, Ayan; Banerji, Anindya; Chandravashi, Pooja; Kumar, Rupesh; Singh, Ravindra P. (Cornell University Library, 2021-06)
    A typical implementation of BB84 protocol for quantum communication uses four laser diodes for transmitting weak coherent pulses, which may not have the same characteristics. We have characterized these lasers for mismatch ...
  • Overcharging extremal black holes 
    Ghosh, Rajes; Mishra, Akash K.; Sarkar, Sudipta (Cornell University Library, 2021-06)
    The Weak Cosmic Censorship (WCC) conjecture can be used as a consistency criterion for any viable modification over general relativity (GR). We employ this idea to show that in contrast to the black holes in GR, it is ...
  • Light rings of stationary spacetimes 
    Ghosh, Rajes; Sarkar, Sudipta (Cornell University Library, 2021-07)
    We present a novel theorem regarding light rings in a stationary spacetime with an ergoregion. We prove that any stationary, axisymmetric, and asymptotically flat spacetime in 1 + 3 dimensions with an ergoregion must have ...
  • Causality constraints in quadratic gravity 
    Edelstein, Jose D.; Ghosh, Rajes; Laddha, Alok; Sarkar, Sudipta (Cornell University Library, 2021-07)
    Classifying consistent effective field theories for the gravitational interaction has recently been the subject of intense research. Demanding the absence of causality violation in high energy graviton scattering processes ...
  • Constraining extra dimensions using observations of black hole quasi-normal modes 
    Mishra, Akash K.; Ghosh, Abhirup; Chakraborty, Sumanta (Cornell University Library, 2021-06)
    The presence of extra dimensions generically modify the spacetime geometry of a rotating black hole, by adding an additional hair, besides the mass M and the angular momentum J, known as the 'tidal charge' parameter, ?. ...
  • Perfect proton selectivity in ion transport through two-dimensional crystals 
    Kalon, Gopinadhan et al. (2019-08)

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