Browsing E-print Articles by Title

Browsing E-print Articles by Title

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  • 21 cm line astronomy and constraining new physics 
    Natwariya, Pravin Kumar (Cornell University Library, 2023-01)
    The 21 cm signal appears to be a treasure trove to provide an insight into the period when the first generation of luminous objects formed in the Universe. Hydrogen is the predominating fraction of the total baryonic matter ...
  • The 2HDM doppelganger 
    Coleppa, Baradhwaj; Sarkar, Agnivo (Cornell University Library, 2020-11)
    We discuss the structure of a model with an extended gauge symmetry group SU(2)�SU(2)�U(1) with a correspondingly rich Electroweak Symmetry Breaking structure. In spite of the additional scalar degrees of freedom in the ...
  • 331 models and grand unification: from minimal SU(5) to minimal SU(6) 
    Deppisch, Frank F.; Hati, Chandan; Patra, Sudhanwa; Sarkar, Utpal; Valle, Jose W. F. (Cornell University Library, 2016-08)
    We consider the possibility of grand unification of the SU(3)c⊗SU(3)L⊗U(1)X model in an SU(6) gauge unification group. Two possibilities arise. Unlike other conventional grand unified theories, in SU(6) one can embed the ...
  • 750 GeV resonance in the dark left-right model 
    Dey, Ujjal Kumar; Mohanty, Subhendra; Tomar, Gaurav (Cornell University Library, 2015-12)
    We explain the 750 GeV diphoton resonance in the context of the dark left-right symmetric model. A global symmetry in this model, stabilizes the dark matter and ensures that the scalar couples only to gluons and photons. ...
  • Absence of an effective horizon for black holes in gravity's rainbow 
    Ali, Ahmed Farag; Faizal, Mir; Majumder, Barun (arXiv, Cornell University Library, 2014-06)
    We will argue that the divergence in time for the asymptotic observer occurs because of specifying the position of the Horizon beyond the Planck scale. In fact, a similar divergence in time will also occur for an in-going ...
  • Absorption variability of the highly obscured active galactic nucleus NGC 4507 
    Jana, Arghajit; Ricci, Claudio; Naik, Sachindra; Tanimoto, Atsushi; Kumari, Neeraj; Chang, Hsiang-Kuang; Nandi, Prantik; Chatterjee, Arka; Safi-Harb, Samar (Cornell University Library, 2022-03)
    We present a detailed study of the highly obscured active galaxy NGC 4507, performed using four Nuclear Spectroscopic Telescope Array (NuSTAR) observations carried out between May and August in 2015 (~ 130 ks in total). ...
  • Acceleration of solar energetic particles by the shock of interplanetary coronal mass ejection 
    Mondal, Shanwlee Sow; Sarkar, Aveek; Vaidya, Bhargav; Mignone, Andrea (Cornell University Library, 2021-10)
    Interplanetary Coronal Mass Ejection (ICME) shocks are known to accelerate particles and contribute significantly to Solar Energetic Particle (SEP) events. We have performed Magnetohydrodynamic-Particle in Cell (MHD-PIC) ...
  • Accretion properties of MAXI J1813-095 during its failed outburst in 2018 
    Jana, Arghajit; Jaisawal, Gaurava K.; Naik, Sachindra; Kumari, Neeraj; Chatterjee, Debjit; Chatterjee, Kaushik; Bhowmick, Riya; Chakrabarti, Sandip K.; Chang, Hsiang-Kuang; Debnath, Dipak (Cornell University Library, 2021-04)
    We present the results obtained from detailed timing and spectral studies of a black hole candidate MAXI~J1813-095 using (it Swift}, (it NICER), and (it NuSTAR) observations during its 2018 outburst. The timing behaviour ...
  • Acoustic radiation from vortex-barrier interaction in atomic Bose-Einstein condensate 
    Suthar, Kuldeep; Roy, Arko; Angom, D. (Cornell University Library, 2014-05)
    We examine the dynamics of a vortex dipole in the Bose-Einstein condensates (BECs) of trapped dilute atomic gases at zero temperature in the presence of a Gaussian barrier potential. The density-anisotropy induced by the ...
  • An all-sky search for long-duration gravitational wave transients with initial LIGO 
    Sengupta, Anand (Cornell University Library, 2015-11)
    We present the results of a search for long-duration gravitational wave transients in two sets of data collected by the LIGO Hanford and LIGO Livingston detectors between November 5, 2005 and September 30, 2007, and July ...
  • All-sky search for periodic gravitational waves in the O1 LIGO data 
    Sengupta, Anand (Cornell University Library, 2017-07)
    We report on an all-sky search for periodic gravitational waves in the frequency band 20-475 Hz and with a frequency time derivative in the range of [-1.0, +0.1]e-8 Hz/s. Such a signal could be produced by a nearby spinning ...
  • All-sky search for short gravitational-wave bursts in the first Advanced LIGO run 
    Sengupta, Anand (Cornell University Library, 2016-11)
    We present the results from an all-sky search for short-duration gravitational waves in the data of the first run of the Advanced LIGO detectors between September 2015 and January 2016. The search algorithms use minimal ...
  • Analytical study of gravitational lensing in Kerr-Newman black-bounce spacetime 
    Ghosh, Saptaswa; Bhattacharyya, Arpan (Cornell University Library, 2022-01)
    We investigate the equatorial deflection angle of light rays propagating in Kerr-Newman black-bounce spacetime. Furthermore, we analyze the light ray trajectories and derive a closed-form formula for deflection angle in ...
  • Application of a Hough search for continuous gravitational waves on data from the 5th LIGO science run 
    Sengupta, Anand (IOP Publishing, 2013-11)
    We report on an all-sky search for periodic gravitational waves in the frequency range 50−1000Hz with the first derivative of frequency in the range −8.9×10−10 Hz/s to zero in two years of data collected during LIGO's fifth ...
  • Asymmetric self-interacting dark matter via Dirac leptogenesis 
    Dutta, Manoranjan; Narendra, Nimmala; Sahu, Narendra; Shil, Sujay (Cornell University Library, 2022-02)
    The nature of neutrinos, whether Dirac or Majorana, is hitherto not known. Assuming that the neutrinos are Dirac, which needs B?L to be an exact symmetry, we make an attempt to explain the observed proportionality between ...
  • Asymmetries and observables for ?b??l+l- 
    Kumar, Girish; Mahajan, Namit (Cornell University Library, 2015-11)
    The semi-leptonic baryonic b→s decay, Λb→Λℓ+ℓ−, has been studied and new angular observables and asymmetries have been proposed which can test the presence of new physics beyond the standard model.
  • Automating the inclusion of subthreshold signal-to-noise ratios for rapid gravitational-wave localization 
    Reza, Amit et al. (Cornell University Library, 2020-11)
  • Autonomous dome for robotic telescope 
    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 ...
  • B-→D(*)TV- excesses in ALRSM constrained from B, D decays and D0 - D-0 mixing 
    Hati, Chandan; Kumar, Girish; Mahajan, Namit (Cornell University Library, 2015-11)
    Recent experimental results from the LHCb, BaBar and Belle collaborations on the semitauonic decays of B meson, \bar{B}\rightarrow D^{(\ast)}\tau \bar{\nu}, showing a significant deviation from the Standard Model (SM), ...
  • 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 ...

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