Browsing Journal Articles by Title

Browsing Journal Articles by Title

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  • Apurv Chaitanya, N.; Chaitanya Kumar, S.; Aadhi, A.; Samanta, Goutam Kumar; Ebrahim-Zadeh, M. (Nature Publishing Group, 2016-08)
    We report on the first realization of an ultrafast Airy beam optical parametric oscillator (OPO). By introducing intracavity cubic phase modulation to the resonant Gaussian signal in a synchronously-pumped singly-resonant ...
  • Apurv Chaitanya, N.; Devi, Kavita; Samanta, Goutam Kumar; Ebrahim-Zadeh, M.; Suddapalli, Chaitanya Kumar D. (OSA Publishing, 2016-01)
    We report on the generation of ultrafast vortex beams in the deep ultraviolet (DUV) wavelength range at 266 nm, for the first time to our knowledge. Using a Yb-fiber-based green source in combination with two spiral phase ...
  • Mishra, Akash K.; Chakraborty, Sumanta; Sarkar, Sudipta (APS, 2019-05)
    We have derived the differential equation governing the evolution of the photon sphere for dynamical black hole spacetimes with or without spherical symmetry. Numerical solution of the same depicting evolution of the photon ...
  • Nath, Newton; Ghosh, Monojit; Gupta, Shivani (World Scientific Publishing, 2016-08)
    We present a detailed analysis and phenomenological consequences of neutrino mass matrix, MνMν, with one-zero texture in the flavor basis where the active neutrino sector is extended by one sterile neutrino (3+1 case). In ...
  • Sengupta, Anand (IOP Publishing, 2017-09)
    We present the results of a semicoherent search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1, using data from the first Advanced LIGO observing run. The search method uses details of the ...
  • Sengupta, Anand (American Physical Society, 2016-11)
    We report here the non-detection of gravitational waves from the merger of binary–neutron star systems and neutron star–black hole systems during the first observing run of the Advanced Laser Interferometer Gravitational-wave ...
  • Sengupta, Anand (American Physical Society, 2017-03)
    A wide variety of astrophysical and cosmological sources are expected to contribute to a stochastic gravitational-wave background. Following the observations of GW150914 and GW151226, the rate and mass of coalescing binary ...
  • Jauhari, Smita; Parekh, Kinnari; Pai, K.B.; Upadhyay, Ramesh V. (National Association of Corrosion Engineers, 2010)
    Nanomagnetic fluid (ferromagnetic nanoparticles) which has been evaluated as a corrosion inhibitor and the corrosion behavior of carbon steel in 1 M sulfuric acid (H2S04) is discussed. The nanomagnetic fluid was synthesized ...
  • Midhun, M.; Ramesh, R. (Springer, 2016-03)
    Stable oxygen isotope ratios (δ18O) of tree cellulose and speleothem carbonate are useful proxies for past monsoon rain in many tropical regions, as a decrease in rain δ18O is observed with increase in rainfall on a monthly ...
  • Mallika, Chinmay; Chandra, Naveen; Venkataramani, S.; Lal, Shyam (Elsevier, 2016-05)
    Atmospheric carbonyl sulfide (COS) is a major precursor for sulfate aerosols that play a critical role in climate regulation. Recent studies have highlighted the importance of COS measurements as a reliable means to constrain ...
  • Laskar, Fazlul I.; Pallamraju, Duggirala; Veenadhari, Bhaskara (Terra Scientific Publishing Company, 2014-08)
    Comprehensive behavior of the low-latitude upper atmosphere during sudden stratospheric warming (SSW) events at varying levels of solar activity has been investigated. The equatorial electrojet (EEJ) strength and the total ...
  • Prabhakar, Shashi; Salla, Gangi Reddy; Aadhi, A.; Perumangatt, Chithrabhanu; Samanta, Goutam Kumar; Singh, Ravindra P. (American Physical Society, 2015-08)
    We have considered optical beams with phase singularity and experimentally verified that these beams, although classical, have properties of two-mode entanglement in quantum states. We have observed the violation of Bell's ...
  • Ghosh, Snigdha; Samanta, Subhasis; Ghosh, Sabyasachi; Mishra, Hiranmaya (World Scientific Publishing, 2019-06)
    We have attempted to review on microscopic calculation of transport coefficients like shear and bulk viscosities in the framework of hadron resonance gas (HRG) model, where a special attention is explored on the effect of ...
  • Atreya, Abhishek; Bhatt, Jitesh R.; Mishra, Arvind (IOP Publishing, 2018-02)
    Self interacting dark matter (SIDM) provides us with a consistent solution to certain astrophysical observations in conflict with collision-less cold DM paradigm. In this work we estimate the shear viscosity (η) and bulk ...
  • Atreya, Abhishek; Bhatt, Jitesh R.; Mishra, Arvind (IOP Publishing, 2019-02)
    The viscosity of dark matter in cosmological models may cause an accelerated expansion and when this effect is sufficiently large, it can explain the dark energy. In this work, attributing the origin of viscosity to ...
  • Bhagwat, Ameeya A.; Vinas, X.; Wyss, R.; Schuck, P. (World Scientific Publishing, 2010-04)
    We propose to use the semi-classical Wigner-Kirkwood ħ expansion to calculate shell corrections for spherical and deformed nuclei. The expansion is carried out up to fourth order in ħ. A systematic study of Wigner-Kirkwood ...
  • Ghosh, Snigdha; Sarkar, Sourav; Mitra, Sukanya (American Physical Society, 2017-03)
    The self-energy of the Δ baryon is evaluated at a finite temperature and density using the real-time formalism of thermal field theory. The Dyson-Schwinger equation is used to get the exact thermal propagator followed ...
  • Mohanty, Subhendra; Anand, Sampurn; Chaubal, Prakrut; Mazumdar, Arindam; Parashari, Priyank (Springer, 2018-08)
    In the recent past, measurements of ?8 from large scale structure observations have shown some discordance with its value obtained from Planck CMB within the ? CDM frame. This discordance naturally leads to a mismatch ...

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