Browsing Department of Physics by Title

Browsing Department of Physics by Title

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  • Absence of paired crossing in the positive parity bands of Cs 124 
    Singh, A.K.; Basu, A.; Nag, S.; Hübel, H.; Domscheit, J.; Ragnarsson, I.; Al-Khatib, A.; Hagemann, G.B.; Herskind, B.; Elema, D.R.; Wilson, J.N.; Clark, R.M.; Cromaz, M.; Fallon, P.; Görgen, A.; Lee, I.-Y.; Ward, D.; Ma, W.C. (American Physical Society, 2018-03-20)
    High-spin states in Cs124 were populated in the Ni64(Ni64,p3n) reaction and the Gammasphere detector array was used to measure γ-ray coincidences. Both positive- and negative-parity bands, including bands with chiral ...
  • Active nematic gel with quenched disorder 
    Kumar, Sameer; Mishra, Shradha (American Physical Society, 2022-10)
    With quenched disorder, we introduce two-dimensional active nematics suspended in an incompressible fluid. We write the coarse-grained hydrodynamic equations of motion for slow variables, viz. density, orientation, and ...
  • Active polar flock with birth and death 
    Mishra, Pawan Kumar; Mishra, Shradha (American Institute of Physics Inc., 2022-05)
    We study a collection of self-propelled polar particles on a two-dimensional substrate with birth and death. We introduce a minimal lattice model for the system using active Ising spins, where each particle can have two ...
  • Activity-driven phase separation and ordering kinetics of passive particles 
    Dikshit, Shambhavi; Mishra, Shradh (Springer Science and Business Media Deutschland GmbH, 2022-03)
    Abstract: The steady state and phase ordering kinetics in a pure active Brownian particle system are studied in recent years. In binary mixture of active and passive Brownian particles passive particles are used as probe ...
  • Advanced asteroseismic modelling: breaking the degeneracy between stellar mass and initial helium abundance 
    Verma, Kuldeep; Rørsted, Jakob L.; Serenelli, Aldo M.; Aguirre Børsen-Koch, Víctor; Winther, Mark L.; Stokholm, Amalie (Oxford University Press, 2022-09)
    Current stellar model predictions of adiabatic oscillation frequencies differ significantly from the corresponding observed frequencies due to the non-adiabatic and poorly understood near-surface layers of stars. However, ...
  • Al-doped ZnO based long range optical fibre sensor for efficient low refractive index detection 
    Kumar, Hemant; Kumar, Raj; Ramani, Umang; Singh, Bipin K.; Pandey, Praveen C. (Springer, 2023-05-14)
    In this article, a simulation of surface plasmon resonance (SPR) based Al-doped ZnO (AZO) coated long-range low refractive index detections in infrared range sensor by the finite element method is presented. Plasmonic ...
  • Anomalous and topological Hall effect in Cu doped Sb2Te3topological insulator 
    Singh, A.; Gangwar, V.K.; Shahi, P.; Pal, D.; Singh, R.; Kumar, S.; Singh, S.; Gupta, S.K.; Kumar, S.K.; Kumar, S.; Cheng, J. (American Institute of Physics Inc., 2020-08-31)
    The magneto-transport and magnetization measurements of Sb1.90Cu0.10Te3 were performed by varying both temperature and the magnetic field. The induced antiferromagnetic ordering with Cu doping and the observed quantum ...
  • Assessment of atmospheric aerosols over Varanasi: Physical, optical and chemical properties and meteorological implications 
    Kumar, P.; Pratap, V.; Kumar, A.; Chaudhary, A.; Prasad, R.; Shukla, A.; Singh, R.P.; Singh, A.K. (Elsevier Ltd, 2020-11-01)
    The present paper reports the results derived from PM2.5 and PM10 concentrations during October 2016–May 2018 using MICROTOPS-II Sunphotometer and high volume samplers at Varanasi. Observed data were categorized and analyzed ...
  • AutoTAB: Automatic Tracking Algorithm for Bipolar Magnetic Regions 
    Sreedevi, Anu; Jha, Bibhuti Kumar; Karak, Bidya Binay; Banerjee, Dipankar (American Astronomical Society, 2023-10-04)
    Bipolar magnetic regions (BMRs) provide crucial information about solar magnetism. They exhibit varying morphology and magnetic properties throughout their lifetime, and studying these properties can provide valuable ...
  • A Bayesian chemical evolution model of the DustPedia galaxy M74 
    Calura, Francesco; Palla, Marco; Morselli, Laura; Spitoni, Emanuele; Casasola, Viviana; Verma, Kuldeep; Enia, Andrea; Meneghetti, Massimo; Bianchi, Simone; Pozzi, Francesca; Gruppioni, Carlotta (Oxford University Press, 2023-08-01)
    We introduce a new, multizone chemical evolution model of the DustPedia galaxy M74, calibrated by means of Markov Chain Monte Carlo methods. We take into account the observed stellar and gas density profiles and use Bayesian ...
  • Bending waves in velocity space: A first look at the THINGS sample 
    Nandakumar, Meera; Narayan, Chaitra; Dutta, Prasun (Oxford University Press, 2022-06-01)
    Detection of bending waves is a highly challenging task even in nearby disc galaxies due to their sub-kpc bending amplitudes. However, simulations show that the harmonic bending of a Milky Way-like disc galaxy is associated ...
  • Bistatic specular scattering measurements for the estimation of rice crop growth variables using fuzzy inference system at X-, C-, and L-bands 
    Vishwakarma, A.K.; Prasad, R. (Taylor and Francis Ltd., 2020-10-02)
    Bistatic scatterometer measurements were performed on the rice crop-bed in the angular range of 20° to 60° for specular direction (Formula presented.) at X-, C- and L-bands for HH-, VV-, and HV-polarizations. The dominant ...
  • Calibration requirements for Epoch of Reionization 21-cm signal observations - II. Analytical estimation of the bias and variance with time-correlated residual gains 
    Kumar, Jais; Dutta, Prasun; Choudhuri, Samir; Roy, Nirupam (Oxford University Press, 2022-05-01)
    Observation of redshifted 21-cm signals from neutral hydrogen holds the key to understanding the structure formation and its evolution during the reionization and post-reionization era. Apart from the presence of orders ...
  • Changes of Glacier Lakes Using Multi-Temporal Remote Sensing Data: A Case Study from India 
    Praveen Kumar Rai; Varun Narayan Mishra (Department of Geography, Tourism and Hotel Management, 2017-05-19)
    The present study used the potential of Landsat multispectral data and ASTER-DEM data to identify the changes of glacier lakes in part of Chandra basin and surrounding of Himachal Pradesh of India from 1989 to 2013. The ...
  • Chaotic transients and hysteresis in an α2 dynamo model 
    Oliveira, D.N.; Rempel, E.L.; Chertovskih, R.; Karak, B.B. (Web Portal IOP, 2021-06)
    The presence of chaotic transients in a nonlinear dynamo is investigated through numerical simulations of the 3D magnetohydrodynamic equations. By using the kinetic helicity of the flow as a control parameter, a hysteretic ...
  • Characteristic, dynamic, and near-saturation regions of out-of-time-order correlation in Floquet Ising models 
    Shukla, Rohit Kumar; Mishra, Sunil Kumar (American Physical Society, 2022-08)
    We study characteristic, dynamic, and saturation regimes of the out-of-time-order correlation (OTOC) in the constant-field Floquet system with and without longitudinal field. In the calculation of OTOC, we take local spins ...
  • Chemiluminescence-based immunoassay for the detection of heroin and its metabolites 
    Singh, S.; Mishra, P.; Banga, I.; Parmar, A.S.; Tripathi, P.P.; Gandhi, S. (Tabriz University of Medical Sciences, 2018)
    Introduction: Continuous use of opiates causes drug-related illnesses, which poses an alarming situation to develop sensitive detection platform. In this study, a highly sensitive and reliable chemiluminescence immunoassay ...
  • Circular Dichroism Spectroscopy of Collagen Fibrillogenesis 
    Drzewiecki, Kathryn E.; Grisham, Daniel R.; Parmar, Avanish S.; Nanda, Vikas; Shreiber, David I. (Biophysical Society, 2016-12-06)
    Type-I collagen assembles in a stepwise, hierarchic fashion from the folding of the triple helix to the assembly of fibrils into fibers. The mature assembled fibers are crucial for tissue structure and mechanics, cell ...
  • CLASSIFICATION OF VARIOUS LAND FEATURES USING RISAT-1 DUAL POLARIMETRIC DATA 
    Mishra, V. N.; Kumar, P.; Gupta, D. K.; Prasad, R. (International Society for Photogrammetry and Remote Sensing, 2014-12-12)
    Land use land cover classification is one of the widely used applications in the field of remote sensing. Accurate land use land cover maps derived from remotely sensed data is a requirement for analyzing many socio-ecological ...
  • Climate change effect on water resources in Varanasi district, India 
    Nistor, Margarit-Mircea; Rai, Praveen K.; Dugesar, Vikas; Mishra, Varun N.; Singh, Prafull; Arora, Aman; Kumra, Virendra Kumar; Carebia, Iulius-Andrei (John Wiley and Sons Ltd, 2019-12-23)
    Evapotranspiration and water availability are driven by changing climate and land cover parameters. In the present study, climatological records and land cover data were analysed simultaneously to accomplish the spatial ...

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