Browsing by Issue Date

Browsing by Issue Date

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  • Jamadagni, Amit; Bhattacharyya, Arpan (IOP Publishing, 2021-10)
    One of the important characteristics of topological phases of matter is the topology of the underlying manifold on which they are defined. In this paper, we present the sensitivity of such phases of matter to the underlying ...
  • Pal, Main; Kumari, Neeraj; Kushwaha, P.; Singh, K. P.; Gupta, Alok C.; Naik, Sachindra; Dewangan, G. C.; Tripathi, P.; Adhikari, Rathin; Adegoke, O.; Nandan, H (Springer Nature, 2021-10)
    We present a detailed timing and spectral study of an extremely variable narrow-line Seyfert 1 galaxy NGC 4748 using observations in the year 2017 and 2014 performed with AstroSat and XMM-Newton, respectively. Both ...
  • Chakravarti, Kabir; Ghosh, Rajes; Sarkar, Sudipta (American Physical Society, 2021-10)
    Quantum aspects of black holes may have observational imprints on their absorption and emission spectrum. In this work, we consider the possibility of nonuniform area quantization and its effects on the phasing of a ...
  • Chatterjee, Ritaban; Das, Susmita; Khasnovis, Archishman; Ghosh, Ritesh; Kumari, Neeraj; Naik, Sachindra; Larionov, V. M.; Grishina, T. S.; Kopatskaya, E. N.; Larionova, E. G.; Nikiforova, A. A.; Morozov, D. A.; Savchenko, S. S.; Troitskaya, Yu V.; Troitsky, I. S.; Vasilyev, A. A. (Springer Nature, 2021-10)
    We study the multi-wavelength variability of the blazar Mrk 421 at minutes to days timescales using simultaneous data at γ-rays from Fermi, 0.7–20 keV energies from AstroSat, and optical and near infrared (NIR) wavelengths ...
  • Bhadury, Samapan; Kurian, Manu; Chandra, Vinod; Jaiswal, Amaresh (IOP Publishing, 2021-10)
    The second-order hydrodynamic equations for evolution of shear and bulk viscous pressure have been derived within the framework of covariant kinetic theory based on the effective fugacity quasiparticle model. The ...
  • Aoki, T.; Sreekantham, Rithvik Kumar; Sahoo, B. K.; Arora, Bindiya; Kastberg, A.; Sato, T.; Ikeda, H.; Okamoto, N.; Torii,Y.; Hayamizu, T.; Nakamura, K.; Nagase, S.; Ohtsuka, M.; Nagahama, H.; Ozawa, N.; Sato, M.; Nakashita, T.; Yamane, K.; Tanaka, K. S.; Harada, K.; Kawamura, H.; Inoue, T.; Uchiyama, A.; Hatakeyama, A.; Takamine, A.; Ueno, H.; Ichikawa, Y.; Matsuda, Y.; Haba, H.; Sakemi, Y. (IOP Publishing, 2021-10)
    We propose a method to measure the electron electric dipole moment (eEDM) using ultracold entangled francium (Fr) atoms trapped in an optical lattice, yielding an uncertainty below the standard quantum limit. Among the ...
  • Jena, Partha Sarathi; Bhushan, Ravi; Shivam, Ajay; Nambiar, Romi; Bharti, Nisha (Elsevier, 2021-10)
    The first measurement of meteoric beryllium-10 (10Be) using Accelerator Mass Spectrometer (AMS) is reported from PRL-AURiS (Physical Research Laboratory-Accelerator Unit for Radioisotope Studies). Strategically, the meteoric ...
  • Naeem, Sumayyah; Naeem, Farah; Mujtaba, Jawayria; Shukla, Ashish Kumar; Mitra, Shirsendu; Huang, Gaoshan; Gulina, Larisa; Rudakovskaya, Polina; Cui, Cui; Tolstoy, Valeri; Gorin, Dmitry; Mei, Yongfeng; Solovev, Solovev; Dey, Krishna Kanti (MDPI, 2021-10)
    Gaseous oxygen plays a vital role in driving the metabolism of living organisms and has multiple agricultural, medical, and technological applications. Different methods have been discovered to produce oxygen, including ...
  • Rout, Sandeep K.; Vadawale, Santosh V.; Aarthy, E.; Ganesh, Shashikiran; Joshi, Vishal; Roy, Jayashree; Misra, Ranjeev; Yadav, J. S. (Springer, 2021-10)
    The origins of X-ray and radio emissions during an X-ray binary outburst are comparatively better understood than those of ultraviolet, optical and infrared radiation. This is because multiple competing mechanisms - emission ...
  • Dewangan, L. K.; Dhanya, J. S.; Bhadari, Naval Kishor; Ojha, D. K.; Baug, T. (Oxford University Press, 2021-10)
    The paper presents an analysis of multiwavelength data of two Lynds Bright Nebulae (LBNs), LBN 140.07+01.64 and LBN 140.77−1.42. The 1420-MHz continuum map reveals an extended Y-shaped feature (linear extent ∼3.7°), which ...
  • Kumar, Abhay; Chattopadhyay, Tanmoy; Vadawale, Santosh V.; Rao, A. R.; Gupta, Soumya; Mithun, N. P. S.; Bhalerao, Varun; Bhattacharya, Dipankar (Springer Nature, 2021-10)
    The Cadmium-Zinc-Telluride Imager (CZTI) onboard AstroSat is designed for hard X-ray imaging and spectroscopy in the energy range of 20-100 keV. The CZT detectors are of 5-mm thickness and hence have good efficiency for ...
  • Mondal, Biswajit; Sarkar, Aveek; Vadawale, Santosh V.; Mithun, N. P. S.; Janardhan, P.; Del Zanna, Giulio; Mason, Helen E.; Mitra-Kraev, Urmila; Narendranath, S. (IOP Publishing, 2021-10)
    The Solar X-ray Monitor (XSM) payload on board Chandrayaan-2 provides disk-integrated solar spectra in the 1�15 keV energy range with an energy resolution of 180 eV (at 5.9 keV) and a cadence of 1 s. During the period from ...
  • Jaisawal, Gaurava K.; Naik, Sachindra; Gupta, Shivangi; Agrawal, P. C., Jana, Arghajit; Chhotaray, Birendra; Epili, Prahlad R. (Springer Nature, 2021-10)
    We present the results obtained from timing and spectral studies of Be/X-ray binary pulsar EXO 2030 +375 using observations with the Large Area Xenon Proportional Counters and Soft X-ray Telescope of AstroSat, at various ...
  • Bhattacharyya, Arpan; Haque, S. Shajidul; Kim, Eugene H. (Springer Verlag, 2021-10)
    We investigate circuit complexity to characterize chaos in multiparticle quantum systems. In the process, we take a stride to analyze open quantum systems by using complexity. We propose a new diagnostic of quantum chaos ...
  • Roy, Soumen; Sengupta, Anand S.; et al. (American Physical Society, 2021-10)
    We report on an all-sky search for continuous gravitational waves in the frequency band 20–2000 Hz and with a frequency time derivative in the range of [−1.0,+0.1]×10−8  Hz/s. Such a signal could be produced by a nearby, ...

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