DSpace Repository

Browsing Articles by Title

Browsing Articles by Title

Sort by: Order: Results:

  • HAMILTONIAN FORMULATION OF DUST CLOUD COLLAPSE 
    Kwidzinski, Nick; Malafarina, Daniele; Ostrowski, Jan J.; Piechocki, Włodzimierz; Schmitz, Tim (arxiv, 2020-04)
    We consider the gravitational collapse of a self-gravitating spherical dust cloud in the Hamiltonian formalism. We address both homogeneous and inhomogeneous cases. Our novel derivation of the Hamiltonian of the system ...
  • Horizon-T experiment and detection of Extensive air showers with unusual structure 
    Beznosko, Dmitriy; Beisembaev, R. U.; Baigarin, Kanat; Batyrkhanov, Ayan; Beisembaeva, Elena; Beremkulov, Т.; Dalkarov, O.D.; Iakovlev, Alexander; Ryabov, Vladimir; Suleimenov, N. S.; Sadykov, Turlan; Tagay, Zhenisbek; Uakhitov, T.; Vildanova, M. I.; Zhukov, V. V. (IOP Publishing, 2020-01-01)
    Horizon-T is an innovative detector system constructed to study temporary structure of Extensive Air Showers (EAS) in the energy range above ~1016 eV coming from a wide range of zenith angles (up to 80°). The system, located ...
  • Horizon-T Experiment Upgrade and Calibration of New Detection Points 
    Beznosko, Dmitriy; Beremkulov, Т.; Iakovlev, A.; Jakupov, S; Turganov, D.; Tussipzhan, A; Uakhitov, T.; Vildanova, M.I.; Yeltokov, A; Zhukov, V.V. (Nazarbayev University School of Sciences and Humanities, 2019-06-12)
    In March of 2018, after the completion of the Physics Run 2, an upgrade has been installed at an innovative detector system Horizon-T, with the upgraded version now called Horizon-10T. It was constructed to study Extensive ...
  • THE IMPACT OF PROGENITOR ASYMMETRIES ON THE NEUTRINO-DRIVEN CONVECTION IN CORE-COLLAPSE SUPERNOVAE 
    Kazeroni, R´emi; Abdikamalov, Ernazar (arxiv, 2020)
    The explosion of massive stars in core-collapse supernovae may be aided by the con vective instabilities that develop in their innermost nuclear burning shells. The re sulting fluctuations support the explosion by generating ...
  • IMPRINT OF PRESSURE ON CHARACTERISTIC DARK MATTER PROFILES: THE CASE OF ESO0140040 
    Boshkayev, Kuantay; Konysbayev, Talgar; Kurmanov, Ergali; Luongo, Orlando; Muccino, Marco (MDPI, 2020-10-22)
    We investigate the dark matter distribution in the spiral galaxy ESO0140040, employing the most widely used density profiles: the pseudo-isothermal, exponential sphere, Burkert, Navarro-Frenk-White, Moore and Einasto ...
  • INFLUENCE OF NEUTRON IRRADIATION AND AGEING ON BEHAVIOR OF SAV-1 REACTOR ALLOY 
    Tsay, K.V.; Rofman, O.V.; Kudryashov, V.V.; Yarovchuk, A.V.; Maksimkin, O.P. (Nuclear Engineering and Technology, 2021-10)
    This study observed the effect of neutron irradiation and ageing on the microstructure, hardness, and corrosion resistance of SAV-1 (Al–Mg–Si) alloy. The investigated material was irradiated with neutrons to fluences of ...
  • LARGE-SCALE MAGNETIC FIELD IN THE MONOCEROS OB 1 EAST MOLECULAR CLOUD 
    Alina, D.; Montillaud, J.; Hu, Y.; Lazarian, A.; Ristorcelli, I.; Abdikamalov, E.; Sagynbayeva, S.; Juvela, M.; Liu, T.; Carrière, J.-S. (Astronomy & Astrophysics, 2022)
    Context. The role of large-scale magnetic fields in the evolution of star-forming regions remains elusive. Its investigation requires the observational characterization of well-constrained molecular clouds. The Monoceros ...
  • LARGE-SCALE MAGNETIC FIELD IN THE MONOCEROS OB-1 EAST MOLECULAR CLOUD 
    Alina, D.; Montillaud, J.; Hu, Y.; Lazarian, A.; Ristorcelli, I.; Abdikamalov, E.; Sagynbayeva, S.; Juvela, M.; Liu, T.; Carrière, J.-S. (Astronomy & Astrophysics manuscript, 2021)
    Context. The role of large-scale magnetic fields in the evolution of star forming regions remains elusive. Its understanding requires observational characterisation of well-constrained molecular clouds. The Monoceros OB1 ...
  • LIGHT AND AIRY: A SIMPLE SOLUTION FOR RELATIVISTIC QUANTUM ACCELERATION RADIATION 
    Good, Michael R. R.; Linder, Eric V. (Universe, 2021-03-05)
    We study the quantum radiation of particle production by vacuum from an ultra-relativistic moving mirror (dynamical Casimir effect) solution that allows (possibly for the first time) analytically calculable time evolution ...
  • LIGHT TRAPPING BY ARBITRARILY THIN CAVITIES 
    Zhumabek, Tilek; Valagiannopoulos, Constantinos (PHYSICAL REVIEW RESEARCH, 2020)
    Simple plasmonic multilayers are found to perfectly trap electromagnetic waves around specific incidence directions, regardless of the sample thickness. Such a counterintuitive feature is acquired via increasing un boundedly ...
  • Magnetic Fields in the Infrared Dark Cloud G34.43+0.24 
    Soam, Archana; Liu, Tie; Andersson, B-G; Lee, Chang Won; Liu, Junhao; Juvela, Mika; Li, Pak Shing; Goldsmith, Paul F.; Zhang, Qizhou; Koch, Patrick M.; Kim, Kee-Tae; Qiu, Keping; Evans, Neal J., II; Johnstone, Doug; Thompson, Mark; Ward-Thompson, Derek; Di Francesco, James; Tang, Ya-Wen; Montillaud, Julien; Kim, Gwanjeong; Mairs, Steve; Sanhueza, Patricio; Kim, Shinyoung; Berry, David; Gordon, Michael S.; Tatematsu, Ken'ichi; Liu, Sheng-Yuan; Pattle, Kate; Eden, David; McGehee, Peregrine M.; Wang, Ke; Ristorcelli, I.; Graves, Sarah F.; Alina, Dana; Lacaille, Kevin M.; Montier, Ludovic; Park, Geumsook; Kwon, Woojin; Chung, Eun Jun; Pelkonen, Veli-Matti; Micelotta, Elisabetta R.; Saajasto, Mika; Fuller, Gary (IOP PUBLISHING, 2019-09-24)
    We present the B-fields mapped in IRDC G34.43+0.24 using 850 mu m polarized dust emission observed with the POL-2 instrument at the James Clerk Maxwell telescope. We examine the magnetic field geometries and strengths in ...
  • MaLeFiSenta: Machine Learning for FilamentS Identification and Orientation in the ISM 
    Alina, Dana; Shomanov, Adai; Baimukhametova, Sarah (IEEE Access, 2022-07-22)
    Filament identification became a pivotal step in tackling fundamental problems in various fields of Astronomy. Nevertheless, existing filament identification algorithms are critically user-dependent and require individual ...
  • MODIFICATION OF SILVER NANOWIRE COATINGS WITH INTENSE PULSED ION BEAM FOR TRANSPARENT HEATERS 
    Kaikanov, Marat; Amanzhulov, Bauyrzhan; Demeuova, Gulzat; Akhtanova, Gulnur; Bozheyev, Farabi; Kemelbay, Aidar; Tikhonov, Alexander (MDPI, 2020-10-29)
    : In this report, an improvement of the electrical performance and stability of a silver nanowire (AgNW) transparent conductive coating (TCC) is presented. The TCC stability against oxidation is achieved by coating the ...
  • MODIFIED SCHWARZSCHILD METRIC FROM A UNITARY ACCELERATING MIRROR ANALOG 
    Good, Michael R.R.; Linder, Eric V. (IOP Publishing Ltd, 2021-04-02)
    We present a modified Schwarzschild solution for a model of evaporation of a black hole with information preservation. By drawing a direct analogy to the quantum pure accelerating mirror (dynamical Casimir effect of a 1D ...
  • MOTION OF SPINNING PARTICLES IN NON ASYMPTOTICALLY FLAT SPACETIMES 
    Toshmatov, Bobir; Rahimov, Ozodbek; Ahmedov, Bobomurat; Malafarina, Daniele (Springer Verlag, 2020-07)
    The assumption of asymptotic flatness for isolated astrophysical bodies may be considered an approximation when one considers a cosmological context where a cosmological constant or vacuum energy is present. In this framework ...
  • NANOSCALE THERMAL TRANSPORT AND ELASTIC PROPERTIES OF LITHIATED AMORPHOUS SI THIN FILMS 
    Abdullaev, Azat; Mukanova, Aliya; Yakupov, Talgat A.; Mentbayeva, Almagul; Bakenov, Zhumabay; Utegulov, Zhandos N. (Materials Today: Proceedings, 2020-01-16)
    Silicon is the heart of modern electronics and due to it is high theoretical storage capacity it also attracted much attention as a possible anode material for the next generation Li-ion batteries. Heat conduction is one ...
  • NANOTUBES AS SINKS FOR QUANTUM PARTICLES 
    Valagiannopoulos, Constantinos (arxiv, 2021)
    Nanotubes with proper thickness, size and texture make ultra-efficient sinks for the quantum particles traveling into spe cific background media. Several optimal semiconducting cylindrical layers are re ported to achieve ...
  • NEUTRINO OSCILLATION IN THE Q-METRIC 
    Boshkayev, Kuantay; Luongo, Orlando; Muccino, Marco (EDP Sciences, 2020-10-19)
    We investigate neutrino oscillation in the field of an axially symmetric space-time, employing the so-called q-metric, in the context of general relativity. Following the standard approach, we compute the phase shift ...
  • Note on the mass–radius relations for spherical compact objects in general relativity with semi-classical corrections 
    Nussupbekov, Ayan; Malafarina, Daniele (SpringerOpen, 2020-03-12)
    We consider the effects that modifications to general relativity (GR) at high densities may have on the structure of spherical compact objects. Such effects can be modeled via semi-classical corrections that are manifest ...
  • OBTAINING OF UFG STRUCTURE OF ZR-1% NB ALLOY BY RADIAL-SHEAR ROLLING 
    ARBUZ, Alexandr; KAWALEK, Anna; OZHMEGOV, Kirill; DANIYEVA, Nurgul; PANIN, Evgeniy (Metal 2020, 2020)
    An overview of the prospects for the development of nuclear technologies and the conclusion of the relevant requirements for advanced structural materials, their classification and features were described. In order to ...