Results 101 to 110 of about 108,919 (255)

A Decade of Linear and Circular Polarimetry with the POLISH2 Polarimeter

The Astrophysical Journal Supplement Series, 2023
The POLISH2 optical polarimeter has been in operation at the Lick Observatory 3 m Shane telescope since 2011, and it was commissioned at the Gemini North 8 m in 2016.
Sloane J. Wiktorowicz, Agnieszka Słowikowska, Larissa A. Nofi, Nicole Rider, Angie Wolfgang, Ninos Hermis, Daniel Jontof-Hutter, Amanda J. Bayless, Gary M. Cole, Kirk B. Crawford, Valeri V. Tsarev, Michael C. Owens, Ernest G. Jaramillo, Geoffrey A. Maul, James R. Graham, Maxwell A. Millar-Blanchaer, Kimberly Bott, Jon C. Mauerhan   +17 more
doaj   +1 more source

Crab pulsar spectrum: A non-extensive approach [PDF]

New Astronomy, 2015
Non extensive statistical physics has been applied to various problems in physics including astrophysics. In this paper we explore the possibility of using non extensive approach to explain the recently observed pulsed $ $-ray from Crab pulsar above 100 GeV observed by VERITAS $ $-ray telescope.
openaire   +2 more sources

Polarimetric Evidence of the First White Dwarf Pulsar: The Binary System AR Scorpii

Galaxies, 2018
The binary star AR Scorpii was recently discovered to exhibit high amplitude coherent variability across the electromagnetic spectrum (ultraviolet to radio) at two closely spaced ∼2 min periods, attributed to the spin period of a white dwarf and the beat
David A.H. Buckley, Stephen B. Potter, Pieter J. Meintjes, Tom R. Marsh, Boris T. Gänsicke   +4 more
doaj   +1 more source

Synchrotron Pair Production Equilibrium in Relativistic Magnetic Reconnection

The Astrophysical Journal, 2023
Magnetic reconnection is ubiquitous in astrophysical systems, and in many such systems the plasma suffers from significant cooling due to synchrotron radiation.
Alexander Y. Chen, Dmitri Uzdensky, Jason Dexter   +2 more
doaj   +1 more source

A LOW FREQUENCY SURVEY OF GIANT PULSES FROM THE CRAB PULSAR [PDF]

, 2016
We present a large survey of giant pulses from the Crab Pulsar as observed with the first station of the Long Wavelength Array. Automated methods for detecting giant pulses at low frequencies where scattering becomes prevalent are also explored.
T. Eftekhari, K. Stovall, J. Dowell, F. Schinzel, G. Taylor   +4 more
semanticscholar   +1 more source

Spectra of Crab-like pulsars

The Astrophysical Journal, 1989
Un modele est construit pour le rayonnement energetique resultant de la formation d'une region de depletion des charges (gap) dans la magnetosphere exterieure des pulsars en rotation rapide. Le modele utilise une procedure iterative avec un parametre variant qui represente la fraction lineaire de la magnetosphere occupee par le gap.
openaire   +1 more source

Teraelectronvolt pulsed emission from the Crab pulsar detected by MAGIC [PDF]

, 2015
Aims. We investigate the extension of the very high-energy spectral tail of the Crab Pulsar at energies above 400 GeV. Methods. We analyzed ~320 h of good-quality Crab data obtained with the MAGIC telescope from February 2007 to April 2014. Results. We
M. C. S. Ansoldi, L. A. Antonelli, P. Antoranz, A. Babić, P. Bangale, U. D. Almeida, J. Barrio, J. Gonz'alez, W. Bednarek, E. Bernardini, B. Biasuzzi, A. Biland, O. Blanch, S. Bonnefoy, G. Bonnoli, F. Borracci, T. Bretz, E. Carmona, A. Carosi, P. Colin, E. Colombo, J. Contreras, J. Cortina, S. Covino, P. D. Vela, F. Dazzi, A. Angelis, G. Caneva, B. Lotto, E. O. Wilhelmi, C. Mendez, F. Pierro, D. Prester, D. Dorner, M. Doro, S. Einecke, D. Glawion, D. Elsaesser, A. Fern'andez-Barral, D. Fidalgo, M. V. Fonseca, L. Font, K. Frantzen, C. Fruck, D. Galindo, R. L'opez, M. Garczarczyk, D. G. Terrats, M. Gaug, N. Godinovi'c, A. G. Muñoz, S. Gozzini, Y. Hanabata, M. Hayashida, J. Herrera, K. Hirotani, J. Hose, D. Hrupec, G. Hughes, W. Idec, K. Kodani, Y. Konno, H. Kubo, J. Kushida, A. Barbera, D. Lelas, N. Lewankowska, E. Lindfors, S. Lombardi, F. Longo, M. L'opez, R. L'opez-Coto, E. Lorenz, M. Makariev, K. Mallot, G. Maneva, K. Mannheim, L. Maraschi, B. Marcote, M. Mariotti, M. Mart'inez, D. Mazin, U. Menzel, J. Miranda, R. Mirzoyan, A. Moralejo, P. Munar-Adrover, D. Nakajima, V. Neustroev, A. Niedźwiecki, M. Rosillo, K. Nilsson, K. Nishijima, K. Noda, R. Orito, A. Overkemping, S. Paiano, J. Palacio, M. Palatiello, D. Paneque, R. Paoletti, J. Paredes, X. Paredes-Fortuny, M. Persic, J. Poutanen, P. Moroni, E. Prandini, I. Puljak, R. Reinthal, W. Rhode, M. Rib'o, J. Rico, J. Garcia, T. Saito, K. Satalecka, V. Scalzotto, V. Scapin, C. Schultz, T. Schweizer, S. Shore, A. Sillanpaa, J. Sitarek, I. Šnidarić, D. Sobczynska, A. Stamerra, T. Steinbring, M. Strzys, L. Takalo, H. Takami, F. Tavecchio, P. Temnikov, T. Terzi'c, D. Tescaro, M. Teshima, J. Thaele, D. Torres, T. Toyama, A. Treves, J. Ward, M. Zanin, E. Zurich, CH-8093 Zurich, Switzerland., U. Udine, I. Trieste, I. Udine, Italy., I. I. F. Astrophysics, I-00136 Rome, U. Siena, I. Pisa, I. Siena, Croatian Magic Consortium, Rudjer Boskovic Institute, University of Rijeka, University of Split, U. Zagreb, Croatia., S. S. I. O. Physics, 1. Bidhannagar, Salt Lake, Sector-1, Kolkata 700064, India., M. F. Physik, D-80805 Munchen, H Germany, U. Complutense, E. Madrid, Spain., Instituto de Astrof'isica de Canarias, E-38200 La Laguna, Tenerife, U. L. Laguna, D. Astrof'isica, E-38200 La Laguna, University of L'od'z, PL-90236 Lodz, Poland, D. Elektronen-Synchrotron, D. Zeuthen, Institut de F'isica d'Altes Energies, T. Z. F. O. Science, Technology, Campus Uab, 08193 Bellaterra, U. Wurzburg, D-97074 Wurzburg, U. Padova, Infn, I-35131 Padova, Centro de Investigaciones Energ'eticas, Medioambientales y Tecnol'ogicas, Institute for Space Sciences, E. Barcelona, Technische Universitat Dortmund, D. Dortmund, Unitat de F'isica de les Radiacions, Departament de F'isica, CERES-IEEC, U. Barcelona, E-08193 Bellaterra, U. Barcelona, Icc, IEEC-UB, E. Barcelona, Japanese Magic Consortium, Icrr, T. U. O. Tokyo, D. Physics, H. Center, Kyoto University, T. University, The University of Tokushima, Kek, Japan., Finnish Magic Consortium, T. Observatory, U. Turku, U. Oulu, Finland., Inst. for Nucl. Research, Nucl. Energy, BG-1784 Sofia, Bulgaria., U. Pisa, I. Pisa, Icrea, Now at Centro Brasileiro de Pesquisas F'isicas, R. Sigaud, 150 - Urca, RJ RiodeJaneiro-, 22290-180, Brazil, now at Nasa Goddard Space Flight Center, Greenbelt, MD 20771, Usa, D. O. Astronomy, U. Maryland, College Park, MD 20742, H. Berlin, 15 InstitutfurPhysikNewtonstr., 12489 Berlin Germany, N. C. E. P. F. D. Lausanne, Lausanne, now at Department of PhysicsAstronomy, Uc Riverside, CA 92521, Now at Institut fur Astro- und Teilchenphysik, L. Innsbruck, A. Innsbruck, Austria, also at Japanese Magic Consortium, N. Eso, Turku, also at INAF-Trieste, A. M. C. F. Astrophysics, 1290, Versoix   +260 more
semanticscholar   +1 more source

MAGIC highlights

EPJ Web of Conferences, 2016
The present generation of Imaging Air Cherenkov Telescopes (IACTs) has greatly improved our knowledge on the Very High Energy (VHE) side of our Universe. The MAGIC IACTs operate since 2004 with one telescope and since 2009 as a two telescope stereoscopic
López-Coto Rubén
doaj   +1 more source

Pulsed VHE emission from the Crab Pulsar in the context of magnetocentrifugal particle acceleration [PDF]

, 2016
The Crab Pulsar has been recently detected at very high energies (VHE) with its pulsed VHE emission reaching up to $1.5$ TeV. The VHE peaks appear synchronised with the peaks at GeV energies and show VHE spectra following hard power-law functions.
Z. Osmanov, F. Rieger
semanticscholar   +1 more source

Rotational evolution of the Crab pulsar in the wind braking model [PDF]

, 2015
The pulsar wind model is updated by considering the effect of particle density and pulsar death. It can describe both the short-term and long-term rotational evolution of pulsars consistently.
F. Kou, Hao Tong
semanticscholar   +1 more source