Teraelectronvolt pulsed emission from the Crab pulsar detected by MAGIC
Abstrak
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 report the most energetic pulsed emission ever detected from the Crab Pulsar reaching up to 1.5 TeV. The pulse profile shows two narrow peaks synchronized with those measured in the GeV energy range. The spectra of the two peaks follow two different power-law functions from 70 GeV up to 1.5 TeV and connect smoothly with the spectra measured above 10 GeV by the Large Area Telescope (LAT) on board the Fermi satellite. When making a joint fit of the LAT and MAGIC data above 10 GeV the photon indices of the spectra differ by 0.5 ± 0.1. Conclusions. Using data from the MAGIC telescopes we measured the most energetic pulsed photons from a pulsar to date. Such TeV pulsed photons require a parent population of electrons with a Lorentz factor of at least 5 × 106. These results strongly suggest IC scattering off low-energy photons as the emission mechanism and a gamma-ray production region in the vicinity of the light cylinder.
Topik & Kata Kunci
Penulis (261)
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. 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. Laguna
Tenerife
U. L. Laguna
D. Astrof'isica
E. 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
Hakubi 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
U. Riverside
CA 92521
Now at Institut fur Astro- und Teilchenphysik
L. Innsbruck
A. Innsbruck
M Austria
also at Japanese Magic Consortium
N. Eso
Turku
also at INAF-Trieste
A. M. C. F. Astrophysics
1290
Versoix
Akses Cepat
- Tahun Terbit
- 2015
- Bahasa
- en
- Total Sitasi
- 123×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1051/0004-6361/201526853
- Akses
- Open Access ✓