Teraelectronvolt pulsed emission from the Crab pulsar detected by MAGIC
Creators: name: MAGIC Collaboration
name: M. L. Ahnen
name: S. Ansoldi
name: L. A. Antonelli
name: P. Antoranz
name: A. Babic
name: B. Banerjee
name: P. Bangale
name: U. Barres De Almeida
name: J. A. Barrio
name: J. Becerra González
name: W. Bednarek
name: E. Bernardini
name: B. Biasuzzi
name: A. Biland
name: O. Blanch
name: S. Bonnefoy
name: G. Bonnoli
name: F. Borracci
name: T. Bretz
name: S. Buson
name: E. Carmona
name: A. Carosi
name: A. Chatterjee
name: R. Clavero
name: P. Colin
name: E. Colombo
name: J. L. Contreras
name: J. Cortina
name: S. Covino
name: P. Da Vela
name: F. Dazzi
name: A. De Angelis
name: B. De Lotto
name: E. De Oña Wilhelmi
name: C. Delgado Mendez
name: F. Di Pierro
name: A. Domínguez
name: D. Dominis Prester
name: D. Dorner
name: M. Doro
name: S. Einecke
name: D. Eisenacher Glawion
name: D. Elsaesser
name: A. Fernández-Barral
name: D. Fidalgo
name: M. V. Fonseca
name: L. Font
name: K. Frantzen
name: C. Fruck
name: D. Galindo
name: R. J. García López
name: M. Garczarczyk
name: D. Garrido Terrats
name: M. Gaug
name: P. Giammaria
name: N. Godinović
name: A. González Muñoz
name: D. Gora
name: D. Guberman
name: D. Hadasch
name: A. Hahn
name: Y. Hanabata
name: M. Hayashida
name: J. Herrera
name: J. Hose
name: D. Hrupec
name: G. Hughes
name: W. Idec
name: K. Kodani
name: Y. Konno
name: H. Kubo
name: J. Kushida
name: A. La Barbera
name: D. Lelas
name: E. Lindfors
name: S. Lombardi
name: F. Longo
name: M. López
name: R. López-Coto
name: E. Lorenz
name: P. Majumdar
name: M. Makariev
name: K. Mallot
name: G. Maneva
name: M. Manganaro
name: K. Mannheim
name: L. Maraschi
name: B. Marcote
name: M. Mariotti
name: M. Martínez
name: D. Mazin
name: U. Menzel
name: J. M. Miranda
name: R. Mirzoyan
name: A. Moralejo
name: E. Moretti
name: D. Nakajima
name: V. Neustroev
name: A. Niedzwiecki
name: M. Nievas Rosillo
name: K. Nilsson
name: K. Nishijima
name: K. Noda
name: R. Orito
name: A. Overkemping
name: S. Paiano
name: J. Palacio
name: M. Palatiello
name: D. Paneque
name: R. Paoletti
name: J. M. Paredes
name: X. Paredes-Fortuny
name: G. Pedaletti
name: M. Persic
name: J. Poutanen
name: P. G. Prada Moroni
name: E. Prandini
name: I. Puljak
name: W. Rhode
name: M. Ribó
name: J. Rico
name: J. Rodriguez Garcia
name: T. Saito
name: K. Satalecka
name: C. Schultz
name: T. Schweizer
name: S. N. Shore
name: A. Sillanpää
name: J. Sitarek
name: I. Snidaric
name: D. Sobczynska
name: A. Stamerra
name: T. Steinbring
name: M. Strzys
name: L. Takalo
name: H. Takami
name: F. Tavecchio
name: P. Temnikov
name: T. Terzić
name: D. Tescaro
name: M. Teshima
name: J. Thaele
name: D. F. Torres
name: T. Toyama
name: A. Treves
name: V. Verguilov
name: I. Vovk
name: J. E. Ward
name: M. Will
name: M. H. Wu
name: R. Zanin
Publisher: name: INFN Open Access Repository
Year: 2015

description: Aims: To investigate the extension of the very-high-energy spectral tail of
the Crab pulsar at energies above 400 GeV. Methods: We analyzed $\sim$320 hours
of good quality data of Crab with the MAGIC telescope, obtained from February
2007 until April 2014. Results: We report the most energetic pulsed emission
ever detected from the Crab pulsar reaching up to 1.5 TeV. The pulse profile
shows two narrow peaks synchronized with the ones measured in the GeV energy
range. The spectra of the two peaks follow two different power-law functions
from 70 GeV up to 1.5 TeV and connect smoothly with the spectra measured above
10 GeV by the Large Area Telescope (LAT) on board of the Fermi satellite. When
making a joint fit of the LAT and MAGIC data, above 10 GeV, the photon indices
of the spectra differ by 0.5$\pm$0.1. Conclusions: We measured with the MAGIC
telescopes 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 $5\times 10^6$. 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.