Discovery of very high energy gamma rays from 1ES 1218+30.4
- Albert J
- Aliu E
- Anderhub H
- Antoranz P
- Armada A
- Asensio M
- Baixeras C
- Barrio JA
- Bartelt M
- Bartko H
- Bastieri D
- Bavikadi SR
- Bednarek W
- Berger K
- Bigongiari C
- Biland A
- Bisesi E
- Bock RK
- Bretz T
- Britvitch I
- Camara M
- Chilingarian A
- Ciprini S
- Coarasa JA
- Commichau S
- Contreras JL
- Cortina J
- Curtef V
- Danielyan V
- Dazzi F
- De Angelis A
- de los Reyes R
- De Lotto B
- Domingo-Santamaria E
- Dorner D
- Doro M
- Errando M
- Fagiolini M
- Ferenc D
- Fernandez E
- Firpo R
- Flix J
- Fonseca MV
- Font L
- Galante N
- Garczarczyk M
- Gaug M
- Giller M
- Goebel F
- Hakobyan D
- Hayashida M
- Hengstebeck T
- Hohne D
- Hose J
- Jacon P
- Kalekin O
- Kranich D
- Laille A
- Lenisa T
- Liebing P
- Lindfors E
- Longo F
- Lopez J
- Lopez M
- Lorenz E
- Lucarelli F
- Majumdar P
- Maneva G
- Mannheim K
- Mariotti M
- Martinez M
- Mase K
- Mazin D
- Meucci M
- Meyer M
- Miranda JM
- Mirzoyan R
- Mizobuchi S
- Moralejo A
- Nilsson K
- Ona-Wilhelmi E
- Orduna R
- Otte N
- Oya I
- Paneque D
- Paoletti R
- Pasanen M
- Pascoli D
- Pauss F
- Pavel N
- Pegna R
- Persic M
- Peruzzo L
- Piccioli A
- Poller M
- Prandini E
- Rhode W
- Rico J
- Riegel B
- Rissi M
- Robert A
- Rugamer S
- Saggion A
- Sanchez A
- Sartori P
- Scalzotto V
- Schmitt R
- Schweizer T
- Shayduk M
- Shinozaki K
- Shore SN
- Sidro N
- Sillanpaa A
- Sobczynska D
- Stamerra A
- Stark LS
- Takalo L
- Temnikov P
- Tescaro D
- Teshima M
- Tonello N
- Torres A
- Torres DF
- Turini N
- Vankov H
- Vardanyan A
- Vitale V
- Wagner RM
- Wibig T
- Wittek W
- Zapatero J
Publication date
January 2006
DOI Publisher
University of Chicago Press ISSN
0004-637X Citation count (estimate)
2Abstract
The MAGIC collaboration has studied the high-frequency-peaked BL Lac object 1ES 1218 + 30.4, at a redshift z = 0.182, using the MAGIC imaging air Cerenkov telescope located on the Canary Island of La Palma. A gamma-ray signal was observed with 6.4 sigma significance. The differential energy spectrum for an energy threshold of 120 GeV can be fitted by a simple power law, yielding F-E = (8.1 +/- 2.1) x 10(-7)[E/(250 GeV)](-3.0 +/- 0.4) TeV-1 F (E) m(-2) s(-1). During the 6 days of observation in 2005 January, no time variability on timescales of days was found within the statistical errors. The observed integral flux above 350 GeV is nearly a factor of 2 below the upper limit reported by the Whipple collaboration in 2003
Add to ORKG