Título:
|
Discovery of very high energy gamma rays from 1ES 1218+30.4
|
Autores:
|
Antoranz Canales, Pedro ;
Barrio Uña, Juan Abel ;
Contreras González, José Luis ;
Fonseca González, Mª Victoria ;
López Moya, Marcos ;
Miranda Pantoja, José Miguel
|
Tipo de documento:
|
texto impreso
|
Editorial:
|
IOP Publishing, 2006-05-10
|
Dimensiones:
|
application/pdf
|
Nota general:
|
info:eu-repo/semantics/openAccess
|
Idiomas:
|
|
Palabras clave:
|
Estado = Publicado
,
Materia = Ciencias: Física: Electrónica
,
Materia = Ciencias: Física: Electricidad
,
Materia = Ciencias: Física: Física nuclear
,
Tipo = Artículo
|
Resumen:
|
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.
|
En línea:
|
https://eprints.ucm.es/id/eprint/24226/1/MirandaJM85libre.pdf
|