Spectral energy distributions (SEDs) and radio continuum spectra are presented for a northern sample of 104 extragalactic radio sources, based on the Planck...
-
PublicaciónPlanck early results. XV. Spectral energy distributions and radio continuum spectra of northern extragalactic radio sources
-
PublicaciónProbing the very high energy γ-ray spectral curvature in the blazar PG 1553+113 with the MAGIC telescopes
PG 1553+113 is a very high energy (VHE, E > 100 GeV) γ-ray emitter classified as a BL Lac object. Its redshift is constrained by intergalactic absorption lines...
-
PublicaciónQuasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38
We report on quasi-periodic variability found in two blazars included in the Steward Observatory Blazar Monitoring data sample: the BL Lac object 3C 66A and the...
-
PublicaciónSimultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March-April 2008
The blazar PG 1553+113 is a well known TeV γ-ray emitter. In this paper we determine its spectral energy distribution through simultaneous multi-frequency data...
-
PublicaciónSimultaneous Multiwavelength Observation of Mkn 501 in a Low State in 2006
We present results of the multiwavelength campaign on the TeV blazar Mkn 501 performed in 2006 July, including MAGIC for the very-high-energy (VHE) γ-ray band...
-
PublicaciónSimultaneous Multiwavelength Observations of Markarian 421 During Outburst
We report on the results of two coordinated multiwavelength campaigns that focused on the blazar Markarian 421 during its 2006 and 2008 outbursts. These...
-
PublicaciónSimultaneous Multiwavelength Observations of the Blazar 1ES 1959+650 at a Low TeV Flux
We present the results from a multiwavelength campaign on the TeV blazar 1ES 1959+650, performed in 2006 May. Data from the optical, UV, soft- and hard-X-ray...
-
PublicaciónSpectral Energy Distribution of Markarian 501: Quiescent State Versus Extreme Outburst
The very high energy (VHE; E > 100 GeV) blazar Markarian 501 (Mrk 501) has a well-studied history of extreme spectral variability and is an excellent laboratory...
-
PublicaciónSpectral energy distribution of Palomar-Green BL Lacertae objects.
Optical spectroscopy of three recently discovered BL Lacs (PG 1246+586, PG 1424+240 and PG 1437+398) in the Palomar-Green optical survey is presented. The three...