Simultaneous multiwavelength observations of the second exceptional γ-ray flare of PKS 2155–304 in July 2006

Infrared to X-ray observations of PKS 2155–304 in a low state

(2008) L. Foschini et al.   ASTRONOMY & ASTROPHYSICS

Extragalactic optical-infrared background radiation, its time evolution and the cosmic photon-photon opacity

(2008) A. Franceschini et al.   ASTRONOMY & ASTROPHYSICS

XMM‐NewtonObservations of the TeV BL Lacertae Object PKS 2155−304 in 2006: Signature of Inverse Compton X‐Ray Emission?

(2008) Y. H. Zhang   ASTROPHYSICAL JOURNAL

Multiwavelength Observations of Markarian 421 in 2001 March: An Unprecedented View on the X‐Ray/TeV Correlated Variability

(2008) G. Fossati et al.   ASTROPHYSICAL JOURNAL

Modelling rapid TeV variability of PKS 2155−304

(2008) K. Katarzyński et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Formation of hard very high energy gamma-ray spectra of blazars due to internal photon-photon absorption

(2008) Felix A. Aharonian et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

The blazar sequence: a new perspective

(2008) G. Ghisellini et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy PKS 2155-304

(2008) F. Aharonian et al.   PHYSICAL REVIEW LETTERS