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ASTRONOMY & ASTROPHYSICS, ISSN 1432-0746, 07/2018, Volume 615, p. A118
We review the reports of possible year-long quasi-periodicities of BL Lac objects in the gamma-ray and optical bands, and present a homogeneous time analysis... 
galaxies: jets | RED NOISE | TELESCOPE | galaxies: active | SEARCH | BLAZARS | ASTRONOMY & ASTROPHYSICS | SIGNALS | gamma rays: galaxies | BL Lacertae objects: general | MODEL | gamma rays: general | Quasars | Sky surveys (astronomy) | Periodicities | Gravitational waves | BL Lacertae objects | Pulsars
Journal Article
The Astrophysical Journal, ISSN 0004-637X, 12/2005, Volume 635, Issue 1 I, pp. 173 - 179
The HST snapshot imaging survey of 110 BL Lac objects (Urry et al.) has clearly shown that the host galaxies are massive and luminous ellipticals. The... 
BL Lacertae objects: general | EVOLUTION | NUCLEI | SPECTROSCOPY | BLAZARS | ASTRONOMY & ASTROPHYSICS | HOST GALAXIES | SPACE-TELESCOPE SURVEY | EMISSION | BL Lacertae objects : general
Journal Article
1977, Astronomy and astrophysics series., ISBN 0912918233, Volume 4., ix, 283
Book
Astronomy and Astrophysics, ISSN 0004-6361, 12/2016, Volume 596, p. A78
Journal Article
The Astrophysical Journal, ISSN 0004-637X, 03/2010, Volume 712, Issue 1, pp. 14 - 25
Journal Article
ASTRONOMY & ASTROPHYSICS, ISSN 0004-6361, 05/2007, Volume 467, Issue 2, pp. 501 - 508
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 05/2007, Volume 467, Issue 2, pp. 501 - 508
Journal Article
by Albert, J and Aliu, E and Anderhub, H and Antoranz, P and Armada, A and Baixeras, C and Barrio, J. A and Bartko, H and Bastieri, D and Becker, J. K and Bednarek, W and Berger, K and Bigongiari, C and Biland, A and Bock, R. K and Bordas, P and Bosch-Ramon, V and Bretz, T and Britvitch, I and Camara, M and Carmona, E and Chilingarian, A and Coarasa, J. A and Commichau, S and Contreras, J. L and Cortina, J and Costado, M. T and Curtef, V and Danielyan, V and Dazzi, F and De Angelis, A and Delgado, C and de los Reyes, R and De Lotto, B and Domingo-Santamaría, E and Dorner, D and Doro, M and Errando, M and Fagiolini, M and Ferenc, D and Fernández, E and Firpo, R and Flix, J and Fonseca, M. V and Font, L and Fuchs, M and Galante, N and García-López, R and Garczarczyk, M and Gaug, M and Giller, M and Goebel, F and Hakobyan, D and Hayashida, M and Hengstebeck, T and Herrero, A and Höhne, D and Hose, J and Hsu, C. C and Jacon, P and Jogler, T and Kosyra, R and Kranich, D and Kritzer, R and Laille, A and Lindfors, E and Lombardi, S and Longo, F and López, J and López, M and Lorenz, E and Majumdar, P and Maneva, G and Mannheim, K and Mansutti, O and Mariotti, M and Martínez, M and Mazin, D and Merck, C and Meucci, M and Meyer, M and Miranda, J. M and Mirzoyan, R and Mizobuchi, S and Moralejo, A and Nilsson, K and Ninkovic, J and Oña-Wilhelmi, E and Otte, N and Oya, I and Paneque, D and Panniello, M and Paoletti, R and Paredes, J. M and Pasanen, M and Pascoli, D and Pauss, F and Pegna, R and Persic, M and Peruzzo, L and ...
The Astrophysical Journal Letters, ISSN 1538-4357, 09/2007, Volume 666, Issue 1, pp. L17 - L20
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 10/2014, Volume 570, p. A126
Aims. We aim to determine the redshift (or stringent lower limits) of a number of bright BL Lacs objects. Methods. We secured optical and near-infrared... 
Instrumentation: spectrographs | Cosmology: observations | BL Lacertae objects: general | ESO | TELESCOPE OPTICAL SPECTROSCOPY | HOST GALAXIES | instrumentation: spectrographs | SAMPLE | CATALOG | QUASARS | FERMI | BLAZARS | ASTRONOMY & ASTROPHYSICS | cosmology: observations | LAC OBJECTS | REDSHIFT
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 08/2015, Volume 580, p. A73
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 2016, Volume 591, p. L4
Context. BL Lac objects are a rare class of active galactic nuclei that typically show featureless optical spectra that make it difficult to estimate the... 
Galaxies: groups: general | BL Lacertae objects: general | RADIO GALAXIES | TEV EMISSION | ENVIRONMENTS | SPECTROSCOPY | BLAZAR PKS 1424+240 | DIGITAL SKY SURVEY | ASTRONOMY & ASTROPHYSICS | SDSS | galaxies: groups: general | REDSHIFT | RELEASE | Red shift | Algorithms | Galaxies | Catalogues | Blazars | Spectra | Estimates | Astronomy
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 10/2018, Volume 618, p. A175
Aims. We are studying an unbiased sample of 42 nearby (z < 0.2) BL Lacertae objects with a multi-wavelength approach. The results of Very Long Baseline... 
Galaxies: active | BL Lacertae objects: general | Gamma rays: galaxies | Galaxies: jets | CATALOG | galaxies: jets | FERMI-LAT | galaxies: active | BLAZARS | ASTRONOMY & ASTROPHYSICS | LARGE-AREA TELESCOPE | gamma rays: galaxies
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 06/2017, Volume 602, p. A25
Context. The wealth of recent data from Imaging Air Cherenkov telescopes (IACTs), ultra-high energy cosmic-ray experiments and neutrino telescopes have fuelled... 
Radiation mechanisms: non-Thermal | Radiative transfer | BL Lacertae objects: individual: PKS 2155-304 | Gamma rays: galaxies | Astroparticle physics | BL Lacertae