CCD photometry of the BL Lacertae objects 1218+304, 1219+28, and 1727+50 - Point sources, associated nebulosity, and broad-band spectra

1981 ◽  
Vol 249 ◽  
pp. 3 ◽  
Author(s):  
D. Weistrop ◽  
R. F. Mushotzky ◽  
D. B. Shaffer ◽  
H. J. Reitsema ◽  
B. A. Smith
Keyword(s):  
Broad Band ◽  
Point Sources ◽  
Ccd Photometry ◽  
Bl Lacertae Objects ◽  
Bl Lacertae ◽  
Band Spectra

CCD Photometry of 12 BL Lacertae Objects

1996 ◽  
Vol 111 ◽  
pp. 1065 ◽  
Author(s):  
G. Z. Xie ◽  
Y. H. Zhang ◽  
K. H. Li ◽  
F. K. Liu ◽  
J. C. Wang ◽  
...  
Keyword(s):  
Ccd Photometry ◽  
Bl Lacertae Objects ◽  
Bl Lacertae

CCD photometry of five X-ray selected BL Lacertae objects

2010 ◽  
Vol 327 (1) ◽  
pp. 35-58 ◽  
Author(s):  
L. Ma ◽  
G. Z. Xie ◽  
T. F. Yi ◽  
S. B. Zhou ◽  
K. H. Li ◽  
...  
Keyword(s):  
Ccd Photometry ◽  
Bl Lacertae Objects ◽  
X Ray ◽  
Bl Lacertae

CCD photometry of 14 BL Lacertae objects and theoretical model

1992 ◽  
Vol 80 ◽  
pp. 683 ◽  
Author(s):  
G. Z. Xie ◽  
K. H. Li ◽  
F. K. Liu ◽  
R. W. Lu ◽  
J. X. Wu ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Ccd Photometry ◽  
Bl Lacertae Objects ◽  
Bl Lacertae

CCD Photometry and Optical Variability of Gamma-Ray-loud BL Lacertae Object OJ 287 in a Low, Fainter State

2007 ◽  
Vol 133 (5) ◽  
pp. 1995-2000 ◽  
Author(s):  
X. Zhang ◽  
G. Zhao ◽  
Y. G. Zheng ◽  
L. Ma ◽  
Z. H. Xie ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Optical Variability ◽  
Ccd Photometry ◽  
Bl Lacertae

scholarly journals Astrophysical implications of binary black holes in BL Lacertae objects

2002 ◽  
Vol 388 (2) ◽  
pp. 470-476 ◽  
Author(s):  
F. De Paolis ◽  
G. Ingrosso ◽  
A. A. Nucita
Keyword(s):  
Black Holes ◽  
Bl Lacertae Objects ◽  
Binary Black Holes ◽  
Bl Lacertae

scholarly journals Longterm optical monitoring of bright BL Lacertae objects with ATOM: Spectral variability and multiwavelength correlations

2014 ◽  
Vol 573 ◽  
pp. A69 ◽  
Author(s):  
Alicja Wierzcholska ◽  
Michał Ostrowski ◽  
Łukasz Stawarz ◽  
Stefan Wagner ◽  
Marcus Hauser
Keyword(s):  
Optical Monitoring ◽  
Spectral Variability ◽  
Bl Lacertae Objects ◽  
Bl Lacertae

scholarly journals Polarization VLBI Observations of a Complete Sample of Northern BL Lacertae Objects

1998 ◽  
Vol 164 ◽  
pp. 165-166
Author(s):  
A. B. Pushkarev ◽  
D. C. Gabuzda
Keyword(s):  
Magnetic Field ◽  
Radio Emission ◽  
Synchrotron Emission ◽  
Complete Sample ◽  
Bl Lacertae Objects ◽  
Bl Lacertae ◽  
Vlbi Observations ◽  
Core Components ◽  
Jet Structure ◽  
The Magnetic Field

AbstractThe polarization electric vectors in the VLBI jets of BL Lacertae objects are typically aligned with the jet structure. If the jet radio emission is optically thin synchrotron emission, this implies that the magnetic field is perpendicular to the jet, usually interpreted as a signature of shocks. The distribution of polarization position angles in the VLBI core components appears to be bimodal, with the polarization angles either aligned with or perpendicular to the jet direction. In order to study the origin of this characteristic polarization structure, we have made VLBI polarization observations of all 34 sources in the Kühr and Schmidt sample of BL Lacertae objects.

scholarly journals Host galaxy subtraction of TeV candidate BL Lacertae objects

2007 ◽  
Vol 475 (1) ◽  
pp. 199-207 ◽  
Author(s):  
K. Nilsson ◽  
M. Pasanen ◽  
L. O. Takalo ◽  
E. Lindfors ◽  
A. Berdyugin ◽  
...  
Keyword(s):  
Host Galaxy ◽  
Bl Lacertae Objects ◽  
Bl Lacertae

scholarly journals The intraday variability in the radio-selected and X-ray-selected BL Lacertae objects

1998 ◽  
Vol 132 (1) ◽  
pp. 83-92 ◽  
Author(s):  
J. M. Bai ◽  
G. Z. Xie ◽  
K. H. Li ◽  
X. Zhang ◽  
W. W. Liu
Keyword(s):  
Bl Lacertae Objects ◽  
X Ray ◽  
Bl Lacertae ◽  
Intraday Variability
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