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Radio variability of the gamma-ray blazar 0202+149. / Pyatunina, T. B.; Marchenko, S. G.; Marscher, A. P.; Aller, M. F.; Aller, H. D.; Teräsranta, H.; Valtaoja, E.

в: Astronomy and Astrophysics, Том 358, № 2, 2000, стр. 451-461.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Pyatunina, TB, Marchenko, SG, Marscher, AP, Aller, MF, Aller, HD, Teräsranta, H & Valtaoja, E 2000, 'Radio variability of the gamma-ray blazar 0202+149', Astronomy and Astrophysics, Том. 358, № 2, стр. 451-461.

APA

Pyatunina, T. B., Marchenko, S. G., Marscher, A. P., Aller, M. F., Aller, H. D., Teräsranta, H., & Valtaoja, E. (2000). Radio variability of the gamma-ray blazar 0202+149. Astronomy and Astrophysics, 358(2), 451-461.

Vancouver

Pyatunina TB, Marchenko SG, Marscher AP, Aller MF, Aller HD, Teräsranta H и пр. Radio variability of the gamma-ray blazar 0202+149. Astronomy and Astrophysics. 2000;358(2):451-461.

Author

Pyatunina, T. B. ; Marchenko, S. G. ; Marscher, A. P. ; Aller, M. F. ; Aller, H. D. ; Teräsranta, H. ; Valtaoja, E. / Radio variability of the gamma-ray blazar 0202+149. в: Astronomy and Astrophysics. 2000 ; Том 358, № 2. стр. 451-461.

BibTeX

@article{ad126f9ae7f34308be1911bfae7ad673,
title = "Radio variability of the gamma-ray blazar 0202+149",
abstract = "Analysis of radio light curves of the γ-ray bright blazar 0202+149 at frequencies of 37, 22, 14.5,8, and 4.8 GHz during the period 1984-1998 reveals a 4-year cycle of variability with substructure on a shorter time scale of about 1.3-yr. The 4.8-37 GHz spectral index of the source gradually increases from -0.04 (T= 1990.2) to 0.4 (T= 1996.6) and during outbursts shows strong variations with a time scale of about 1 year and an amplitude up to ∼0.4. VLBI images at 8, 22, and 43 GHz show a core-dominated structure with a faint jet in the northwest direction, which we trace out to 7 mas, with a bent inner part (r ≤ 1 mas) consisting of at least 2 components. The connection of the jet activity with the 4-year cycle of total flux density variability is discussed.",
keywords = "Galaxies: active, Galaxies: quasars: individual: 0202+149, Radio continuum: galaxies",
author = "Pyatunina, {T. B.} and Marchenko, {S. G.} and Marscher, {A. P.} and Aller, {M. F.} and Aller, {H. D.} and H. Ter{\"a}sranta and E. Valtaoja",
year = "2000",
language = "English",
volume = "358",
pages = "451--461",
journal = "ASTRONOMY & ASTROPHYSICS",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "2",

}

RIS

TY - JOUR

T1 - Radio variability of the gamma-ray blazar 0202+149

AU - Pyatunina, T. B.

AU - Marchenko, S. G.

AU - Marscher, A. P.

AU - Aller, M. F.

AU - Aller, H. D.

AU - Teräsranta, H.

AU - Valtaoja, E.

PY - 2000

Y1 - 2000

N2 - Analysis of radio light curves of the γ-ray bright blazar 0202+149 at frequencies of 37, 22, 14.5,8, and 4.8 GHz during the period 1984-1998 reveals a 4-year cycle of variability with substructure on a shorter time scale of about 1.3-yr. The 4.8-37 GHz spectral index of the source gradually increases from -0.04 (T= 1990.2) to 0.4 (T= 1996.6) and during outbursts shows strong variations with a time scale of about 1 year and an amplitude up to ∼0.4. VLBI images at 8, 22, and 43 GHz show a core-dominated structure with a faint jet in the northwest direction, which we trace out to 7 mas, with a bent inner part (r ≤ 1 mas) consisting of at least 2 components. The connection of the jet activity with the 4-year cycle of total flux density variability is discussed.

AB - Analysis of radio light curves of the γ-ray bright blazar 0202+149 at frequencies of 37, 22, 14.5,8, and 4.8 GHz during the period 1984-1998 reveals a 4-year cycle of variability with substructure on a shorter time scale of about 1.3-yr. The 4.8-37 GHz spectral index of the source gradually increases from -0.04 (T= 1990.2) to 0.4 (T= 1996.6) and during outbursts shows strong variations with a time scale of about 1 year and an amplitude up to ∼0.4. VLBI images at 8, 22, and 43 GHz show a core-dominated structure with a faint jet in the northwest direction, which we trace out to 7 mas, with a bent inner part (r ≤ 1 mas) consisting of at least 2 components. The connection of the jet activity with the 4-year cycle of total flux density variability is discussed.

KW - Galaxies: active

KW - Galaxies: quasars: individual: 0202+149

KW - Radio continuum: galaxies

UR - http://www.scopus.com/inward/record.url?scp=0041124388&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0041124388

VL - 358

SP - 451

EP - 461

JO - ASTRONOMY & ASTROPHYSICS

JF - ASTRONOMY & ASTROPHYSICS

SN - 0004-6361

IS - 2

ER -

ID: 88370395