A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
A helical jet model for OJ287
Tekijät: Valtonen M, Pihajoki P
Kustantaja: EDP SCIENCES S A
Julkaisuvuosi: 2013
Journal: Astronomy and Astrophysics
Tietokannassa oleva lehden nimi: ASTRONOMY & ASTROPHYSICS
Lehden akronyymi: ASTRON ASTROPHYS
Artikkelin numero: ARTN A28
Vuosikerta: 557
Aloitussivu: 1
Lopetussivu: 5
Sivujen määrä: 5
ISSN: 0004-6361
DOI: https://doi.org/10.1051/0004-6361/201321754
Tiivistelmä
Results. We find that this model reproduces the observations well if the changes in the axis of the conical helix propagate outwards with a relativistic speed of about 0.85c. In particular, this model explains at the same time the long-term optical brightness variations as varying Doppler beaming in a component close to the core, i.e., at parsec scale in real linear distance, while the mm and cm radio jet observations are explained as being due to jet wobble at much larger (100 parsec scale) distances from the core.
Results. We find that this model reproduces the observations well if the changes in the axis of the conical helix propagate outwards with a relativistic speed of about 0.85c. In particular, this model explains at the same time the long-term optical brightness variations as varying Doppler beaming in a component close to the core, i.e., at parsec scale in real linear distance, while the mm and cm radio jet observations are explained as being due to jet wobble at much larger (100 parsec scale) distances from the core.
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