Jets from Subparsec to Kiloparsec Scales: A Physical Connection

Bibcode
2004ApJ...614...64T
DOI
10.1086/422985
Tavecchio, F.; Maraschi, L.; Sambruna, R. M.; Urry, C. M.; Cheung, C. C.; Gambill, J. K.; Scarpa, R.
Referencia bibliográfica

The Astrophysical Journal, Volume 614, Issue 1, pp. 64-68.

Fecha de publicación:
10
2004
Revista
The Astrophysical Journal
Número de autores
7
Número de autores del IAC
0
Número de citas
38
Número de citas referidas
33
Descripción
The Chandra discovery of bright X-ray emission from kiloparsec-scale jets allows insight into the physical parameters of the jet flow at large scales. At the opposite extreme, extensive studies of the inner relativistic jets in blazars with multiwavelength observations yield comparable information on subparsec scales. In the framework of simple radiation models for the emission regions we compare the physical parameters of jets on these two very different scales in the only two well-studied blazars for which large-scale emission has been resolved by Chandra. Notably, we find that the relativistic Doppler factors and powers derived independently at the two scales are consistent, suggesting that the jet does not suffer severe deceleration or dissipation. Moreover, the internal equipartition pressures in the inner jet and in the external X-ray-bright knots scale inversely with the jet cross section as expected in the simple picture of a freely expanding jet in equipartition.
Tipo
Con árbitro
Galaxias
Chorros
Cuásares

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