We estimate the power of relativistic, extragalactic jets by modelling the spectral energy distribution of a large number of blazars. We adopt a simple one-zone, homogeneous, leptonic synchrotron and inverse Compton model, taking into account seed photons originating both locally in the jet and externally. The blazars under study have an often dominant high-energy component which, if interpreted as due to inverse Compton radiation, limits the value of the magnetic field within the emission region. As a consequence, the corresponding Poynting flux cannot be energetically dominant. Also the bulk kinetic power in relativistic leptons is often smaller than the dissipated luminosity. This suggests that the typical jet should comprise an energetically dominant proton component. If there is one proton per relativistic electrons, jets radiate around 2-10 per cent of their power in high-power blazars and 3-30 per cent in less powerful BL Lacs.

The power of blazar jets / Celotti, Anna Lisa; Ghisellini, G.. - In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. - ISSN 0035-8711. - 385:1(2008), pp. 283-300. [10.1111/j.1365-2966.2007.12758.x]

The power of blazar jets

Celotti, Anna Lisa;
2008-01-01

Abstract

We estimate the power of relativistic, extragalactic jets by modelling the spectral energy distribution of a large number of blazars. We adopt a simple one-zone, homogeneous, leptonic synchrotron and inverse Compton model, taking into account seed photons originating both locally in the jet and externally. The blazars under study have an often dominant high-energy component which, if interpreted as due to inverse Compton radiation, limits the value of the magnetic field within the emission region. As a consequence, the corresponding Poynting flux cannot be energetically dominant. Also the bulk kinetic power in relativistic leptons is often smaller than the dissipated luminosity. This suggests that the typical jet should comprise an energetically dominant proton component. If there is one proton per relativistic electrons, jets radiate around 2-10 per cent of their power in high-power blazars and 3-30 per cent in less powerful BL Lacs.
2008
385
1
283
300
https://doi.org/10.1111/j.1365-2966.2007.12758.x
Celotti, Anna Lisa; Ghisellini, G.
File in questo prodotto:
File Dimensione Formato  
2008MNRAS_385__283C.pdf

accesso aperto

Tipologia: Versione Editoriale (PDF)
Licenza: Creative commons
Dimensione 638.33 kB
Formato Adobe PDF
638.33 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/13168
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 360
  • ???jsp.display-item.citation.isi??? 350
social impact