Bernoulli equation and the nonexistence of maximal jets

Andrzej A. Zdziarski

doi:10.1051/0004-6361/201527949

Free Access

Issue		A&A Volume 586, February 2016


Article Number		A18
Number of page(s)		2
Section		Astrophysical processes
DOI		https://doi.org/10.1051/0004-6361/201527949
Published online		20 January 2016

A&A 586, A18 (2016)

Research Note

Bernoulli equation and the nonexistence of maximal jets

Andrzej A. Zdziarski

Centrum Astronomiczne im. M. Kopernika, Bartycka 18, 00-716 Warszawa, Poland
e-mail: aaz@camk.edu.pl

Received: 12 December 2015
Accepted: 28 December 2015

Abstract

We discuss the idea of maximal jets introduced by Falcke & Biermann (1995, A&A, 293, 665). According to it, the maximum possible jet power in its internal energy equals the kinetic power in its rest mass. We show this result is incorrect because of an unfortunate algebraic mistake.

Key words: acceleration of particles / galaxies: jets / ISM: jets and outflows / magnetic fields / radiation mechanisms: non-thermal

© ESO, 2016

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