Issue |
A&A
Volume 414, Number 3, February II 2004
|
|
---|---|---|
Page(s) | 943 - 947 | |
Section | Interstellar and circumstellar matter | |
DOI | https://doi.org/10.1051/0004-6361:20034120 | |
Published online | 27 January 2004 |
Bubbles in planetary nebulae and clusters of galaxies: Jet properties*
1
Department of Physics, Technion-Israel Institute of Technology, 32000 Haifa, Israel
2
Department of Physics, Oranim, Israel
Corresponding author: soker@physics.technion.ac.il
Received:
28
July
2003
Accepted:
6
September
2003
I derive constraints on jet properties for inflating pairs
of bubbles in planetary nebulae and clusters of galaxies.
This work is motivated by the similarity in morphology and some
non-dimensional quantities between X-ray-deficient bubbles in clusters
of galaxies and the optical-deficient bubbles in planetary nebulae,
which were pointed out in an earlier work.
In the present Paper I find that for inflating fat bubbles, the
opening angle of the jets must be large, i.e., the half opening
angle measured from the symmetry axis of the jets should typically be
.
For such wide-opening angle jets, a collimated fast wind (CFW)
is a more appropriate term.
Narrow jets will form elongated lobes rather than fat bubbles.
I emphasize the need to include jets with large opening angle,
i.e.,
, in simulating bubble inflation
in both planetary nebulae and (cooling flow) clusters of galaxies.
Key words: galaxies: clusters: general / planetary nebulae: general / intergalactic medium / ISM: jets and outflows
© ESO, 2004
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