Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28224
DC Field | Value | Language |
---|---|---|
dc.contributor.author | BODO, Gianluigi | en_US |
dc.contributor.author | TAVECCHIO, Fabrizio | en_US |
dc.date.accessioned | 2020-11-09T14:18:13Z | - |
dc.date.available | 2020-11-09T14:18:13Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28224 | - |
dc.description.abstract | We present the results of state-of-the-art simulations of recollimation shocks induced by the interaction of a relativistic jet with an external medium, including the effect of radiative losses of the shocked gas. Our simulations confirm that - as suggested by earlier semi-analytical models - the post-shock pressure loss induced by radiative losses may lead to a stationary equilibrium state characterized by a very strong focusing of the flow, with the formation of quite narrow nozzles, with cross-sectional radii as small as 10<SUP>-3</SUP> times the length scale of the jet. We also study the time-dependent evolution of the jet structure induced by a density perturbation injected at the flow base. The set-up and the results of the simulations are particularly relevant for the interpretation of the observed rapid variability of the γ-ray emission associated to flat spectrum radio quasars. In particular, the combined effects of jet focusing and Doppler beaming on the observed radiation make it possible to explain the sub-hour flaring events such as that observed in the flat specrum radio quasar PKS 1222+216 by MAGIC. | en_US |
dc.language.iso | eng | en_US |
dc.title | Recollimation shocks and radiative losses in extragalactic relativistic jets | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201732000 | en_US |
dc.identifier.scopus | 2-s2.0-85041395638 | en_US |
dc.identifier.isi | 000429204300002 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2018/01/aa32000-17/aa32000-17.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 609 | en_US |
dc.relation.firstpage | A122 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 2 | en_US |
dc.description.international | no | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018A&A...609A.122B | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_10 High energy and particle astronomy – X-rays, cosmic rays, gamma rays, neutrinos | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.orcid | 0000-0002-9265-4081 | - |
crisitem.author.orcid | 0000-0003-0256-0995 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
recshock.pdf | preprint | 6.17 MB | Adobe PDF | View/Open |
aa32000-17.pdf | Pdf editoriale | 15.97 MB | Adobe PDF | View/Open |
28224-aa32000-17_P01.pdf | Miur | 8.35 MB | Adobe PDF | |
28224-aa32000-17_P02.pdf | Miur | 7.76 MB | Adobe PDF |
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