Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/30919
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cavaliere, A. | en_US |
dc.contributor.author | TAVANI, MARCO | en_US |
dc.contributor.author | VITTORINI, VALERIO | en_US |
dc.date.accessioned | 2021-04-26T14:22:19Z | - |
dc.date.available | 2021-04-26T14:22:19Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/30919 | - |
dc.description.abstract | We study particle acceleration and radiative processes in blazar jets under recurring conditions set by gravitational perturbations in supermassive binary systems. We consider the action from a companion orbiting a primary black hole of ∼ {10}<SUP>8</SUP> {M}<SUB>⊙ </SUB>, and perturbing its relativistic jet. We discuss how such conditions induce repetitive magneto-hydrodynamic stresses along the jet, and affect its inner electron acceleration and radiative processes. Specifically, we study how macroscopic perturbations related to increased jet “magnetization” end up in higher radiative outputs in the optical, X-ray, and gamma-ray bands. We first find an increase in magnetic field strength, as gauged in the optical band from the synchrotron emission of electrons accelerated in kinetic processes stimulated by reconnecting magnetic lines. The energetic electrons then proceed to up-scatter the synchrotron photons to GeV energies after the canonical synchrotron self-Compton radiation process. Our model implies a specific recurring pattern in the optical to gamma-ray emissions, made of high peaks and wide troughs. Progressing accelerations caused by spreading reconnections will produce an additional synchrotron keV component. Such outbursts provide a diagnostics for enhanced acceleration of electrons, which can up-scatter photons into the TeV range. We discuss how our model applies to the BL Lac object PG 1553+113, arguably the best candidate to now for high amplitude, recurring modulations in its gamma-ray emissions. We also consider other BL Lacs showing correlated keV-TeV radiations such as Mrk 421. | en_US |
dc.language.iso | eng | en_US |
dc.title | Blazar Jets Perturbed by Magneto-gravitational Stresses in Supermassive Binaries | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/836/2/220 | en_US |
dc.identifier.scopus | 2-s2.0-85014322673 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/836/2/220 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 836 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 220 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 3 | 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 | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017ApJ...836..220C | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering | en_US |
dc.description.apc | sì | 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 | IAPS Roma | - |
crisitem.author.dept | IAPS Roma | - |
crisitem.author.orcid | 0000-0003-2893-1459 | - |
crisitem.author.orcid | 0000-0002-1208-8818 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Cavaliere_2017_ApJ_836_220.pdf | Pdf editoriale | 742.23 kB | Adobe PDF | View/Open |
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