Guainazzi, Matteo

Hardcastle, Martin

Migliori, Giulia

Ostorero, Luisa

Siemiginowska, Aneta

Sobolewska, Malgorzata

Stawarz, Lukasz

English

Institutional Research Information System University of Turin

Sign onSAO/NASA ADS Astronomy Abstract Service· Find Similar Abstracts  (with default settings below )· Also-Read Articles  ( Reads History )·· Translate This PageTitle: X-ray Properties and the Environment of CompactRadio Sources.Authors: Siemiginowska, Aneta ; Sobolewska, Malgorzata ;Guainazzi, Matteo ; Hardcastle, Martin ;Migliori, Giulia ; Ostorero, Luisa ;Stawarz, LukaszAffiliation: AA(Harvard-Smithsonian Center for Astrophysics),AB(Harvard-Smithsonian Center for Astrophysics),AC(ESA), AD(University of Hertfordshire), AE(Lab.AIM/Univ. Paris Diderot Paris 7/CNRS/CEA-Saclay),AF(University of Torino), AG(Jagiellonian University)Publication: American Astronomical Society, AAS Meeting #231,id. 123.01PublicationDate:01/2018Origin: AASAbstractCopyright:(c) 2018: American Astronomical SocietyBibliographicCode: 2018AAS...23112301SX-ray Properties and the Environment of Compac... http://adsabs.harvard.edu/abs/2018AAS...23112301S1 of 3 1/28/19, 5:06 PMAbstractCompact extragalactic radio sources provide important insights intothe initial stages of radio source evolution and probe states of a blackhole activity at the time of the formation of the relativistic outflow.Such outflows propagate out to hundreds kpc distances from the originand impact environment on many scales, and thus influence evolutionof structures in the universe. These compact sources show radiofeatures typically observed in large-scale radio galaxies (jets, lobes, hotspots), but contained within the central 1 kpc region of the host galaxy.Compact Symmetric Objects (CSOs, a subclass of GigaHertz Peakedspectrum radio sources) are symmetric and not affected by beaming.Their linear radio size can be translated into a source age if onemeasures the expansion velocity of the radio structures. Such ages hasbeen measured for a small sample of CSOs. Using the Chandra X-rayObservatory and XMM-Newton we observed a pilot samples of 16 CSOsin X-rays (6 for the first time). Our results show heterogeneous natureof the CSOs X-ray emission indicating a range of AGN luminosities anda complex environment. In particular, we identified four Compton Thicksources with a dense medium (equivalent column > 1e24 cm^-2)capable of disturbing/slowing down the jet and confining the jet to asmall region. Thus for the first time we gain the observational evidencein X-ray domain in favor of the hypothesis that in a sub-population ofCSOs the radio jets may be confined by the dense X-ray obscuringmedium. As a consequence, the kinematic ages of these CSOs may beunderestimated.. We discuss the implications of our results on theemission models of CSOs, the earliest stages of the radio sourceevolution, jet interactions with the ISM, diversity of the environmentsin which the jets expand, and jet-galaxy co-evolution.Partial support forthis work was provided by the NASA grants GO1-12145X, GO4-15099X,NNX10AO60G, NNX17AC23G and XMM AO15 project 78461. Thiswork supported in part by NASA under contract NAS 8-03060 to theSmithsonian Astrophysical Observatory for operation of the ChandraX-ray Center.Bibtex entry for this abstract    Preferred format for this abstract  (see Preferences )X-ray Properties and the Environment of Compac... http://adsabs.harvard.edu/abs/2018AAS...23112301S2 of 3 1/28/19, 5:06 PMSubmit corrections to this record View record in the new ADSFind Similar Abstracts:Use: AuthorsTitleAbstractTextReturn: QueryResultsReturn 100    items starting withnumber 1Query FormDatabase: AstronomyPhysicsarXive-prints     Send Query              Reset     X-ray Properties and the Environment of Compac... http://adsabs.harvard.edu/abs/2018AAS...23112301S3 of 3 1/28/19, 5:06 PM

X-ray Properties and the Environment of Compact Radio Sources.

https://iris.unito.it/bitstream/2318/1688245/1/2018siemiginowska_AAS231.pdf

X-ray Properties and the Environment of Compact Radio Sources.

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