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Dr Marco Chiaberge (STSCI)16/09/2019, 14:00
We have been using the Hubble Space Telescope for over 2 decades to study the 3C(R) sample of extragalactic radio sources and their environment. We discovered new optical jets, nuclear dusty disks, point-like nuclear sources in low-power radio galaxies that allowed to directly test the FRI-BL Lac unification model. We revealed unexpected complex UV morphologies at low-z, indicative of ongoing...
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Dr Isabella Prandoni16/09/2019, 14:30
A wealth of new data from upgraded and new radio interferometers are rapidly improving and transforming our understanding of the faint extra-galactic radio sky. Indeed the mounting statistics at sub-mJy and μJy flux levels is finally allowing us to get stringent observational constraints on the faint radio population, and on the modeling of its various components. In this talk I will provide a...
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Katarzyna Rusinek (Nicolaus Copernicus Astronomical Center Polish Academy of Sciences)16/09/2019, 15:00
Comparison of properties of quasars with those of low redshift AGNs with similar BH masses but accreting at much lower accretion rates provides exceptional opportunity to study the dependence of the properties of these massive accretion systems on the specific accretion rate. This particularly concerns abilities of such systems to produce powerful jets. We present here results of comparison of...
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Dr Belinda Wilkes (SAO)16/09/2019, 16:00
The complex nuclear structures of active galactic nuclei (AGN)
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lead to strong selection effects in most wavebands, including the X-ray.
Highly obscured AGN are hard to find, and identify. Estimating their
numbers, a function of luminosity and redshift, remains a major quest
both for AGN science, and in understanding the level of accretion
power particularly in the early Universe.... -
Ana Jimenez-Gallardo (Dipartimento di Fisica, Università degli Studi di Torino)16/09/2019, 16:30
We carried out an extensive X-ray analysis of the surface brightness profiles of a sample of FRII radio galaxies. We aimed at assessing the extension of the X-ray diffuse emission along the radio structure as well as in the cross-cone direction perpendicular to the radio axis. We also addressed the hotspot detection significance over the local X-ray background. To obtain a complete...
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Duccio Macconi (OAS-Bologna, DIFA Bologna)16/09/2019, 16:50
Radio Galaxies (RG) are Radio-Loud Active Galactic Nuclei (AGN) characterized by powerful relativistic jets, oriented at relatively large inclination angles with respect to the observer’s line of sight. They are extraordinarily relevant to address important issues such as the interaction between Super Massive Black Holes, the radio jets and their environment.
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RGs are commonly classified on the... -
Prof. Minfeng Gu (Shanghai Astronomical Observatory, CAS)16/09/2019, 17:10
The 3C RR radio catalog is a low-frequency radio-selected sample, and is one of the most well-studied radio samples on multi-band. The uniqueness of the sample enables us to study the emission of AGNs at various aspects. In this talk, we will give our results about the composite X-ray spectrum of 3C RR quasars, and the pc-scale structure of 3C RR radio galaxies. The composite SED of radio-loud...
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Isabella Prandoni (INAF)
A wealth of new data from upgraded and new radio interferometers are rapidly improving and transforming our understanding of the faint extra-galactic radio sky. Indeed the mounting statistics at sub-mJy and μJy flux levels is finally allowing us to get stringent observational constraints on the faint radio population, and on the modeling of its various components. In this talk I will provide...
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