VLBA Observations of HI in the Archetype Compact Symmetric Object B2352 495 - Astrophysics > Cosmology and Nongalactic AstrophysicsReport as inadecuate




VLBA Observations of HI in the Archetype Compact Symmetric Object B2352 495 - Astrophysics > Cosmology and Nongalactic Astrophysics - Download this document for free, or read online. Document in PDF available to download.

Abstract: B2352+495 is a prototypical example of a Compact Symmetric Object CSO. Ithas a double radio lobe symmetrically located with respect to a central flatspectrum radio core the location of the AGN and has a physical extent of lessthan 200 pc. In this work we report VLBA observation of 21 cm HI absorptiontoward B2352+495 to investigate the properties of this remarkable radio source,in particular, to explore whether the radio emission can be confined bycircumnuclear material frustration scenario or whether the source is likelyto be young. We confirmed the two HI absorption features previously detectedtoward B2352+495 - a broad line nearly centered at the systemic velocity of thegalaxy and a narrow redshifted component. The atomic gas from the broadabsorption component is likely associated with circumnuclear material,consistent with the current paradigm of clumpy HI distribution in toroidalstructures around supermassive black holes.



Author: E. D. Araya 1,2,3, C. Rodriguez 2, Y. Pihlstrom 2,4, G. B. Taylor 2,4, S. Tremblay 2, R. C. Vermeulen 5 1 National Radio Astronom

Source: https://arxiv.org/







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