Elucidating the global distribution of reprocessing gas in NGC 1194
| dc.contributor.author | Turner, T. J. | |
| dc.contributor.author | Reeves, J. N. | |
| dc.contributor.author | Braito, V. | |
| dc.contributor.author | Yaqoob, T. | |
| dc.contributor.author | Kraemer, S. B. | |
| dc.contributor.author | Severgnini, P. | |
| dc.date.accessioned | 2020-08-17T15:58:38Z | |
| dc.date.available | 2020-08-17T15:58:38Z | |
| dc.date.issued | 2020-08-10 | |
| dc.description.abstract | A joint XMM-Newton and NuSTAR observation was conducted for the bright, local Seyfert 1.9 galaxy, NGC 1194. The hard spectral form of this AGN was modeled using the toroidal reprocessor MYTORUS. The decoupled model form provides a good description of the spectrum, with reflection arising from gas with a global average column density > 4 x 10^24 cm^-2 and transmission of the continuum through an order-of-magnitude lower column. In this model, the reflection strength is a factor ~3 higher than expected from a simple torus. Such a result may indicate that much of the intrinsic X-ray continuum is hidden from view. An alternative model is that of a patchy torus, where 85% of sight-lines are obscured by Compton-thick gas and the remaining 15% by Compton-thin gas. The patchy torus model is based on a solar abundance of Fe and is consistent with X-ray partial-covering results found in other AGN. That a patchy torus model would relieve the issue with the strength of the reflection signature is not an intuitive result: such an insight regarding the geometry of the global reprocessing gas could not have been obtained using ad hoc model components to describe the spectral form. | en_US |
| dc.description.sponsorship | This paper is dedicated to the memory of Ian Michael George (1963-2020). The best colleague and friend we could have ever hoped for. TJT acknowledges support from NASA grant 80NSSC20K0028. Valentina Braito and Paola Severgnini acknowledge financial contribution from the agreements ASI-INAF n.2017-14-H.0. We are grateful to the XMMNewton and NuSTAR operations teams for performing this campaign and providing software and calibration for the data analysis. | en_US |
| dc.description.uri | https://arxiv.org/abs/2007.04366 | en_US |
| dc.format.extent | 11 pages | en_US |
| dc.genre | journal articles preprints | en_US |
| dc.identifier | doi:10.13016/m29sl0-cnof | |
| dc.identifier.citation | T. J. Turner, J. N. Reeves, V. Braito, T. Yaqoob, S. B. Kraemer and P. Severgnini, Elucidating the global distribution of reprocessing gas in NGC 1194, https://arxiv.org/abs/2007.04366 | en_US |
| dc.identifier.uri | http://hdl.handle.net/11603/19436 | |
| dc.language.iso | en_US | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.relation.ispartof | UMBC Physics Department | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.title | Elucidating the global distribution of reprocessing gas in NGC 1194 | en_US |
| dc.type | Text | en_US |