IIA Institutional Repository

Spectropolarimetric view of the gamma-ray emitting NLS1 1H0323 + 342

Show simple item record

dc.contributor.author Jose, Jincen
dc.contributor.author Rakshit, Suvendu
dc.contributor.author Panda, Swayamtrupta
dc.contributor.author Woo, Jong-Hak
dc.contributor.author Stalin, C. S
dc.contributor.author Neha, Sharma
dc.contributor.author Pandey, Shivangi
dc.date.accessioned 2024-09-17T05:16:00Z
dc.date.available 2024-09-17T05:16:00Z
dc.date.issued 2024-08
dc.identifier.citation Monthly Notices of the Royal Astronomical Society, Vol. 532, No. 3, pp. 3187–3197 en_US
dc.identifier.issn 0035-8711
dc.identifier.uri http://hdl.handle.net/2248/8532
dc.description Open Access en_US
dc.description This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.description.abstract The gamma-ray emitting narrow-line Seyfert 1 galaxies are a unique class of objects that launch powerful jets from relatively lower-mass black hole systems compared to the Blazars. However, the black hole masses estimated from the total flux spectrum suffer from the projection effect, making the mass measurement highly uncertain. The polarized spectrum provides a unique view of the central engine through scattered light. We performed spectropolarimetric observations of the gamma-ray emitting narrow-line Seyfert 1 galaxy 1H0323 + 342 using SPOL/MMT. The degree of polarization and polarization angle are 0.122 ± 0.040 per cent and 142 ± 9 degrees, while the H α line is polarized at 0.265 ± 0.280 per cent. We decomposed the total flux spectrum and estimated broad H α full width at half maximum of 1015 km s−1. The polarized flux spectrum shows a broadening similar to the total flux spectrum, with a broadening ratio of 1.22. The Monte Carlo radiative transfer code ‘STOKES’ applied to the data provides the best fit for a small viewing angle of 9–24 deg and a small optical depth ratio between the polar and the equatorial scatters. A thick broad-line region with significant scale height can explain a similar broadening of the polarized spectrum compared to the total flux spectrum with a small viewing angle. en_US
dc.language.iso en en_US
dc.publisher Oxford University Press on behalf of Royal Astronomical Society en_US
dc.relation.uri https://doi.org/10.1093/mnras/stae1691
dc.rights © 2024 The Author(s)
dc.subject Radiative transfer en_US
dc.subject Methods: data analysis en_US
dc.subject Techniques: polarimetric en_US
dc.subject Techniques: spectroscopic en_US
dc.subject Galaxies: active en_US
dc.title Spectropolarimetric view of the gamma-ray emitting NLS1 1H0323 + 342 en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account