7 papers
Potential binary supermassive black holes in Markarian 231 as a scientific case for the spectropolarimeter POLLUX
Biedermann. J, Marin. F, Neiner. C +1
It is now widely accepted that a supermassive black hole (SMBH) resides in the core of nearly every galaxy. Within the context of mergers of galaxies, the central SMBHs from each s…
Probing binary supermassive black hole in quasars tough spectropolarimetry
J. Biedermann, F. Marin
Nearly all galaxies are believed to host a supermassive black hole at their center. In the context of galaxy mergers, the SMBHs from the progenitor galaxies are expected to form a…
Optical spectropolarimetry of extreme H line profiles in seven active galactic nuclei
J. Biedermann, F. Marin, D. Hutsemékers +1
Some active galactic nuclei (AGNs) are known to show extremely asymmetric broad Balmer lines, with their main peak redshifted or blueshifted by thousands of km s, severely c…
Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory
Courtney D. Dressing, Danica Adams, Evelyne Alecian +324
The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…
Spectropolarimetry of NGC 1275 reveals a narrow-line radio galaxy with polarization parallel to its radio jet axis
F. Marin, T. Pursimo, I. Liodakis +4
Concomitant with the Imaging X-ray Polarimetry Explorer (IXPE) observation of the Perseus cluster, we obtained optical spectropolarimetry of its central active galactic nucleus, NG…
Unveiling supermassive black hole binaries with FUV-to-NIR spectropolarimetry
Frédéric Marin, Julie Biedermann, Thibault Barnouin
In this proceedings, we review the importance and complexity of detecting and characterizing supermassive binary black holes using conventional techniques (spectroscopy, timing, im…
Polarimetric insights into a potential binary supermassive black hole system in Mrk 231
J. Biedermann, F. Marin, T. Barnouin
Markarian 231 (Mrk 231) is one of the brightest ultraluminous infrared galaxies (ULIRGs) known to date. It displays a unique optical-UV spectrum, characterized by a strong and perp…