173 citations · 2.1k across the 81 of their papers we have counts for
23 papers · 1 filter
Prospects for the polarimetric mapping of the Sgr A molecular cloud complex with IXPE
Riccardo Ferrazzoli, Laura Di Gesu, Immacolata Donnarumma +5
The X-ray polarization degree of the molecular clouds that surround Sgr A* is expected to be greatly lowered because the polarized reflection emission is mixed with the unpolarized…
High angular resolution polarimetric imaging of the nucleus of NGC 1068: Disentangling the polarising mechanisms
L. Grosset, D. Rouan, F. Marin +8
Polarisation is a decisive method to study the inner region of active galactic nuclei (AGNs) since it is not affected by contrast issues similarly to how classical imaging is. When…
Spectropolarimetry of the changing-look active galactic nucleus Mrk 1018
Damien Hutsemékers, Beatriz Agís González, Frédéric Marin +1
We have obtained new spectropolarimetric observations at visible wavelengths of the changing-look active galactic nucleus (AGN) Mrk 1018. The AGN direct spectrum shows an extremely…
The polarized spectral energy distribution of NGC 4151
F. Marin, J. Le Cam, E. Lopez-Rodriguez +3
NGC 4151 is among the most well-studied Seyfert galaxies that does not suffer from strong obscuration along the observer's line-of-sight. This allows to probe the central active ga…
Continuum polarization reverberation mapping of AGNs
P. A. Rojas Lobos, R. W. Goosmann, J. M. Hameury +1
The determination of the size and geometry of the broad line region (BLR) in active galactic nuclei is one of the major ingredients for determining the mass of the accreting black…
Tracking the state transitions in changing-look active galactic nuclei through their polarized-light echoes
F. Marin, D. Hutsemékers
Context: Variations in the mass accretion rate appear to be responsible for the rapid transitions in spectral type that are observed in increasingly more active galactic nuclei (AG…
Changing-look Seyfert galaxies with optical linear polarization measurements
F. Marin, D. Hutsemékers, B. Agís González
In this lecture note, we make the case for new (spectro)polarimetric measurements of "changing-look" AGNs (CLAGNs), a subclass of the AGN family tree that shows long-term (months t…
Polarization of changing-look quasars
D. Hutsemékers, B. Agís González, F. Marin +3
If the disappearance of the broad emission lines observed in changing-look quasars originates from the obscuration of the quasar core by dusty clouds moving in the torus, high line…
Predicting the broad lines polarization emitted by supermassive binary black holes
Đ. Savić, F. Marin, L. Č. Popović
Some Type-1 active galactic nuclei (AGNs) are showing extremely asymmetric Balmer lines with the broad peak redshifted or blueshifted by thousands of km/s. These AGNs may be good c…
A complete disclosure of the hidden type-1 AGN in NGC 1068 thanks to 52 years of broadband polarimetric observation
F. Marin
We create the first broadband polarization spectrum of an active galactic nucleus (AGN) by compiling the 0.1 - 100 microns, 4.9 GHz and 15 GHz continuum polarization of NGC 1068 fr…
Thick turbulent gas disks with magnetocentrifugal winds in active galactic nuclei - Model infrared emission and optical polarization
B. Vollmer, M. Schartmann, L. Burtscher +4
(Abridged) Infrared high-resolution imaging and interferometry have shown that the dust distribution is frequently elongated along the polar direction of an AGN. To explain these f…
AGN Black hole mass estimates using polarization in broad emission Lines
Đ. Savić, R. Goosmann, L. Č. Popović +2
The innermost regions in active galactic nuclei (AGNs) were not being spatially resolved so far but spectropolarimetry can provide us insight about their hidden physics and the geo…
Exploring the inner parsecs of Active Galactic Nuclei using near-infrared high resolution polarimetric simulations with MontAGN
Lucas Grosset, Daniel Rouan, Damien Gratadour +4
Aims: In this paper, we aim to constrain the properties of dust structures in the central first parsecs of Active Galactic Nuclei (AGN). Our goal is to study the required optical d…
Polarized radiative transfer modeling of warped and clumpy dusty tori
F. Marin, M. Schartmann
Context: Active galactic nuclei (AGN) are anisotropic objects surrounded by an optically thick equatorial medium whose true geometry still defy observers. Aims: In this paper, we a…
Understanding active galactic nuclei using near-infrared high angular resolution polarimetry I : MontAGN - stokes comparison
Lucas Grosset, Frédéric Marin, Damien Gratadour +5
In this first research note of a series of two, we present a comparison between two Monte Carlo radiative transfer codes: MontAGN and STOKES. Both were developed in order to better…
Modeling the reverberation of optical polarization in AGN
P. Andrea Rojas Lobos, Rene W. Goosmann, Frederic Marin
According to the standard paradigm, the strong and compact luminosity of active galactic nuclei (AGN) is due to multi-temperature black body emission originating from an accretion…
Understanding Active Galactic Nuclei using near-infrared high angular resolution polarimetry II: Preliminary results
F. Marin, L. Grosset, R. Goosmann +5
In this second research note of a series of two, we present the first near-infrared results we obtained when modeling Active Galactic Nuclei (AGN). Our first proceedings showed the…
A robust derivation of the tight relationship of radio core dominance to inclination angle in high redshift 3CRR sources
Frederic Marin, Robert Antonucci
It is believed that, in radio-loud active galactic nuclei (AGN), the core radio flux density can be normalized to the flux density of the extended lobe emission to infer the orient…
Are there reliable methods to estimate the nuclear orientation of Seyfert galaxies?
F. Marin
Orientation, together with accretion and evolution, is one of the three main drivers in the Grand Unification of Active Galactic Nuclei (AGN). Being unresolved, determining the tru…
Reflection nebulae in the Galactic Center: the case for soft X-ray imaging polarimetry
F. Marin, F. Muleri, P. Soffitta +2
The origin of irradiation and fluorescence of the 6.4 keV bright giant molecular clouds surrounding Sgr A*, the central supermassive black hole of our Galaxy, remains enigmatic. Te…
2004 - 2014: Ten years of radiative transfer with STOKES
F. Marin, R. W. Goosmann
Since it became publicly available in 2004, the radiative transfer code STOKES has been used to model the spectroscopic, polarimetric, timing and imaging signatures for different a…
Prospects of 3D mapping of the Galactic Centre clouds with X-ray polarimetry
F. Marin, V. Karas, D. Kunneriath +1
Despite past panchromatic observations of the innermost part of the Milky Way, the overall structure of the Galactic Centre (GC) remains enigmatic in terms of geometry. In this pap…
A compendium of AGN inclinations with corresponding UV/optical continuum polarization measurements
F. Marin
The anisotropic nature of active galactic nuclei (AGN) is thought to be responsible for the observational differences between type-1 (pole-on) and type-2 (edge-on) nearby Seyfert-l…