2017A&A...607A..40M


Query : 2017A&A...607A..40M

2017A&A...607A..40M - Astronomy and Astrophysics, volume 607A, 40-40 (2017/11-1)

Unveiling the physics behind the spectral variations of changing-look quasars with optical polarimetry.

MARIN F.

Abstract (from CDS):

A handful of active galactic nuclei (AGN) have shown strong spectral variations in the optical band between epochs that are years apart. The appearance or disappearance of broad emission lines in their spectra completely changes their classification. Since their nucleus orientation cannot change on such short timescales, another physical interpretation has to be found. Several scenarios have been offered to explain their changing-look nature, and for the first time, we conduct polarized radiative transfer Monte Carlo simulations for all the models. We demonstrate that all interpretations have distinctive features in both total optical flux and continuum polarization, such as suggested by pioneering previous observations. Distinguishing between the different scenarios is thus straightforward. We apply our results on the changing-look quasar J1011+5442 and confirm the conclusions found previously: in this specific case, the disappearance of the broad emission lines is due to a change in accretion rate.

Abstract Copyright: © ESO, 2017

Journal keyword(s): galaxies: active - galaxies: Seyfert - polarization - radiative transfer - scattering - scattering

Simbad objects: 8

goto Full paper

goto View the references in ADS

Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 2MASS J01595763+0033105 Sy1 01 59 57.6419121888 +00 33 10.497849444   20.31 19.66     ~ 97 0
2 Mrk 1018 Sy1 02 06 15.9896281128 -00 17 29.221733688   15.90 15.50 10.3   ~ 346 0
3 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4632 2
4 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1823 2
5 2MASS J10115298+5442063 Sy1 10 11 52.9792003320 +54 42 06.373633896   18.62 18.31     ~ 48 0
6 IC 751 Sy2 11 58 52.597 +42 34 13.23   15.39 14.39     ~ 85 1
7 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3719 2
8 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14643 0

To bookmark this query, right click on this link: simbad:objects in 2017A&A...607A..40M and select 'bookmark this link' or equivalent in the popup menu