8–13 Sept 2019
Europe/Rome timezone
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The XMM-Newton and NuSTAR monitoring campaign of MrK 359: a close view of the inner flows

13 Sept 2019, 18:12
2m

Speaker

Riccardo Middei (Università degli Studi Roma Tre)

Description

We conducted a broadband multi-epoch campaign to observe the nearby Narrow Line Seyfert 1 galaxy Mrk 359. The monitoring consisted in 5 simultaneous XMM-Newton/NuSTAR observations (50 ks each) over a timescale of 10 days. During the campaign, Mrk 359 showed significant intra-observation variability, as well as among the pointings. Changes in the spectral slope occurred down to days timescales. A remarkable and variable soft-excess dominates the soft X-ray band.
Besides a prominent and variable Fe Kalpha emission line, statistically significant absorption features at higher energies are also observed suggesting the presence of outflowing material.
We report on the broadband phenomenological modelling which reproduces the data-set, with particular emphasis on physically motivated Comptonisation models in a two-corona scenario.
Finally, the obtained results on Mrk 359 will be discussed and compared with outcomes from similar monitorings performed in the past.

Affiliation Roma Tre
Topic Active Galactic Nuclei: accretion physics and evolution across cosmic time

Primary author

Riccardo Middei (Università degli Studi Roma Tre)

Co-authors

Stefano Bianchi (Università degli Studi Roma Tre) Dr Pierre-Olivier Petrucci Francesco Ursini (Istituto Nazionale di Astrofisica (INAF)) Prof. Giorgio Matt (Università Roma Tre) Alessandra De Rosa (Istituto Nazionale di Astrofisica (INAF)) Dr Maïca Clavel Andrea Marinucci (Università Roma Tre) Alessia Tortosa (Istituto Nazionale di Astrofisica (INAF))

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