AstroFIt 2 – COFUND fellow since December 1, 2016.
Project ended on November 30, 2019.
INAF Research Centre: Osservatorio Astrofisico di Arcetri
Email: emanuele.nardini at inaf.it
In the media:
- High Resolution X-ray Spectroscopy of the Seyfert 1, Mrk 1040. Revealing the Failed Nuclear Wind with Chandra (The Astrophysical Journal, 01/2/2017)
- A high spectral resolution map of the nuclear emitting regions of NGC 7582 (Astronomy & Astrophysics, 16/2/2017)
- Spatially resolved Fe K spectroscopy of NGC 4945 (Monthly Notices of the Royal Astronomical Society, 21/6/2017)
- Nuclear absorption and emission in the AGN merger NGC 6240: the hard X-ray view (Monthly Notices of the Royal Astronomical Society, 20/7/2017)
- A deep X-ray view of the bare AGN Ark120. IV. XMM-Newton and NuSTAR spectra dominated by two temperature (warm, hot)
Comptonization processes (Astronomy & Astrophysics, 28/7/2017)
- Evidence for a radiatively driven disc-wind in PDS 456? (Monthly Notices of the Royal Astronomical Society, 17/8/2017)
- Bulk Comptonization: new hints from the luminous blazar 4C+25.05 (Monthly Notices of the Royal Astronomical Society, 4/10/2017)
- A deep X-ray view of the bare AGN Ark 120. III. X-ray timing analysis and multiwavelength variability (Monthly Notices of the Royal Astronomical Society, 7/11/2017)
- Does the X-ray outflow quasar PDS 456 have a UV outflow at 0.3c? (Monthly Notices of the Royal Astronomical Society, 9/1/2018)
- A New Relativistic Component of Accretion Disk Wind in PDS 456 (The Astrophysical Journal Letters, 10/2/2018)
- Testing the accuracy of reflection-based supermassive black hole spin measurements in AGN (Astronomy & Astrophysics, 28/2/2018)
- Multi-phase outflows as probes of AGN accretion history (Monthly Notices of the Royal Astronomical Society, 2/5/2018)
- Tracking the Iron Kα line and the Ultra Fast Outflow in NGC 2992 at different accretion states (Monthly Notices of the Royal Astronomical Society, 1/6/2018)
- X-Ray Properties of AGN in Brightest Cluster Galaxies. I. A Systematic Study of the Chandra Archive in the 0.2 < z < 0.3 and 0.55 < z < 0.75 Redshift Range (The Astrophysical Journal, 20/6/2018)
- Spectral and polarimetric signatures of X-ray eclipses in AGN (Monthly Notices of the Royal Astronomical Society, 31/7/2018)
- MAGNUM survey: A MUSE-Chandra resolved view on ionized outflows and photoionization in the Seyfert galaxy NGC 1365 (Astronomy & Astrophysics, 6/9/2018)
- Resolving the X-ray obscuration in a low flux observation of the quasar PDS 456 (The Astrophysical Journal, 20/9/2018)
- Towards an informed quest for accretion disc winds in quasars: the intriguing case of Ton 28 (Monthly Notices of the Royal Astronomical Society, 3/11/2018)
- Tension with the flat ΛCDM model from a high-redshift Hubble diagram of supernovae, quasars, and gamma-ray bursts (Astronomy & Astrophysics, 6/8/2019)
- The most luminous blue quasars at 3.0<z <3.3 – I. A tale of two X-ray populations (Astronomy & Astrophysics, 19/11/2019)
- X-ray, UV and optical time delays in the bright Seyfert galaxy Ark 120 with co-ordinated Swift and ground-based observations (Monthly Notices of the Royal Astronomical Society, 4/3/2020)
- Resolving the soft X-ray ultra fast outflow in PDS 456 (The Astrophysical Journal, 22/5/2020)
Project title: SMBHwind – Black Hole Feedback: Towards the Unification of Outflows in Active Galactic Nuclei
In the centre of almost every galaxy resides a supermassive black hole (SMBH) equivalent to several millions/billions of Suns. The striking correlation between its mass and the properties of the host galaxy suggests that some kind of mutual influence has been in place during most of the SMBH growth phase. While the proof for such a SMBH/host galaxy co-evolution is still missing, outflows are often invoked as the underlying physical mechanism. Indeed, due to the huge amount of energy released via SMBH accretion, in Active Galactic Nuclei (AGN) the radiation pressure can be so intense to expel the gas from the central regions and push it outwards throughout the galaxy.
Outflow signatures arising over a wide range of distances from the nuclear SMBHs have now been detected in a significant fraction of AGN in the form of X-ray, UV and far-IR absorption features, or spatially resolved, broad emissione-line wings. The inferred mass outflow rates on kpc scales are capable of depleting the gas reservoir available to star formation in a few million years.
Evidence is rapidly growing that the most powerful winds emanated from the SMBH accretion discs carry enough energy to trigger a galaxy-wide snowplough effect. In this wake, the different outflow manifestation we are witnessing can be regarded as consecutive snapshots of the same AGN feedback picture. It is therefore time for a systematic survey of AGN-driven winds, aimed at shedding light on the physical conditions underlying their launch, expansion, and interaction with the ambient gas. Prompted by some recent compelling results, this research project will take advantage of a multiwavelength perspective and of the best available and forthcoming facilities to move towards the unification of AGN outflows, with the ultimate goal of understanding how galaxies are shaped by the high energy physical processes that take place in their innermost regions.
Here I am: