BlackHoleWeather: Raining on Galaxies and Supermassive Black Holes

  • FIM-S3 Seminar
Speaker
Massimo Gaspari
Affiliation
Princeton University, USA
Date
2023-07-25
Time
16:30
Venue
S3 Seminar Room, 3rd floor, Physics Building ONLINE: https://tinyurl.com/AstrofisicaFIM
Host
Marco Gibertini
Abstract:
Feeding and feedback tied to supermassive black holes (SMBHs) play central role in the cosmic evolution of galaxies, groups, and clusters of galaxies. The self-regulated active galactic nucleus (AGN) cycle is matter of intense debate. I review key results of our theoretical and observational campaign (BlackHoleWeather) which aims to unveil how SMBHs are tightly coupled to the multiphase gaseous halos, linking the inner gravitational radius to the cosmological scales (Mpc) and vice versa. Massively parallel hydrodynamical simulations show that the turbulent plasma (X-ray) halo radiatively cools via a top-down multiphase condensation rain of warm (optical/IR) filaments and molecular (radio) clouds. The multiphase precipitation inherits the hot halo kinematics and thermodynamics, thus establishing a “cosmic weather”. In the nuclear region, the recurrent collisions between the clouds and filaments promote angular momentum cancellation and boost the SMBH accretion rate via Chaotic Cold Accretion (CCA). The rapid CCA variability triggers powerful fast AGN outflows that quench the macro-scale cooling flow and star formation, while preserving the atmospheres of galaxies, groups, and clusters in quasi thermal equilibrium throughout cosmic time.

Istituto Nanoscienze 

Consiglio Nazionale delle Ricerche

 

PEC: protocollo.nano@pec.cnr.it

Partita IVA 02118311006

Facebook-f Instagram Twitter Linkedin
Pisa NEST

Piazza San Silvestro 12

56127 Pisa, Italy

phone +39 050 509418

fax +39 050 509550

segreteria.nest@nano.cnr.it

Modena S3
via Campi 213/A
41125 Modena, Italy
phone +39 059 2055629
fax +39 059 2055651
segreteria.s3@nano.cnr.it

Istituto Nanoscienze Consiglio Nazionale delle Ricerche

Facebook-f Instagram Twitter Linkedin
Pisa NEST

Piazza San Silvestro 12, I
56127 Pisa

phone +39 050 509525/418

fax +39 050 509550

Modena S3

via Campi 213/A, I 

41125 Modena 7

phone +39 059 2055629

fax +39 059 2055651″