Here we discuss the impact of quasars (QSOs) on the ionization and heating of host and field galaxies and on the intergalactic medium (IGM), by showing the results of radiative transfer simulations accounting for Xrays and secondary electrons. By adopting a multiscale approach (100 h1 / 25 h1 / 1 h1 cMpc boxes) we study the importance of feedback in different environments and the impact on observables present at different scales. The role of QSO in the general context of a full reionization simulation [12] and their relative contribution in the evolution of the first Gyr of our Universe is addressed in the first box. The second box considers a single QSO HII region in a case matching a ULAS J1120+0641like QSO. Implications for the HII region properties are also discussed [3]. Finally, new small scale simulations accounting for Xrays triggered photodissociation regions and metal ions are introduced in the last box [567].
X-rays ionization and heating by high redshift quasars / Graziani, Luca; Ciardi, Benedetta; Glatzle, Martin. - (2018). (Intervento presentato al convegno Massive black holes in evolving galaxies: from quasars to quiescence tenutosi a Paris, France).
X-rays ionization and heating by high redshift quasars
LUCA GRAZIANI
Primo
Writing – Original Draft Preparation
;
2018
Abstract
Here we discuss the impact of quasars (QSOs) on the ionization and heating of host and field galaxies and on the intergalactic medium (IGM), by showing the results of radiative transfer simulations accounting for Xrays and secondary electrons. By adopting a multiscale approach (100 h1 / 25 h1 / 1 h1 cMpc boxes) we study the importance of feedback in different environments and the impact on observables present at different scales. The role of QSO in the general context of a full reionization simulation [12] and their relative contribution in the evolution of the first Gyr of our Universe is addressed in the first box. The second box considers a single QSO HII region in a case matching a ULAS J1120+0641like QSO. Implications for the HII region properties are also discussed [3]. Finally, new small scale simulations accounting for Xrays triggered photodissociation regions and metal ions are introduced in the last box [567].I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
