H2020Индивидуална стипендия2018–2019

CACHEM · Probing Clustering of X-ray AGN using Chandra and Semi-Empirical Models

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2018-01-01 → 2019-12-31
Финансиране от ЕС: 168 277 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Разпределението на активните галактични ядра и връзката им с тъмната материя се анализират чрез рентгенови данни. Това помага да се разбере как растежът на свръхмасивните черни дупки влияе върху еволюцията на галактиките и структурата на Вселената.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

CACHEM: Probing Clustering of X-ray AGN using Chandra and Semi-Empirical Models

Almost every galaxy in the Universe hosts a super massive black hole (BH) at its center. During active phases, when the BH growth is powered by matter accretion, the galaxy is observed as an Active Galactic Nucleus (AGN). How BH growth and AGN formation are related to the host galaxy evolution, and to the cosmic large-scale structure are among the most outstanding problems in Cosmology. These questions also hold the key for a full understanding of galaxy formation. AGN clustering provides a unique way to probe the link between BHs and host galaxies through their connection with host dark matter halos. Clustering describes the distribution of AGN pairs as a function of their spatial separation, provides an indirect measurement of hosting dark matter halo masses, and quantifies how BH populate halos. Such information is a cogent benchmark for BH triggering scenarios, and AGN evolutionary models. The aim of this project is to clarify the interplay among BHs, host galaxies and dark matter halos by (i) performing clustering measurements of X-ray selected AGN as a function of spatial scale, obscuration and host galaxy properties; (ii) creating AGN mock catalogs based on Semi Empirical Models which serve to (iii) interpret the clustering of AGN selected via X-ray and multi-wavelength current/future surveys.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The presence of a supermassive black hole (BH) in almost all galaxies in the Universe is an accepted paradigm in astronomy. How these BHs form and how they co-evolve with the host galaxy is one of the most intriguingunanswered problems in modern Cosmology and of extreme relevance to understand the issue of galaxy formation.Clustering measurements can powerfully test theoretical model predictions of BH triggering scenarios and put constraints on the typical environment where AGN live in, through the connection with their host dark matter halos.This project wants to probe the clustering properties of X-ray AGN from both an observational and theoretical point of view, using the new catalog of AGN detected by Chandra in COSMOS and semiempirical models.The Chandra COSMOS-Legacy (CCL) catalog is the largest available sample of X-ray AGN for clustering studies, allowing clustering measurements as a function of obscuration, luminosity and AGN host galaxy properties for the first time up to z~3-4 and with the accuracy needed to model the AGN halo occupation.We also propose to generate mock catalogs of galaxies and BHs assigned via semi-empirical relations to large samples of dark matter halos. Via detailed comparisons of the predictions from the mocks with the AGN clustering at different scales, redshifts and obscuration cuts, we will set unique constraints on the BH/galaxy properties driving the clustering measurements of CCL AGN, especially of obscured sources. This in turn is crucial to understand the AGN/galaxy co-evolution and to test different BH triggering scenarios at different epochs.SNS will constitute for the Applicant an invaluable and unique environment at the European level, where she will achieve extreme competence in both theory and observations. Her profile will become extremely relevant with the advent of large dedicated extra-galactic European missions such as EUCLID, eRosita, Athena.

Оригинален текст от CORDIS (на английски).

Участници

SCUOLA NORMALE SUPERIORE · PisaКоординаторИталия