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CANCELADO Seminario DAS: "The furthest Quasars in the X-rays"


Jueves 02 de Abril de 2020


12:15 hrs.


Sala de Conferencias Federico Ristenpart (Camino El Observatorio 1515, Departamento de Astronomía, Edificio Central, piso 3, Las Condes, Santiago, Chile)

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The furthest Quasars in the X rays

The furthest Quasars in the X-rays

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Departamento de Astronomía

Speaker: Fabio Vito

Title: The furthest Quasars in the X-rays

Abstract: Studying quasars (QSOs) at high-redshift provides key constraints to our knowledge of how Supermassive Black Holes (SMBHs) formed and evolved in the early Universe. X-ray observations, being less affected by obscuration and host-galaxy contamination than optical/IR bands, and probing the accretion physics on the smallest scales, are excellent tools for this task. I will present recent X-ray observations of a sample of z>6 optically selected QSOs, with the goal of studying their accretion physics, and compare the results with the QSO population at lower redshift. I will also talk about the population of obscured QSOs at high redshift, which are missed by current selection techniques. Finally, I will discuss how future X-ray observatories (Athena, Lynx, AXIS) will allow us to extend the study of accreting SMBHs to higher redshifts and lower luminosities than those probed today.

Rene A. Mendez
Seminar Coordinator
DAS/UChile - rmendez@uchile.cl

Departamento de Astronomía, Cerro Calán
Alejandro Leal Obreque - +562 29771154 -

Departamento de Astronomía