[Astronomy seminar] Astronomy departmental seminar Friday February 2 at 10:30am - Mahsa Sanati (Chalmers)

[Astronomy seminar announcements]

Dear all,


The next SU astronomy departmental seminar (first of 2024) will take place on Friday February 2 at 10:30am in room FC61 (AlbaNova building, 6th floor) and on zoom (**NEW ZOOM MEETING** https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09).

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Speaker: Mahsa Sanati (Chalmers)

Title: From first stars to supermassive blackholes

Event: https://indico.fysik.su.se/e/mahsa_sanati


Abstract:

Evidence supporting the existence of supermassive black holes (SMBHs), which host extremely bright quasars at high redshifts, imposes constraints on the formation and growth of their initial seeds. Recent JWST observations reveal the presence of such SMBHs at even earlier epochs, providing only a few hundred million years for the black hole seeds to accrete gas and grow. The choice of a Eddington limited accretion is a common practice in modelling the growth of SMBH seeds, however, there are numerous uncertainties regarding their accretion during initial stages. We propose a model for the formation of SMBHs from the remnants of a specific class of first stars known as Population III.1 stars, forming within isolated dark matter mini-halos in the early Universe. In this model, SMBHs undergo growth through mergers and gas accretion, with their growth being regulated by AGN feedback. The talk aims to explore the growth and activity of SMBHs forming from Pop III.1 stars in cosmological simulations and the traces of this scenario in the epoch of reionization.

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We look forward to seeing many of you there. Thanks!


Adur, Adélaïde, and Sanja


Upcoming Events:


2024-02-09 Andrius Popovas

2024-02-16 Daniel Siegel

2024-02-21 Johan Richard (**Seminar on WEDNESDAY**)

2024-03-01 ** No seminar **

2024-03-08 TBA

2024-03-15 Joe Lewis

2024-03-22 Khaled Al Moulla

2024-03-29 ** No seminar **


You can subscribe to the seminars calendar in: https://ttt.astro.su.se/ical/astro-seminars.ics

(Please note that calendar can be subject to updates)

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Join Zoom Meeting:

https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09

Meeting ID: 622 1126 9644; Password : 593083

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