[Okc-wp4] EO meeting 23/06

[Francesco Taddia]

Do not forget our EO meeting today!
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Francesco Taddia
Postdoctoral Researcher
Department of Astronomy
Stockholm University, Sweden
ftadd at astro.su.se <mailto:ftadd at astro.su.se>







> On 20 Jun 2016, at 11:04, Francesco Taddia <ftadd at astro.su.se> wrote:
> 
> Dear all,
> 
> This Thursday (23/06), Marek Abramowicz will give the following talk at our EO meeting (13:00-14:00):
> 
> Title: "Hyper-Eddington accretion and ULXs"
> 
> Summary: The ultra-luminous X-ray sources are still a puzzle. There
> are purely observational proofs that at least a few of them are accreting neutron stars, or stellar mass
> black holes. However, one cannot say that all ULXs are connected with compact objects with mases
> not in excess of 100 solar masses. The intermediate mass black holes may still be needed. There is
> no convincing theoretical model explaining how an acceting system may collimate radiation to
> highly hyper-Eddington luminosities. I will discuss mostly my most recent papers (with Lasota,
> Narayan and Sądowski) devoted to these unsolved issues. They are based on up-to-date advanced
> numerical GRRMHD simulations (GRR = General Relativistic and Radiative) by Sądowski.
> 
> cheers
> 
> /Francesco
> -------------------------------------------
> Francesco Taddia
> Postdoctoral Researcher
> Department of Astronomy
> Stockholm University, Sweden
> ftadd at astro.su.se <mailto:ftadd at astro.su.se>
> 
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