[Physics-grads-open] Physics & Astronomy Student Seminar (PASS), June 29 (Wed) at 4 pm, Phys 3027

[Ming-Feng Ho]

Happening in 10 mins!

On Mon, Jun 27, 2022 at 2:24 PM Ming-Feng Ho <mingfeng.ho at email.ucr.edu>
wrote:

> Hi all,
>
> Mahdi (4th year PhD student in Simeon Bird's group) will give a talk on
> Lya tomography this Wednesday. This is a project done jointly with
> Carnegie-Observatory in Pasadena through a UCR fellowship. Please come and
> ask questions if you're interested!
>
> In the subsequent weeks, we will have Reza Monadi (Bird's group), and Liz
> Finney (John Barton's group) give talks.
>
> Please check our program here: [Program
> <https://jibancat.github.io/ucr-student-seminars/program/index.html>]
>
>
> *Title: Applications of 3D Ly-α tomography*
>
> Mahdi Qezlou (University of California, Riverside)
>
> *Abstract: *Ly-α tomography surveys have begun to produce
> three-dimensional (3D) maps of the intergalactic medium (IGM) opacity at
> z∼2.5 with Mpc resolution. These surveys provide an exciting new window to
> discover and characterize high-redshift overdensities, including the
> progenitors of today's massive groups and clusters of galaxies, known as
> protogroups and protoclusters. In this talk, I will introduce our novel
> method for delineating the boundaries of structures detected in 3D Ly-α
> flux maps by applying classical image segmentation techniques. Moreover, I
> will argue how the Ly-α tomography is complementary to the conventional
> galaxy surveys by discussing an interesting population of observed
> protoclusters, in Lyman-α Tomographic IMACS Survey (LATIS), which contain
> surprisingly fewer UV-bright galaxies compared with the dark matter halos
> in mock-observed simulations. Finally, I will discuss other potential
> applications of these tomography surveys, such as the synergies with line
> intensity map (LIM) experiments.
>
> Wednesday, June 29, 2022 at 4 pm
> Physics 3027 (Nebula Room)
>
> To submit abstracts for Summer Quarter: [Abstract Submission
> <https://jibancat.github.io/ucr-student-seminars/registration/index.html>
> ].
>
> PS, Mahdi will be the host for the PASS talks after 7/6 because I will be
> out of town.
>
> Hope to see you there!
> Ming-Feng Ho
>
>
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