Name: The 4th Toyama International Symposium on "Physics at the Cosmic Frontier" (PCF2022-2023)
Start: 2022-09-30T17:00:00+09:00
End: 2023-03-31T18:00:00+09:00
Location: Faculty of Science, University of Toyama

Monday 26 September 2022
Tuesday 27 September 2022
Wednesday 28 September 2022
Thursday 29 September 2022
Friday 30 September 2022
Saturday 1 October 2022
Sunday 2 October 2022

Monday 3 October 2022
Tuesday 4 October 2022
Wednesday 5 October 2022
13:00 seminar 1: "First Identification of a CMB Lensing Signal Produced by 1.5 Million Galaxies at z∼4" - Yuichi Harikane (ICRR)
seminar 1: "First Identification of a CMB Lensing Signal Produced by 1.5 Million Galaxies at z∼4"
- Yuichi Harikane (ICRR)
13:00 - 03:30
Room: A425 We report the first detection of the dark matter distribution around Lyman break galaxies (LBGs) at the redshift of z~4 through the cosmic microwave background (CMB) lensing measurements with the public Planck PR3 κ map. The LBG sample consists of 1473106 objects at z∼4 that are identified in a total area of 305 deg2 observed by the Subaru/Hyper Suprime-Cam survey. After careful investigations of systematic uncertainties, such as contamination from foreground galaxies and cosmic infrared background, we obtain the significant detection of the CMB lensing signal at 5.1sigma which is dominated by 2-halo term signals of the LBGs. Fitting a simple model consisting of the Navarro-Frenk-White profile and the linear-bias model, we obtain the typical halo mass of Mh=2.9×1011 h−1 Msun. Combining the CMB lensing and galaxy-galaxy clustering signals on the large scales, we demonstrate the first cosmological analysis at z∼4 that constrains (Omega_m0,sigma_8). We find that our constraint on sigma_8 is roughly consistent with the Planck cosmology, while this sigma_8 constraint is lower than the Planck cosmology over the 1sigma level. This study opens up a new window for constraining cosmological parameters at high redshift by the combination of CMB and high-z galaxies, as well as studying the interplay between galaxy evolution and large-scale structure at such high redshift. In this seminar, we will also discuss the future prospects with ongoing/upcoming observations by large ground-based/space telescopes such as James Webb Space Telescope (JWST).
Thursday 6 October 2022
Friday 7 October 2022
Saturday 8 October 2022
Sunday 9 October 2022

Monday 10 October 2022
Tuesday 11 October 2022
Wednesday 12 October 2022
Thursday 13 October 2022
Friday 14 October 2022
Saturday 15 October 2022
Sunday 16 October 2022

Monday 17 October 2022
Tuesday 18 October 2022
Wednesday 19 October 2022
Thursday 20 October 2022
Friday 21 October 2022
Saturday 22 October 2022
Sunday 23 October 2022

Monday 24 October 2022
Tuesday 25 October 2022
Wednesday 26 October 2022
Thursday 27 October 2022
Friday 28 October 2022
Saturday 29 October 2022
Sunday 30 October 2022

Monday 31 October 2022
14:45 Seminar 2: "Searches for Dark Matter with Cherenkov telescopes: Latest results and a glimpse into the future" - Moritz Hütten
Seminar 2: "Searches for Dark Matter with Cherenkov telescopes: Latest results and a glimpse into the future"
- Moritz Hütten
14:45 - 15:45
The quest for Dark Matter is a since long unsolved puzzle of modern physics. Imaging Atmospheric Cherenkov telescopes, like MAGIC located at Roque de los Muchachos Observatory on La Palma, have so far searched almost 1000 hours of their data for gamma-ray signals from annihilating or decaying heavy (>GeV) Dark Matter particles. Also, the next-generation Cherenkov Telescope Array (CTA) is under construction, promising a moment of truth for TeV Dark Matter in the near future. In this seminar, I will introduce how to search for Dark Matter with Cherenkov telescopes. I will present the latest Dark Matter constraints obtained with the MAGIC telescopes, as well as what we can expect to learn with CTA.
Tuesday 1 November 2022
Wednesday 2 November 2022
Thursday 3 November 2022
Friday 4 November 2022
Saturday 5 November 2022
Sunday 6 November 2022

Monday 7 November 2022
Tuesday 8 November 2022
Wednesday 9 November 2022
Thursday 10 November 2022
Friday 11 November 2022
Saturday 12 November 2022
Sunday 13 November 2022

Monday 14 November 2022
Tuesday 15 November 2022
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Saturday 19 November 2022
Sunday 20 November 2022

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Wednesday 23 November 2022
Thursday 24 November 2022
Friday 25 November 2022
Saturday 26 November 2022
Sunday 27 November 2022

Monday 28 November 2022
Tuesday 29 November 2022
Wednesday 30 November 2022
Thursday 1 December 2022
Friday 2 December 2022
Saturday 3 December 2022
Sunday 4 December 2022

Monday 5 December 2022
Tuesday 6 December 2022
Wednesday 7 December 2022
Thursday 8 December 2022
Friday 9 December 2022
Saturday 10 December 2022
Sunday 11 December 2022

Monday 12 December 2022
Tuesday 13 December 2022
Wednesday 14 December 2022
Thursday 15 December 2022
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Monday 19 December 2022
Tuesday 20 December 2022
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Monday 26 December 2022
Tuesday 27 December 2022
Wednesday 28 December 2022
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Friday 30 December 2022
Saturday 31 December 2022
Sunday 1 January 2023

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Wednesday 1 February 2023
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Monday 27 February 2023
Tuesday 28 February 2023
Wednesday 1 March 2023
Thursday 2 March 2023
Friday 3 March 2023
Saturday 4 March 2023
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Monday 6 March 2023
Tuesday 7 March 2023
Wednesday 8 March 2023
Thursday 9 March 2023
Friday 10 March 2023
Saturday 11 March 2023
Sunday 12 March 2023

Monday 13 March 2023
Tuesday 14 March 2023
Wednesday 15 March 2023
Thursday 16 March 2023
Friday 17 March 2023
Saturday 18 March 2023
Sunday 19 March 2023

Monday 20 March 2023
Tuesday 21 March 2023
Wednesday 22 March 2023
Thursday 23 March 2023
Friday 24 March 2023
Saturday 25 March 2023
Sunday 26 March 2023

Monday 27 March 2023
Tuesday 28 March 2023
Wednesday 29 March 2023
Thursday 30 March 2023
Friday 31 March 2023

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