The 4th Toyama International Symposium on "Physics at the Cosmic Frontier" (PCF2022-2023)
from
Friday, September 30, 2022 (5:00 PM)
to
Friday, March 31, 2023 (6:00 PM)
Monday, September 26, 2022
Tuesday, September 27, 2022
Wednesday, September 28, 2022
Thursday, September 29, 2022
Friday, September 30, 2022
Saturday, October 1, 2022
Sunday, October 2, 2022
Monday, October 3, 2022
Tuesday, October 4, 2022
Wednesday, October 5, 2022
1:00 PM
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
)
1:00 PM - 3:30 AM
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, October 6, 2022
Friday, October 7, 2022
Saturday, October 8, 2022
Sunday, October 9, 2022
Monday, October 10, 2022
Tuesday, October 11, 2022
Wednesday, October 12, 2022
Thursday, October 13, 2022
Friday, October 14, 2022
Saturday, October 15, 2022
Sunday, October 16, 2022
Monday, October 17, 2022
Tuesday, October 18, 2022
Wednesday, October 19, 2022
Thursday, October 20, 2022
Friday, October 21, 2022
Saturday, October 22, 2022
Sunday, October 23, 2022
Monday, October 24, 2022
Tuesday, October 25, 2022
Wednesday, October 26, 2022
Thursday, October 27, 2022
Friday, October 28, 2022
Saturday, October 29, 2022
Sunday, October 30, 2022
Monday, October 31, 2022
2:45 PM
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
2:45 PM - 3:45 PM
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, November 1, 2022
Wednesday, November 2, 2022
Thursday, November 3, 2022
Friday, November 4, 2022
Saturday, November 5, 2022
Sunday, November 6, 2022
Monday, November 7, 2022
Tuesday, November 8, 2022
Wednesday, November 9, 2022
Thursday, November 10, 2022
Friday, November 11, 2022
Saturday, November 12, 2022
Sunday, November 13, 2022
Monday, November 14, 2022
Tuesday, November 15, 2022
Wednesday, November 16, 2022
Thursday, November 17, 2022
Friday, November 18, 2022
Saturday, November 19, 2022
Sunday, November 20, 2022
Monday, November 21, 2022
Tuesday, November 22, 2022
Wednesday, November 23, 2022
Thursday, November 24, 2022
Friday, November 25, 2022
Saturday, November 26, 2022
Sunday, November 27, 2022
Monday, November 28, 2022
Tuesday, November 29, 2022
Wednesday, November 30, 2022
Thursday, December 1, 2022
Friday, December 2, 2022
Saturday, December 3, 2022
Sunday, December 4, 2022
Monday, December 5, 2022
Tuesday, December 6, 2022
Wednesday, December 7, 2022
Thursday, December 8, 2022
Friday, December 9, 2022
Saturday, December 10, 2022
Sunday, December 11, 2022
Monday, December 12, 2022
Tuesday, December 13, 2022
Wednesday, December 14, 2022
Thursday, December 15, 2022
Friday, December 16, 2022
Saturday, December 17, 2022
Sunday, December 18, 2022
Monday, December 19, 2022
Tuesday, December 20, 2022
Wednesday, December 21, 2022
Thursday, December 22, 2022
Friday, December 23, 2022
Saturday, December 24, 2022
Sunday, December 25, 2022
Monday, December 26, 2022
Tuesday, December 27, 2022
Wednesday, December 28, 2022
Thursday, December 29, 2022
Friday, December 30, 2022
Saturday, December 31, 2022
Sunday, January 1, 2023
Monday, January 2, 2023
Tuesday, January 3, 2023
Wednesday, January 4, 2023
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Friday, January 6, 2023
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Wednesday, January 25, 2023
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Friday, January 27, 2023
Saturday, January 28, 2023
Sunday, January 29, 2023
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Tuesday, January 31, 2023
Wednesday, February 1, 2023
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Friday, February 3, 2023
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Tuesday, February 7, 2023
Wednesday, February 8, 2023
Thursday, February 9, 2023
Friday, February 10, 2023
Saturday, February 11, 2023
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Tuesday, February 14, 2023
Wednesday, February 15, 2023
Thursday, February 16, 2023
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Wednesday, March 1, 2023
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Tuesday, March 21, 2023
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Thursday, March 23, 2023
Friday, March 24, 2023
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Sunday, March 26, 2023
Monday, March 27, 2023
Tuesday, March 28, 2023
Wednesday, March 29, 2023
Thursday, March 30, 2023
Friday, March 31, 2023