The NAOJ Division of Science Cosmology Group

Journal Club (NAOJ-Cosmo)

国立天文台科学研究部宇宙論・文献紹介

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· XX/XX/2025 (Mon) 16:00 --, XXX

Toya Suzuki, “TBA”

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· XX/XX/2025 (Mon) 16:00 --, XXX

Shubham Bhardwaj, “TBA”

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· XX/XX/2025 (Mon) 16:00 --, XXX

Kazunori Kohri, “TBA”

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· 3/24/2025 (Mon) 16:00 --, 313

Arnab Chaudhuri, “TBA”

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· 2/10/2024 (Mon) 16:00 --, 313

Takeshi Hamana, “TBA”

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· 1/27/2025 (Mon) 16:00 --, 313

Maria Dainotti, “TBA”

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· 1/20/2025 (Mon) 16:00 --, 313

Naonori Sugiyama, “TBA”

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· 12/16/2024 (Mon) 16:30 --1730, 313/Zoom (email to Maria Dainotti about the URL)

Xavier Jason Prochawska, “Recent Progress on Cosmological Constraints with Fast Radio Bursts"”

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· 11/25/2024 (Mon) 16:00 --, 313

Albert Escriva, “Non-spherical effects on the mass function of Primordial Black Holes / Simulations of Ellipsoidal Primordial Black Hole Formation”

Albert Escrivà, Chul-Moon Yoo, arXiv: 2410.03451 [gr-qc]

https://arxiv.org/abs/2410.03451

Albert Escrivà, Chul-Moon Yoo, arXiv:2410.03452 [gr-qc]

https://arxiv.org/abs/2410.03452

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· 11/11/2024 (Mon) 16:00 --, 313

Toya Suzuki, “Evolution of the DM distribution function in the density spikes
around PBHs”, arXiv: 2407.10225

https://arxiv.org/abs/2407.10225

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· 10/7/2024 (Mon) 17:00 --, Zoom

Shubham Bhardwaj, “Constraining burdened PBHs with

gravitational waves”, arXiv:2409.05953v2

https://arxiv.org/abs/2409.05953v2

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· 8/26/2024 (Mon) 16:00 --, Lecture Room

Chia-Min Lin (National Chin-Yi University of Technology, Taiwan),

Title: “Quantum cosmology and uniform rate inflation”

Abstract:

In this talk, I will be unveiling an analytical solution of the Wheeler-DeWitt equation in a flat FLRW minisuperspace, and discuss it in de Broglie-Bohm quantum cosmology. This solution is the foundation for an inflation model, the uniform rate inflation. I will also share this novel model's experimental predictions and generalizations in braneworld cosmology.

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· 7/22/2024 (Mon) 16:00 --, Lecture room

Arnab Chaudhuri, “Review of Memory Burden Effects”

1) Valentin Thoss, Andreas Burkert, Kazunori Kohri,

arXiv: 2402.17823

https://arxiv.org/abs/2402.17823

2) Basabendu Barman, Md Riajul Haque, Óscar Zapata, arXiv:2405.15858 [astro-ph.CO]

https://arxiv.org/abs/2405.15858

3) Gia Dvali, Lukas Eisemann, Marco Michel, Sebastian Zell, arXiv:2006.00011 [hep-th]

https://arxiv.org/abs/2006.00011

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· 7/8/2024 (Mon) 16:00 --, Lecture room

Naonori Sugiyama, “3Dx2D?”

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· 7/1/2024 (Mon) 16:00 --, Lecture room

Takeshi Kobayashi (SISSA, Italy), “Monopoles and Cosmic Magnetic Fields”

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· 6/24/2024 (Mon) 16:00 --

Maria Dainotti, “A new parametrization for w₀, w_a, CDM model to alleviate the Hubble constant tension?”

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· 5/24/2024 (Mon) 16:00 --

Takashi Hamana, “Hubble Tension”

1) A new method to determine H0 from cosmological energy-density measurements

Alex Krolewski, Will J. Percival, Alex Woodfinden

https://arxiv.org/abs/2403.19227

2) Measuring the baryon fraction using galaxy clustering,

Alex Krolewski, Will J. Percival

https://arxiv.org/abs/2403.19236

3) A too-many dwarf galaxy satellites problem in the M83 group,

Oliver Müller, Marcel S. Pawlowski, Yves Revaz, Aku Venhola, Marina Rejkuba, Michael Hilker, Katharina Lutz

https://arxiv.org/abs/2403.08717

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· 5/13/2024 (Mon) 15:00 --

Kazunori Kohri, DESI year 1 in terms of time-dependent dark energy and neutrino mass hierarchy

1) DESI Collaboration: A. G. Adame et al, arXiv:2404.03002 [astro-ph.CO]

https://arxiv.org/abs/2404.03002

2) https://data.desi.lbl.gov/public/papers/y1/DESI2024_VI_BAO_COSMOLOGY.pdf

3) Yuichiro Tada and Takahiro Terada, arXiv:2404.05722v2

https://arxiv.org/abs/2404.05722

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· 4/1/2024 (Mon) 15:00 --

Naonori Sugiyama, Video Files for presentation

1) Naonori S. Sugiyama, Daisuke Yamauchi, Tsutomu Kobayashi, Tomohiro Fujita, Shun Arai, Shin'ichi Hirano, Shun Saito, Florian Beutler, Hee-Jong Seo, arXiv:2305.01142 [astro-ph.CO]

https://arxiv.org/abs/2305.01142

YouTube

https://www.youtube.com/watch?v=Zi36ooLPhss&feature=youtu.be

2) Naonori S. Sugiyama,

https://arxiv.org/abs/2402.06142

YouTube

https://www.youtube.com/watch?v=u1-xx3_4xCg

3) Naonori S. Sugiyama,

https://arxiv.org/abs/2403.18262

YouTube

https://www.youtube.com/watch?v=bHdlIi3jQ4A&feature=youtu.be

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· 2/26/2024 (Mon) 13:00 --

Takashi Hamana, The SRG/eROSITA and cosmological tension of σ₈

1) https://arxiv.org/abs/2402.08458

2) A&A, vol. 682, A34 (2024), https://arxiv.org/abs/2401.17274

3) https://arxiv.org/abs/2402.08452

4) https://arxiv.org/abs/2402.08453

5) https://arxiv.org/abs/2402.08455

6) https://arxiv.org/abs/2402.08456

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· 1/29/2024 (Mon) 16:00 --

Kazunori Kohri

Parity violation in the Universe

1) Could Sample Variance be Responsible for the Parity-Violating Signal Seen in the BOSS Galaxy Survey?, Oliver H. E. Philcox, Julia Ereza, arXiv:2401.09523 [astro-ph.CO] https://arxiv.org/abs/2401.09523

2) Probing Parity-Violation with the Four-Point Correlation Function of BOSS Galaxies, Oliver H. E. Philcox, arXiv:2206.04227 [astro-ph.CO] https://arxiv.org/abs/2206.04227

3) Planck constraints on Cosmic Birefringence and its cross-correlation with the CMB, G. Zagatti, M. Bortolami, A. Gruppuso, P. Natoli, L. Pagano, G. Fabbian, rXiv:2401.11973 [astro-ph.CO]rXiv:2401.11973 [astro-ph.CO] https://arxiv.org/abs/2401.11973

4) Deuterium D/H Measurement in the metal-poor sub-DLA system at 𝑧 = 3.42 towards quasar J 1332+0052, P.A. Kislitsyn, S.A. Balashev, M.T. Murphy, C. Ledoux, P. Noterdaeme, A.V. Ivanchik, arXiv:2401.12797 [astro-ph.CO] https://arxiv.org/abs/2401.12797

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· 11/28/2023 (Fri) 15:00--

Naonori S. Sugiyama

1) First test of the consistency relation for the large-scale structure using the anisotropic three-point correlation function of BOSS DR12 galaxies

(An explanatory video is available at https://youtu.be/Zi36ooLPhss.)

2) Naonori S. Sugiyama, Daisuke Yamauchi, Tsutomu Kobayashi, Tomohiro Fujita, Shun Arai, Shin'ichi Hirano, Shun Saito, Florian Beutler, Hee-Jong

Seo https://arxiv.org/abs/2305.01142

3) Sugiyama, Shiraishi, Okumura https://arxiv.org/abs/1704.02868

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· 10/30/2023 (Mon) 15:00 --

Takashi Hamana

1) Enrique Paillas, et al, arxiv:2309.16541

https://arxiv.org/abs/2309.16541

2) Chi-Ting Chiang, Christian Wagner, Fabian Schmidt, Eiichiro Komatsu, 2014, JCAP, 05, 048

https://arxiv.org/abs/1403.3411

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· 10/23/2023 (Mon) 15:00 --

Kazunori Kohri

JWST and the early-universe cosmology

1) JWST‘s UV luminosity function is consistent with ΛCDM, Yi-Ying Wang, Lei Lei, Guan-Wen Yuan, Yi-Zhong Fan, arXiv:2307.12487 [astro-ph.GA], https://arxiv.org/abs/2307.12487

2) An inflation model for massive primordial black holes to interpret the JWST observations”, Bing-Yu Su, Nan Li, Lei Feng, arXiv:2306.05364 [astro-ph.CO] https://arxiv.org/abs/2306.05364

3) NANOGrav15yr, JWST’s early star formation and Hubble tension, Yann Gouttenoire, Sokratis Trifinopoulos, Georgios Valogiannis, Miguel Vanvlasselaer, arXiv:2307.01457 [astro-ph.CO] https://arxiv.org/abs/2307.01457

4) Primordial power spectrum in light of JWST observations of high redshift galaxies, Priyank Parashari, Ranjan Laha, arXiv:2305.00999 [astro-ph.CO]https://arxiv.org/abs/2305.00999

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問い合わせ先: 郡　和範 (こおり　かずのり)

Contact: Kazunori Kohri

https://sci.nao.ac.jp/main/member