You can check the list of my publications from ADS or Google Scholar.

• First/corresponding  author 

1.  K. Hayashi, Y. Kaneda, M. Mori, M. Shinozaki, "Cusp-to-Core Transition of Dark Matter Halos across Galaxy Mass Scales”, submitted to PASJ, 2025 (arXiv:2507.22155)

2. S. Ando, K. Hayashi, S. Horigome, M. Ibe, S. Shirai, "Stringent Constraints on Self-Interacting Dark Matter Using Milky-Way Satellite Galaxies Kinematics”, submitted to PRL, 2025 (arXiv:2503.13650)

3. K. Hayashi, Y. Hirai, M. Chiba, and T. Ishiyama, “Dark matter halo properties of the Galactic dwarf satellites: implication for chemo-dynamical evolution of the satellites and a challenge to Lambda CDM”,  Accepted  for publication in  The Astrophysical Journal, 2023 (arXiv:2206.02821)

4. K. Hayashi, E. G. M. Ferreira, and H. Y. J. Chan, “Narrowing the mass range  of Fuzzy Dark Matter with Ultra-faint Dwarfs”,   The Astrophysical Journal Letters, 912, pp. 3-8, 2021 (arXiv:2102.05300) 

5. K. Hayashi, M.  Ibe, S. Kobayashi, Y. Nakayama, and S. Shirai, “Probing Dark Matter Self-Interaction with Ultra-faint Dwarf Galaxies”,   Physical Review D, 103, 023017  (arXiv: 2008.02529) : Press Release (JP/EN)

6. K. Hayashi, M. Chiba, and T. Ishiyama, “Diversity of dark matter density profiles in the Galactic dwarf spheroidal satellites”, The Astrophysical Journal, 904, pp. 45-63, 2020 (arXiv:2007.13780) 

7. K. Hayashi and I. Obata, “Non-sphericity of ultra-light axion dark matter halos in the Galactic dwarf spheroidal galaxies”, Monthly Notices of the Royal Astronomical Society, 491, Issue 1, p.615-633 (arXiv:1902.03054) 

8. K. Hayashi and S. Inoue, “Effects of mass models on dynamical mass estimate: the case of ultra diffuse galaxy NGC1052-DF2”, Monthly Notices of the Royal Astronomical Society Letters, 481, pp. 59-63, 2018 (arXiv:1808.10116) 

9. K. Hayashi, M. Fabrizio, E. L. Lokas, G. Bono, M. Moneli, M. Dall'Ora and P. B. Stetson, “Dark halo structure in the Carina dwarf spheroidal galaxy: joint analysis of multiple stellar components”,  Monthly Notices of the Royal Astronomical Society, 481, pp. 250-261, 2018 (arXiv:1804.01739) 

10. K. Hayashi, T. Ishiyama, G. Ogiya, M. Chiba, S. Inoue and M. Mori, “Universal dark halo scaling relation for the dwarf spheroidal satellites”,  The Astrophysical Journal, 843, pp. 97-109, 2017 (arXiv:1703.02604) 

11. K. Hayashi, K. Ichikawa, S. Matsumoto, M. Ibe, M. N. Ishigaki and H. Sugai, “Dark matter annihilation and decay from non-spherical dark halos in galactic dwarf satellites”, Monthly Notices of the Royal Astronomical Society, 461, pp. 2914-2928, 2016 (arXiv:1603.08046) 

12. K. Hayashi and M. Chiba, “Structural properties of dark halos in the Milky Way and Andromeda dwarf spheroidal galaxies”, The Astrophysical Journal, 810, pp. 22-38, 2015 (arXiv:1507.07620) 

13. K. Hayashi and M. Chiba, “A common surface density of dark halo in the dwarf spheroidal galaxies as a constraint on dark matter models”, The Astrophysical Journal Letters, 803, pp. 11-15, 2015 (arXiv:1503.05279) 

14. K. Hayashi and M. Chiba, “The prolate dark matter halo of Andromeda galaxy”, The Astrophysical Journal, 789, pp. 62-71, 2014 (arXiv:1405.4606)

15. K. Hayashi and M. Chiba, “Probing Non-spherical dark halos in the Galactic dwarf galaxies”, The Astrophysical Journal, 755, pp. 145-157, 2012 (arXiv:1206.3888) 

• Co-author 

1. I. Ogami, Y. Komiyama,  (incl. K. Hayashi) et al., "Triangulum IV: A Possible Ultra-Diffuse Satellite of M33", Submitted to ApJL (arXiv:2407.07481)

2. T. Fukushima, M. Chiba, M. Tanaka, K. Hayashi, D. Homma, S. Okamoto, Y. Komiyama, M. Tanaka, N. Arimoto, and T. Matsuno, “The stellar halo of the Milky Way traced by blue horizontal-branch stars in the Subaru Hyper Suprime-Cam Survey”, submitted to PASJ (arXiv:2406.11923)

3. Y. Hirai, E. N. Kirby,  M. Chiba, K. Hayashi, et al., "Chemo-dynamical Evolution of Simulated Satellites for a Milky Way-like Galaxy, Submitted to ApJ (arXiv:2405.05330)

4. M. D. Wardana, M. Chiba and  K. Hayashi, "Disentangling gamma-beta: the 4th-order velocity moments based on spherical Jeans analysis", Submitted to ApJ (arXiv:2404.12671)

5. I. Ogami, Y. Komiyama,  (incl. K. Hayashi) et al., "Detection of a Spatially Extended Stellar population in M33: A Shallow Stellar Halo?", Submitted to ApJ (arXiv:2403.14234)

6. I. Ogami, M. Tanaka,  (incl. K. Hayashi) et al., "The structure of the stellar halo of the Andromeda galaxy explored with the NB515 for Subaru/HSC. I.: New insights on the stellar halo up to 130 kpc", Submitted to ApJ (arXiv:2401.00668)

7. Y. Suzuki, M. Chiba, Y. Komiyama, K. Hayashi, et al., "The Milky Way Tomography with Subaru Hyper Suprime-Cam. I. Halo substructures", Accepted to PASJ (arXiv:2311.17378)

8. D. Homma, M. Chiba, (incl. K. Hayashi) et al., “Final Results of Search for Newe Milky Way Satellites in the Hyper Suprime-Cam Subaru Strategic Program Survey: Discovery of Two More Candidates”, Submitted to PASJ (arXiv:2311.05439)

9. W. Yin and K. Hayashi, “Indirect Detection of Decaying Dark Matter with High Angular Resolution: Case for axion search by IRCS at Subaru Telescope”, Accepted to ApJ (arXiv:2305.13415)

10. Y. Xu, M. Ouchi, Y. Isobe, (incl. K. Hayashi) et al., “EMPRESS. XII. Statistics on the Dynamics and Gas Mass Fraction of Extremely-Metal Poor Galaxies”, Accepted to ApJ (arXiv:2303.12467)

11. A. Matsumoto, M. Ouchi, K. Nakajima, (incl. K. Hayashi) et al., “EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-Poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension”, The Astrophysical Journal, Volume 941, Issue 2, id.167, 14 pp., 2022 (arXiv:2203.09617)

12. M. Nashimoto, M. Tanaka, M. Chiba, K. Hayashi, Y. Komiyama, and T. Okamoto, “The Missing Satellite Problem Outside of the Local Group. II. Statistical Properties of Satellites of Milky Way-like Galaxies”, The Astrophysical Journal, Volume 936, Issue 1, id.38, 15 pp., 2022 (arXiv:2206.04709): Press Release (JP/EN)

13. S. Horigome, K. Hayashi, and S. Ando,  “Cosmological prior for the J-factor estimation of dwarf spheroidal galaxies”, Submitted to PRD (arXiv:2207.10378)

14. Y. Isobe, M. Ouchi, T. Nakajima, (incl. K. Hayashi) et al., “EMPRESS. IX. Extremely Metal-Poor Galaxies are Very Gas-Rich Dispersion-Dominated  Systems: Will JWST Witness Gaseous Turbulent High-z Primordial Galaxies?”, Accepted to ApJ (arXiv:2206.04709)

15. H. Y. J. Chan, E. G. M. Ferreira, S. May, K. Hayashi, and M. Chiba, "The Diversity of Core Halo Structure in the Fuzzy Dark Matter Model", Monthly Notices of the Royal Astronomical Society, vol. 511, no. 1, pp. 943--952, 2022 (arXiv: 2110.11882)

16. T. Ebisu, T. Ishiyama and K. Hayashi, "Constraining Self-interacting Dark Matter with Dwarf Spheroidal Galaxies and High-resolution Cosmological N-body Simulations", Physical Review D, Volume 105, Issue 2, article id.023016, 2022 (arXiv:2107.05967)

17. F. Crawford and K. Hayashi, "An Arecibo 327 MHz Search for Radio Pulsars and Bursts in the Dwarf Irregular Galaxies Leo A and T" , 2021, Accepted for publication in  Research Notes of the AAS, (arXiv:2106.09134) 

18. P. Lu, V. Takhistov, G. B. Gelmini, K. Hayashi, Y. Inoue, and A. Kusenko, "Interstellar Gas Heating by Primordial Black Holes" ,  Journal of Cosmology and Astroparticle Physics, Volume 2022, Issue 03, id.017, 26 pp., 2022  (arXiv: 2105.06099)

19. P. Lu, V. Takhistov, G. B. Gelmini, K. Hayashi, Y. Inoue, and A. Kusenko, "Constraining Primordial Black Holes with Dwarf Galaxy Heating" ,  The Astrophysical Journal Letters, 908, pp. 23-28, 2021 (arXiv:2007.02213)

20. H. Wirth, K. Bekki, and K. Hayashi, "Formation of massive globular clusters with dark matter and its implication on dark matter annihilation", MNRAS Letters, Volume 496, Issue 1, pp.L70-L74 (arXiv:2005.07128)

21. Y. Isobe, M. Ouchi, T. Kojima, T. Shibuya, K. Hayashi, [+14 co-authors], “EMPRESS. III. Morphology, Stellar Population, and Dynamics of Extremely Metal Poor Galaxies (EMPGs): Are EMPGs Local Analogs of High-z Young Galaxies?”, The Astrophysical Journal, Volume 918, Issue 2, id.54, 14 pp., 2021~(arXiv:2004.11444)

22. G. Shchelkanova, K. Hayashi, B. Sergei, “N-body self-consistent stars-halo modelling of the Fornax dwarf galaxy”, The Astrophysical Journal, 909, Issue 2, pp147-162 (arXiv:2004.11215) 

23. S. Horigome, K. Hayashi, M. Ibe, M. N. Ishigaki, S. Matsumoto and H. Sugai, “J-factor estimation of Draco, Sculptor and Ursa Minor dwarf spheroidal galaxies with the member/foreground mixture model”, Monthly Notices of the Royal Astronomical Society, 499, pp. 3320-3337, 2020 (arXiv:2002.04866)

24. D. Hashimoto, O. Macuas, A J. Nishizawa, K. Hayashi, M. Takada, M. Shirasaki, S. Ando, “Constraining dark matter annihilation with HSC Low Surface Brightness Galaxies ”, Journal of Cosmology and Astroparticle Physics, Issue 01, article id. 059, 2020 (arXiv:1906.06701)

25. T. Fukushima, M. Chiba, M. Tanaka, K. Hayashi, D. Homma, S. Okamoto, Y. Komiyama, M. Tanaka, N. Arimoto and T. Matsuno, “The stellar halo of the Milky Way traced by blue horizontal-branch stars in the Subaru Hyper Suprime-Cam Survey”, Publications of the Astronomical Society of Japan, 71, 4, 2019 (arXiv:1904.04966): Press Release (JP/EN)

26. D. Homma [+15 co-authors including K. Hayashi], “Bootes IV: A New Milky Way Satellite Discovered in the Subaru Hyper Suprime-Cam Survey and Implications for the Missing Satellite Problem”, Publications of the Astronomical Society of Japan, 71, 94, 2019 (arXiv:1906.07332)

27. M. Tanaka, M. Chiba, K. Hayashi, Y. Komiyama, T. Okamoto, A. Cooper, S. Okamoto and L. Spitler, “The Missing Satellite Problem Outside of the Local Group: I -- Pilot Observation”, The Astrophysical Journal, 865, pp. 125-137, 2018 (arXiv:1808.03410) 

28. K. Ichikawa, S. Horigome, M. N. Ishigaki, S. Matsumoto, M. Ibe, H. Sugai and K. Hayashi, “Foreground effect on the J-factor estimation of  ultra-faint dwarf spheroidal galaxies”,  Monthly Notices of the Royal Astronomical Society, 479, pp. 64-74, 2018 (arXiv:1706.05481) 

29. Y. Komiyama, M. Chiba, M. Tanaka, M. Tanaka, T. Kirihara, Y. Miki, M. Mori, R H. Lupton, P. Guhathakurta, J S. Kalirai, K. Gilbert, E. Kirby, M G. Lee, I S. Jang, S. Sharma, and K. Hayashi, “Stellar stream and halo structure in the Andromeda galaxy from a Subaru/Hyper Suprime Cam survey”, The Astrophysical Journal, 853, pp. 29-58, 2018 (arXiv:1712.03654) 

30. D. Homma, M. Chiba, S. Okamoto, Y, Komiyama, M. Tanaka, M. Tanaka, M N. Ishigaki, K. Hayashi , N. Arimoto, J A. Garmilla, R H. Lupton, M A. Strauss, S. Miyazaki and S. Wang, “Searches for New Milky Way Satellites from the First Two Years of Data of the Subaru/Hyper Suprime-Cam Survey: Discovery of Cetus III”, Publications of the Astronomical Society of Japan, 70, S18, 2018 (arXiv:1704.05977) 

31. N. Klop, F. Zandanel, K. Hayashi and S. Ando, “The impact of axisymmetric mass models for dwarf spheroidal galaxies on indirect dark matter searches in gamma-rays”, Physical Review D, 95, 123012 (arXiv:1609.03509) 

32. K. Ichikawa, M. N. Ishigaki, S. Matsumoto, M. Ibe, H. Sugai, K. Hayashi and S. Horigome, “Foreground effect on the J-factor estimation of classical dwarf spheroidal galaxies”, Monthly Notices of the Royal Astronomical Society, 468, pp.2884-2896, 2017 (arXiv:1608.01749) 

• Collaboration

1. Project CTA-LST: K. Abe, S. Abe, (incl. K. Hayashi) et al. "A detailed study of the very-high-energy Crab pulsar emission with the LST-1", accepted by A&A (arXiv:2407.02343)

2. S. Abe, J. Abhir, (incl. K. Hayashi) et al., "Dark Matter Line Searches with the Cherenkov Telescope Array", Submitted to JCAP (arXiv:2403.04857)

3. H. Abe, S. Abe,  (incl. K. Hayashi) et al., "Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data", Accepted to A&A (arXiv: 2310.01954)

4. S. Abe, A. Aguasca-Cabot, I. Agudo,  (incl. K. Hayashi) et al., "Multi-wavelength study of the galactic PeVatron candidate LHAASO J2108+5157"  (arXiv:2210.00775)

5. F. Iocco, M. Meyer, M. Doro, (incl. K. Hayashi) et al., "Probing Dark Matter and Fundamental Physics with the Cherenkov Telescope Array" ,  2021, (arXiv:2106.03582)  

6. The Cherenkov Telescope Array Consortium, "Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation", Journal of Cosmology and Astroparticle Physics, Issue 02, article id. 048, 2021 (arXiv: 2010.01349)

The the list of my proceedings and non-referred journals from HERE (ADS)