Publications

2026

• Kimura, …, Morokuma, et al., “Deep Optical Follow-up Observations to IceCube Cosmic Neutrinos: a case for IC230724A with Subaru/HSC and prospects with Rubin/LSST”, submitted to ApJ. (arXiv:2606.01158)

• Choi, …, Akitaya, et al., “Dust Properties of the Interstellar Object 3I/ATLAS Revealed by Optical and Near-Infrared Polarimetry”, ApJL, 1000, L29.  https://doi.org/10.3847/2041-8213/ae497c

2025

• Takahashi, Morokuma, …, Akitaya, et al., “J-GEM near-infrared follow-up observations of the gravitational wave event S240422ed”, PASJ, psaf122.  https://doi.org/10.1093/pasj/psaf122

• Kimura, …, Akitaya, et al., “Mechanical Properties of Dust, Pebbles, and Planetesimals Based on Johnson–Kendall–Roberts, Griffith, and Weibull Theories”, ApJ, 994 100. https://doi.org/10.3847/1538-4357/ae0c18

• Kimura, …, Akitaya, et al., “Tensile Strength of Dust, Pebbles, and Planetesimals: A Simple Mathematical Formula from Aggregates to Monoliths Based on an Extension of an Elastic Theory for Particle Assemblies to Molecular Networks”, ApJ, 993, 211. https://doi.org/10.3847/1538-4357/ae0718

• Tanaka, …, Morokuma, …, et al., “Second-timescale Glints from Satellites and Space Debris Detected with Tomo-e Gozen”, ApJ, 994, 175. https://doi.org/10.1117/10.3847/1538-4357/ae0f99

• Morokuma, et al., “A Possible Shutting-Down Event of Mass Accretion in An Active Galactic Nucleus at z~1.8”, PASJ, psaf115. https://doi.org/10.1093/pasj/psaf115

• Toshikage, …, Morokuma, et al., “The First Search for Optical Transient as a Counterpart of a Month-timescale IceCube Neutrino Multiplet Event”, ApJ, 993, 23. https://doi.org/10.3847/1538-4357/adfedf

• Yonetoku, …, Akitaya, et al., “Concept of High-z gamma-ray bursts unraveling the dark ages and extreme space-time mission – HiZ-GUNDAM”, JATIS, 11, 044002. https://doi.org/10.1117/1.JATIS.11.4.044002

• Tsumura, … Akitaya, et al., “Concept of the multiband optical and near-infrared simultaneous telescope for efficient response onboard the HiZ-GUNDAM Satellite”, JATIS, 3, 034002. https://doi.org/10.1117/1.JATIS.11.3.034002

• Bumhoo, …, Akitaya, et al., 2025, “Optical and Near-Infrared Contemporaneous Polarimetry of C/2023 A3 (Tsuchinshan-ATLAS)”, ApJL, 983, L19. https://doi.org/10.3847/2041-8213/adc2f9

• MAGIC Collaboration, …, Akitaya, et al., 2025, “Insights from the first flaring activity of a high synchrotron peaked blazar with X-ray polarization and VHE gamma rays”, A&A, 695, A217. https://doi.org/10.1051/0004-6361/202452785

• Nakamori, …, and Akitaya, “Optical photon-counting observation of the Crab pulsar with the Kanata telescope using a prototype IMONY”, 2025, PASJ, 77, 425. https://doi.org/10.1093/pasj/psaf009

• Yoshida, …, Akitaya, et al., 2025, “Formation of the International Occultation Timing Association/East Asia (IOTA/EA) and occultation observations of asteroid (3200) Phaethon”, Philos Trans A Math Phys Eng Sci, 383(2291). https://doi.org/10.1098/rsta.2024.0190

2024

• Toshikage, …, Morokuma, et al. 2024, “A Systematic Search for Rapid Transients in the Subaru HSC-SSP Transient Survey”, ApJ, 977, 18.  https://ui.adsabs.harvard.edu/link_gateway/2024ApJ…977…18T/doi:10.3847/1538-4357/ad8647; doi: https://doi.org/10.3847/1538-4357/ad8647

• Jin, …, Akitaya, et al. 2024, “New evidence supporting past dust ejections from active asteroid (4015) Wilson–Harrington”, A&A, 690, A193. https://doi.org/10.1051/0004-6361/202451225

• Arimatsu, .., Akitaya, et al. 2024, “Diffraction modelling of a 2023 March 5 stellar occultation by a subkilometer sized asteroid (98943) 2001 CC21”, PASJ, pase060. https://doi.org/10.1093/pasj/psae060

• Chen, …, Akitaya, et al. 2024, “X-Ray and Multiwavelength Polarization of Mrk 501 from 2022 to 2023”, ApJ, 974, 50. https://doi.org/10.3847/1538-4357/ad63a1

• Marshall, …, Akitaya, et al. 2024, “Observations of Low and Intermediate Spectral Peak Blazars with the Imaging X-ray Polarimetry Explorer”, ApJ, 972. 74.  https://doi.org/10.3847/1538-4357/ad5671

• Kouch, …, Akitaya, et al. 2024, “IXPE observation of PKS 2155−304 reveals the most highly polarized blazar”, A&A, 689, A119.  https://doi.org/10.1051/0004-6361/202449166

• MAGIC Collaboration, …, Akitaya, et al., 2024 “Insights into the broadband emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements”, A&A, 685, A117; https://doi.org/10.1051/0004-6361/202348709

• Abe, … Akitaya, et al. 2024, “First characterization of the emission behavior of Mrk 421 from radio to very high-energy gamma rays with simultaneous X-ray polarization measurements”, A&A, 684, A127. https://doi.org/10.1051/0004-6361/202347988

• Morokuma, “Optical-Infrared Searches for Identifying the IceCube High-Energy Neutrino Sources”, 2024, 38th International Cosmic Ray Conference, held 26 July-3 August, 2023 in Nagoya, Japan. Published September 27, 2024. Online at https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=444, id.1559

• Akitaya, Morokuma, and Kawabata, “A high throughput imager at near-ultraviolet wavelengths for a ground-based telescope”, 2024, Proc. SPIE, 13096, 130963G; http://dx.doi.org/10.1117/12.3013630

• Yatsu, …, Morokuma, et al., “Development of wide-field UV transient exploration satellite PETREL”, 2024, Proc. SPIE, 13093, 130930F; http://dx.doi.org/10.1117/12.3019860

• Tsumura, …, Akitaya, …, et al. “Development of an optical and near-infrared telescope onboard the HiZ-GUNDAM mission”, 2024, Proc. SPIE, 13092, 130922B; https://doi.org/10.1117/12.3013597

• Kawabata, …, Akitaya, et al. “Design and fabrication of the double Kösters prism for NIR telescope of HiZ-GUNDAM satellite”, 2024, Proc. SPIE, 13092, 130926Z; https://doi.org/10.1117/12.3016203

• Togashi, …, Akitaya, et al. “Development of the software algorithm for detection of gamma-ray bursts for HiZ-GUNDAM mission”, 2004, Proc. SPIE, 13093, 130936B; https://doi.org/10.1117/12.3018566

2025

• Taguchi, …, Akitaya, Morokuma, et al., 2025-11-17, GCN Circular 42725

• Taguchi, …, Morokuma, et al., 2025-08-23, GCN Circular 41505

• McMahon, …, Morokuma, et al., 2025-05-13, GCN Circular 40455

• Zhang, …, Morokuma, et al., 2025-04-24, GCN Circular 40221

• Takahashi, …, Morokuma, et al., 2025-03-11, GCN Circular 39666

2024

• Takahashi, …, Morokuma, …, Akitaya, et al., 2024-04-27, GCN Circular 36333

• Morokuma, …, Akitaya, et al., 2024-04-25, GCN Circular 36302

• Morokuma, et al., 2024-04-23, GCN Circular 36265;