First-authored, refereed papers of Kazumasa Iwai


A list of first-authored, refereed publications of Kazumasa Iwai, derived from the SAO/NASA Astrophysics Data System (ADS). The number in brackets after each title indicates the number of citations that the paper has received.

Orcid ID: 0000-0002-2464-5212

List of publications ordered by citations
Number of papers: 14
No. of citations: 270

2021

  1. Validation of coronal mass ejection arrival-time forecasts by magnetohydrodynamic simulations based on interplanetary scintillation observations [26]
    Iwai, Kazumasa, Shiota, Daikou, Tokumaru, Munetoshi, Fujiki, Ken'ichi, Den, Mitsue & Kubo, Yûki, Earth, Planets and Space, 73, 9

2020

  1. Spectral Structures of Type II Solar Radio Bursts and Solar Energetic Particles [9]
    Iwai, Kazumasa, Yashiro, Seiji, Nitta, Nariaki V. & Kubo, Yûki, ApJ, 888, 50

2019

  1. Development of a coronal mass ejection arrival time forecasting system using interplanetary scintillation observations [24]
    Iwai, Kazumasa, Shiota, Daikou, Tokumaru, Munetoshi, Fujiki, Ken'ichi, Den, Mitsue & Kubo, Yûki, Earth, Planets and Space, 71, 39

2017

  1. The Brightness Temperature of the Quiet Solar Chromosphere at 2.6 mm [19]
    Iwai, Kazumasa, Shimojo, Masumi, Asayama, Shinichiro, Minamidani, Tetsuhiro, White, Stephen, Bastian, Timothy & Saito, Masao, Solar Physics, 292, 22
  2. OCTAD-S: digital fast Fourier transform spectrometers by FPGA [20]
    Iwai, Kazumasa, Kubo, Yûki, Ishibashi, Hiromitsu, Naoi, Takahiro, Harada, Kenichi, Ema, Kenji, Hayashi, Yoshinori & Chikahiro, Yuichi, Earth, Planets and Space, 69, 95
  3. ALMA Discovery of Solar Umbral Brightness Enhancement at λ = 3 mm [18]
    Iwai, Kazumasa, Loukitcheva, Maria, Shimojo, Masumi, Solanki, Sami K. & White, Stephen M., ApJ, 841, L20

2016

  1. Chromospheric Sunspots in the Millimeter Range as Observed by the Nobeyama Radioheliograph [17]
    Iwai, Kazumasa, Koshiishi, Hideki, Shibasaki, Kiyoto, Nozawa, Satoshi, Miyawaki, Shun & Yoneya, Takuro, ApJ, 816, 91

2015

  1. Observation of the Chromospheric Sunspot at Millimeter Range with the Nobeyama 45 m Telescope [19]
    Iwai, Kazumasa & Shimojo, Masumi, ApJ, 804, 48

2014

  1. Spectral Structures and Their Generation Mechanisms for Solar Radio Type-I Bursts [16]
    Iwai, K., Miyoshi, Y., Masuda, S., Tsuchiya, F., Morioka, A. & Misawa, H., ApJ, 789, 4
  2. Coronal magnetic field and the plasma beta determined from radio and multiple satellite observations [22]
    Iwai, Kazumasa, Shibasaki, Kiyoto, Nozawa, Satoshi, Takahashi, Takuya, Sawada, Shinpei, Kitagawa, Jun, Miyawaki, Shun & Kashiwagi, Hirotaka, Earth, Planets and Space, 66, 149

2013

  1. Peak Flux Distributions of Solar Radio Type-i Bursts from Highly Resolved Spectral Observations [18]
    Iwai, K., Masuda, S., Miyoshi, Y., Tsuchiya, F., Morioka, A. & Misawa, H., ApJ, 768, L2
  2. Measurements of Coronal and Chromospheric Magnetic Fields using Polarization Observations by the Nobeyama Radioheliograph [14]
    Iwai, Kazumasa & Shibasaki, Kiyoto, Publications of the Astronomical Society of Japan, 65, S14

2012

  1. IPRT/AMATERAS: A New Metric Spectrum Observation System for Solar Radio Bursts [27]
    Iwai, K., Tsuchiya, F., Morioka, A. & Misawa, H., Solar Physics, 277, 447
  2. Solar Radio Type-I Noise Storm Modulated by Coronal Mass Ejections [21]
    Iwai, K., Miyoshi, Y., Masuda, S., Shimojo, M., Shiota, D., Inoue, S., Tsuchiya, F., Morioka, A. & Misawa, H., ApJ, 744, 167


Created on Wed Apr 8 04:30:15 2026.