Papers - IWAI Kazumasa
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Solar Polar Brightening and Radius at 100 and 230GHz Observed by ALMA Reviewed
Selhorst Caius L, Simoes Paulo J. A, Brajsa Roman, Valio Adriana, Gimenez de, Castro C. G, Costa Joaquim E. R, Menezes Fabian, Pierre Rozelot Jean, Hales Antonio S, Iwai Kazumasa, White Stephen
ASTROPHYSICAL JOURNAL Vol. 871 ( 1 ) 2019.1
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Detection of Propagating Fast Sausage Waves through Detailed Analysis of a Zebra-pattern Fine Structure in a Solar Radio Burst Reviewed
K. Kaneda, H. Misawa, K. Iwai, S. Masuda, F. Tsuchiya, Y. Katoh, T. Obara
Astrophysical Journal Letters Vol. 855 ( 2 ) 2018.3
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Solar ALMA Observations: Constraining the Chromosphere above Sunspots Reviewed
Maria A. Loukitcheva, Kazumasa Iwai, Sami K. Solanki, Stephen M. White, Masumi Shimojo
ASTROPHYSICAL JOURNAL Vol. 850 ( 1 ) 2017.11
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Variation of the Solar Microwave Spectrum in the Last Half Century Reviewed
Masumi Shimojo, Kazumasa Iwai, Ayumi Asai, Satoshi Nozawa, Tetsuhiro Minamidani, Masao Saito
ASTROPHYSICAL JOURNAL Vol. 848 ( 1 ) 2017.10
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OCTAD-S: digital fast Fourier transform spectrometers by FPGA Reviewed
Kazumasa Iwai, Yuki Kubo, Hiromitsu Ishibashi, Takahiro Naoi, Kenichi Harada, Kenji Ema, Yoshinori Hayashi, Yuichi Chikahiro
EARTH PLANETS AND SPACE Vol. 69 page: 95 2017.7
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Observing the Sun with the Atacama Large Millimeter/submillimeter Array (ALMA): Fast-Scan Single-Dish Mapping Reviewed
S. M. White, K. Iwai, N. M. Phillips, R. E. Hills, A. Hirota, P. Yagoubov, G. Siringo, M. Shimojo, T. S. Bastian, A. S. Hales, T. Sawada, S. Asayama, M. Sugimoto, R. G. Marson, W. Kawasaki, E. Muller, T. Nakazato, K. Sugimoto, R. Brajsa, I. Skokic, M. Barta, S. Kim, A. J. Remijan, I. de Gregorio, S. A. Corder, H. S. Hudson, M. Loukitcheva, B. Chen, B. De Pontieu, G. D. Fleishmann, D. E. Gary, A. Kobelski, S. Wedemeyer, Y. Yan
SOLAR PHYSICS Vol. 292 ( 7 ) 2017.7
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ALMA Discovery of Solar Umbral Brightness Enhancement at lambda=3 mm Reviewed International coauthorship International journal
Kazumasa Iwai, Maria Loukitcheva, Masumi Shimojo, Sami K. Solanki, Stephen M. White
ASTROPHYSICAL JOURNAL LETTERS Vol. 841 ( 2 ) page: L20 2017.6
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Polarization Characteristics of Zebra Patterns in Type IV Solar Radio Bursts Reviewed
K. Kaneda, H. Misawa, K. Iwai, F. Tsuchiya, T. Obara, Y. Katoh, S. Masuda
ASTROPHYSICAL JOURNAL Vol. 842 ( 1 ) 2017.6
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The First ALMA Observation of a Solar Plasmoid Ejection from an X-Ray Bright Point Reviewed International coauthorship International journal
Masumi Shimojo, Hugh S. Hudson, Stephen M. White, Timothy S. Bastian, Kazumasa Iwai
ASTROPHYSICAL JOURNAL LETTERS Vol. 841 ( 1 ) 2017.5
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The Brightness Temperature of the Quiet Solar Chromosphere at 2.6 mm Reviewed International coauthorship International journal
Kazumasa Iwai, Masumi Shimojo, Shinichiro Asayama, Tetsuhiro Minamidani, Stephen White, Timothy Bastian, Masao Saito
SOLAR PHYSICS Vol. 292 ( 1 ) page: 22 2017.1
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Microwave observations of a large-scale coronal wave with the Nobeyama radioheliograph Reviewed
A. Warmuth, K. Shibasaki, K. Iwai, G. Mann
ASTRONOMY & ASTROPHYSICS Vol. 593 2016.9
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CORONAL MAGNETIC FIELDS DERIVED FROM SIMULTANEOUS MICROWAVE AND EUV OBSERVATIONS AND COMPARISON WITH THE POTENTIAL FIELD MODEL Reviewed
Shun Miyawaki, Kazumasa Iwai, Kiyoto Shibasaki, Daikou Shiota, Satoshi Nozawa
ASTROPHYSICAL JOURNAL Vol. 818 ( 1 ) 2016.2
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CHROMOSPHERIC SUNSPOTS IN THE MILLIMETER RANGE AS OBSERVED BY THE NOBEYAMA RADIOHELIOGRAPH Reviewed
Kazumasa Iwai, Hideki Koshiishi, Kiyoto Shibasaki, Satoshi Nozawa, Shun Miyawaki, Takuro Yoneya
ASTROPHYSICAL JOURNAL Vol. 816 ( 2 ) page: 91 2016.1
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FREQUENCY DEPENDENCE OF POLARIZATION OF ZEBRA PATTERN IN TYPE-IV SOLAR RADIO BURSTS Reviewed
Kazutaka Kaneda, H. Misawa, K. Iwai, F. Tsuchiya, T. Obara
ASTROPHYSICAL JOURNAL LETTERS Vol. 808 ( 2 ) 2015.8
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SOLAR MICRO-TYPE III BURST STORMS AND LONG DIPOLAR MAGNETIC FIELD IN THE OUTER CORONA Reviewed
A. Morioka, Y. Miyoshi, K. Iwai, Y. Kasaba, S. Masuda, H. Misawa, T. Obara
ASTROPHYSICAL JOURNAL Vol. 808 ( 2 ) 2015.8
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OBSERVATION OF THE CHROMOSPHERIC SUNSPOT AT MILLIMETER RANGE WITH THE NOBEYAMA 45 m TELESCOPE Reviewed
Kazumasa Iwai, Masumi Shimojo
ASTROPHYSICAL JOURNAL Vol. 804 ( 1 ) page: 48 2015.5
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Coronal magnetic field and the plasma beta determined from radio and multiple satellite observations Invited Reviewed
Iwai Kazumasa, Shibasaki, K., Nozawa, S., Takahashi, T., Sawada, S., Kitagawa, J., Miyawaki, S. and Kashiwagi, H.
Earth Planets and Space Vol. 66 page: 149 2014.11
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SPECTRAL STRUCTURES AND THEIR GENERATION MECHANISMS FOR SOLAR RADIO TYPE-I BURSTS Reviewed
K. Iwai, Y. Miyoshi, S. Masuda, F. Tsuchiya, A. Morioka, H. Misawa
ASTROPHYSICAL JOURNAL Vol. 789 ( 1 ) page: 4 2014.7
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GENERATION MECHANISM OF THE SLOWLY DRIFTING NARROWBAND STRUCTURE IN THE TYPE IV SOLAR RADIO BURSTS OBSERVED BY AMATERAS Reviewed
Y. Katoh, K. Iwai, Y. Nishimura, A. Kumamoto, H. Misawa, F. Tsuchiya, T. Ono
ASTROPHYSICAL JOURNAL Vol. 787 ( 1 ) 2014.5
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Kazumasa Iwai, Kiyoto Shibasaki
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN Vol. 65 ( SP1 ) page: S14 2013.12