Faculty Information - 秋田谷　洋

Academic background

Present specialized field

Research activities

Works

Committee and society

（Last updated : 2024-12-03 12:15:04）

秋田谷　洋
Astronomy Research Center(ARC)

Senior Research Scientist

■ Academic background

1.	1999/04～2006/03	〔Doctorial Course (2nd Semester)〕 Astronomical Institute, Graduate School, Division of Natural Science, Tohoku University, Completed, Ph. D.
2.	1997/04～1999/03	〔Doctorial Course (1st Semester)〕 Astronomical Institute, Graduate School, Division of Natural Science, Tohoku University, Completed,
3.	1993/04～1997/03	Faculty of Science, Tohoku University, Graduated,

■ Present specialized field

astronomy (Key Word：astronomy, instrumentation, optical and near-infrared wavelengths)

■ Research activities

1.	2023/08～	International Occultation Timing Association - East Asia
2.	2023/08～	∟ web site management
3.	2009～	International Astronomical Union
4.	2000～	The Astronomical Society of Japan
5.	1997～	Group of Optical and Infrared Astronomers

■ Works

1.	Article	Diffraction modelling of a 2023 March 5 stellar occultation by subkilometer-sized asteroid (98943) 2001 CC21 Publications of the Astronomical Society of Japan (Collaboration) 2024/10/03
2.	Article	New evidence supporting past dust ejections from active asteroid (4015) Wilson–Harrington Astronomy & Astrophysics (Collaboration) 2024/10
3.	Article	A high throughput imager at near-ultraviolet wavelengths for a ground-based telescope Ground-based and Airborne Instrumentation for Astronomy X pp.130-130 (Collaboration) 2024/07/18
4.	Article	Insights into the broadband emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements Astronomy & Astrophysics (Collaboration) 2024/05
5.	Article	LIGO/Virgo/KAGRA S240422ed: Further near-infrared observations with Subaru/MOIRCS by J-GEM Collaboration GRB Coordinates Network 36302,pp.1-1 (Collaboration) 2024/04
6.	Article	Detection of X-Ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-Ray Polarimetry Explorer The Astrophysical Journal (Collaboration) 2024/03/01
7.	Article	Tomographic Imaging of the Sagittarius Spiral Arm's Magnetic Field Structure The Astrophysical Journal (Collaboration) 2024/01/01
8.	Article	Magnetic field properties inside the jet of Mrk 421 Astronomy & Astrophysics (Collaboration) 2024/01
9.	Article	IXPE observation of PKS 2155-304 reveals the most highly polarized blazar (Collaboration) 2024
10.	Article	Discovery of X-ray polarization angle rotation in the jet from blazar Mrk 421 Nature Astronomy (Collaboration) 2023/07/17
11.	Article	Spectral type and geometric albedo of (98943) 2001 CC21, the Hayabusa2# mission target Monthly Notices of the Royal Astronomical Society: Letters (Collaboration) 2023/07/04
12.	Article	Hello from planetary labs! (8) - Planetary Exploration Research Center at Chiba Institute of Technology - pp.142-149 (Collaboration) 2023/06/25
13.	Article	Follow-up Survey for the Binary Black Hole Merger GW200224_222234 Using Subaru/HSC and GTC/OSIRIS The Astrophysical Journal pp.9-9 (Collaboration) 2023/04/01
14.	Article	Multi-chord observation of stellar occultation by the near-Earth asteroid (3200) Phaethon on 2021 October 3 (UTC) with very high accuracy Publications of the Astronomical Society of Japan 75(1),pp.153-168 (Collaboration) 2022/12/20
15.	Article	The microvariability and wavelength dependence of polarization degree/angle of BL Lacertae in the outburst 2020 to 2021 Publications of the Astronomical Society of Japan (Collaboration) 2022/11/12
16.	Article	Optical and near-infrared photometric and polarimetric monitoring at flaring state of BL Lacertae in 2020–2021 Publications of the Astronomical Society of Japan 74(5),pp.1041-1048 (Collaboration) 2022/10/03
17.	Article	(3200) Phaethon polarimetry in the negative branch: new evidence for the anhydrous nature of the DESTINY+ target asteroid Monthly Notices of the Royal Astronomical Society: Letters 516(1),pp.L53-L57 (Collaboration) 2022/07/11
18.	Article	Kottamia Faint Imaging Spectro-Polarimeter (KFISP): opto-mechanical design, software control and performance analysis Experimental Astronomy 53(1),pp.45-70 (Collaboration) 2022/02
19.	Article	The Microvariability and Wavelength Dependence of Polarization Vector of BL Lacertae in the Outburst 2020 to 2021 Proceedings of the International Astronomical Union (Collaboration) 2021/12
20.	Article	Polarimetric properties of the near-Sun asteroid (155140) 2005 UD in comparison with other asteroids and meteoritic samples Monthly Notices of the Royal Astronomical Society 509(3),pp.4128-4142 (Collaboration) 2021/11/09
21.	Article	Kottamia Faint Imaging Spectro-Polarimeter (KFISP): opto-mechanical design, software control and performance analysis Experimental Astronomy 53(1),pp.45-70 (Collaboration) 2021/10/13
22.	Article	Origins of the Long-term Variability of the Near-infrared Emission of the Black Hole X-Ray Binary GRS 1915+105 in the X-Ray Low Luminous State The Astrophysical Journal 916(2),pp.114 (Collaboration) 2021/08/01
23.	Article	Implications of High Polarization Degree for the Surface State of Ryugu The Astrophysical Journal Letters 911(2),pp.L24 (Collaboration) 2021/04/01
24.	Article	ASASSN-18aan: An eclipsing SU UMa-type cataclysmic variable with a 3.6-hr orbital period and a late G-type secondary star Publications of the Astronomical Society of Japan 73(5),pp.1209-1224 (Collaboration) 2021/02/07
25.	Article	Optical follow-up observation for GW event S190510g using Subaru/Hyper Suprime-Cam Publications of the Astronomical Society of Japan 73(2),pp.350-364 (Collaboration) 2021/02/04
26.	Article	J-GEM optical and near-infrared follow-up of gravitational wave events during LIGO’s and Virgo’s third observing run Progress of Theoretical and Experimental Physics 2021(5) (Collaboration) 2021/01/28
27.	Article	(KFISP) Kottamia faint imaging spectro-polarimeter: opto-mechanical design and performance analysis Ground-based and Airborne Instrumentation for Astronomy VIII (Collaboration) 2020/12/13
28.	Article	Development of an optical and near-infrared telescope onboard the HiZ-GUNDAM mission Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave (Collaboration) 2020/12/13
29.	Article	Development of an optical photon counting imager using a monolithic Geiger APD array X-Ray, Optical, and Infrared Detectors for Astronomy IX (Collaboration) 2020/12/13
30.	Article	High-z gamma-ray bursts unraveling the dark ages and extreme space-time mission: HiZ-GUNDAM Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray 11444,pp.114442Z (Collaboration) 2020/12/13
31.	Article	Multi-wavelength SimultaneouS High throughput Imager and polarimeter (MuSaSHI): development and its performance Ground-based and Airborne Instrumentation for Astronomy VIII (Collaboration) 2020/12/13
32.	Article	IceCube-201130A: Optical and NIR Imaging Follow-up by Kanata Telescope GRB Coordinates Network 29008,pp.1-1 (Collaboration) 2020/12
33.	Article	Time-resolved spectroscopy and photometry of M dwarf flare star YZ Canis Minoris with OISTER and TESS: Blue asymmetry in the Hα line during the non-white light flare Publications of the Astronomical Society of Japan (Collaboration) 2020/11/02
34.	Article	Multi-wavelength photometry during the 2018 superoutburst of the WZ Sge-type dwarf nova EG Cancri Publications of the Astronomical Society of Japan 73(1),pp.1-13 (Collaboration) 2020/10/02
35.	Article	Evidence for planetary hypothesis for PTFO 8-8695 b with five-year optical/infrared monitoring observations Publications of the Astronomical Society of Japan 72(2) (Collaboration) 2020/04/01
36.	Article	SN 2019ein: New Insights into the Similarities and Diversity among High-velocity Type Ia Supernovae The Astrophysical Journal 893(2),pp.143 (Collaboration) 2020/04/01
37.	Article	Multiband optical flux density and polarization microvariability study of optically bright blazars Monthly Notices of the Royal Astronomical Society 492(1),pp.1295-1317 (Collaboration) 2020/02/11
38.	Article	LIGO/Virgo S191213g: No candidates found in J-GEM follow-up observations GRB Coordinates Network 26477,pp.1-1 (Collaboration) 2019/12
39.	Article	Near-infrared monitoring of the accretion outburst in the massive young stellar object S255-NIRS3 Publications of the Astronomical Society of Japan 72(1),pp.4 (Collaboration) 2019/11/20
40.	Article	SN 2018hna: 1987A-like Supernova with a Signature of Shock Breakout The Astrophysical Journal Letters 882(2),pp.L15 (Collaboration) 2019/09/05
41.	Article	On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc Monthly Notices of the Royal Astronomical Society 488(3),pp.3089-3099 (Collaboration) 2019/07/11
42.	Article	Comparison of polarization at two lunar eclipse events Publications of the Astronomical Society of Japan 71(2),pp.6 (Collaboration) 2019/03/09
43.	Article	Extended optical/NIR observations of Type Iax supernova 2014dt: Possible signatures of a bound remnant Publications of the Astronomical Society of Japan 70(6),pp.111 (Collaboration) 2018/12/01
44.	Article	High polarization degree of the continuum of comet 2P/Encke based on spectropolarimetric signals during its 2017 apparition Astronomy & Astrophysics 620,pp.A161 (Collaboration) 2018/12
45.	Article	X-Ray, Optical, and Near-infrared Monitoring of the New X-Ray Transient MAXI J1820+070 in the Low/Hard State The Astrophysical Journal 868(1),pp.54 (Collaboration) 2018/11/20
46.	Article	The Low-luminosity Type IIP Supernova 2016bkv with Early-phase Circumstellar Interaction The Astrophysical Journal 859(2),pp.78 (Collaboration) 2018/05/25
47.	Article	Optical and Near-infrared Polarimetry of Non-periodic Comet C/2013 US10 (Catalina) The Astronomical Journal 154(4),pp.173-173 (Collaboration) 2017/10/01
48.	Article	OISTER optical and near-infrared monitoring observations of peculiar radio-loud active galactic nucleus SDSS J110006.07+442144.3 Publications of the Astronomical Society of Japan 69(5) (Collaboration) 2017/09/01
49.	Article	Broad-lined Supernova 2016coi with a Helium Envelope The Astrophysical Journal 837(1),pp.1 (Collaboration) 2017/02/27
50.	Article	A measurement of interstellar polarization and an estimation of Galactic extinction for the direction of the X-ray black hole binary V404 Cygni Publications of the Astronomical Society of Japan 69(2),pp.25 (Collaboration) 2017/02/15
51.	Article	SYSTEMATIC STUDY OF GAMMA-RAY-BRIGHT BLAZARS WITH OPTICAL POLARIZATION AND GAMMA-RAY VARIABILITY The Astrophysical Journal 833(1),pp.77 (Collaboration) 2016/12/08
52.	Article	2014–2015 MULTIPLE OUTBURSTS OF 15P/FINLAY The Astronomical Journal 152(6),pp.169-169 (Collaboration) 2016/11/21
53.	Article	MULTIFREQUENCY PHOTO-POLARIMETRIC WEBT OBSERVATION CAMPAIGN ON THE BLAZAR S5 0716+714: SOURCE MICROVARIABILITY AND SEARCH FOR CHARACTERISTIC TIMESCALES* The Astrophysical Journal 831(1),pp.92 (Collaboration) 2016/10/28
54.	Article	NO EVIDENCE OF INTRINSIC OPTICAL/NEAR-INFRARED LINEAR POLARIZATION FOR V404 CYGNI DURING ITS BRIGHT OUTBURST IN 2015: BROADBAND MODELING AND CONSTRAINT ON JET PARAMETERS The Astrophysical Journal 823(1),pp.35 (Collaboration) 2016/05/19
55.	Article	OISTER optical and near-infrared observations of the super-Chandrasekhar supernova candidate SN 2012dn: Dust emission from the circumstellar shell Publications of the Astronomical Society of Japan 68(5),pp.68 (Collaboration) 2016/05/18
56.	Article	Polarization angle swings in blazars: The case of 3C 279 Astronomy & Astrophysics 590,pp.A10 (Collaboration) 2016/04/28
57.	Article	Photometric and Polarimetric Observations of Be/X-Ray and Be/Gamma-Ray Binaries BRIGHT EMISSARIES: BE STARS AS MESSENGERS OF STAR-DISK PHYSICS 506,pp.295-298 (Collaboration) 2016
58.	Article	OPTICAL AND NEAR-INFRARED POLARIMETRY FOR A HIGHLY DORMANT COMET 209P/LINEAR The Astrophysical Journal 814(2),pp.156 (Collaboration) 2015/12/01
59.	Article	OPTICAL-INFRARED AND HIGH-ENERGY ASTRONOMY COLLABORATION AT HIROSHIMA ASTROPHYSICAL SCIENCE CENTER Publications of The Korean Astronomical Society 30(2),pp.679-682 (Collaboration) 2015/09/30
60.	Article	DISCOVERY OF A HIGHLY POLARIZED OPTICAL MICROFLARE IN BLAZAR S5 0716+714 DURING THE 2014 WEBT CAMPAIGN The Astrophysical Journal 809(2),pp.L27 (Collaboration) 2015/08/18
61.	Article	THE ACCRETING BLACK HOLE SWIFT J1753.5–0127 FROM RADIO TO HARD X-RAY The Astrophysical Journal 808(1),pp.85-85 (Collaboration) 2015/07/22
62.	Article	RAPID VARIABILITY OF BLAZAR 3C 279 DURING FLARING STATES IN 2013−2014 WITH JOINTFERMI-LAT,NuSTAR,SWIFT, AND GROUND-BASED MULTI-WAVELENGTH OBSERVATIONS The Astrophysical Journal 807(1),pp.79-79 (Collaboration) 2015/07/02
63.	Article	OISTER OPTICAL AND NEAR-INFRARED OBSERVATIONS OF TYPE Iax SUPERNOVA 2012Z The Astrophysical Journal 806(2),pp.191 (Collaboration) 2015/06/18
64.	Article	PROBING THE NATURE OF THE TeV γ -RAY BINARY HESS J0632+057 BY MONITORING Be DISK VARIABILITY The Astrophysical Journal 804(2) (Collaboration) 2015/05/07
65.	Article	MULTI-WAVELENGTH OBSERVATIONS OF THE BLACK WIDOW PULSAR 2FGL J2339.6-0532 WITH OISTER ANDSUZAKU The Astrophysical Journal 802(2),pp.84 (Collaboration) 2015/03/25
66.	Article	Optical Low Resolution Spectroscopic Observations of T Pyx during the Early Phase of 2011 Outburst Acta Polytechnica CTU Proceedings 2(1),pp.257-260 (Collaboration) 2015/02/23
67.	Article	DUST FROM COMET 209P/LINEAR DURING ITS 2014 RETURN: PARENT BODY OF A NEW METEOR SHOWER, THE MAY CAMELOPARDALIDS The Astrophysical Journal 798(2),pp.L34 (Collaboration) 2014/12/31
68.	Article	DUST FROM COMET 209P/LINEAR DURING ITS 2014 RETURN: PARENT BODY OF A NEW METEOR SHOWER, THE MAY CAMELOPARDALIDS The Astrophysical Journal 798(2),pp.L34-L34 (Collaboration) 2014/12/31
69.	Article	Kiso Supernova Survey (KISS): Survey strategy Publications of the Astronomical Society of Japan 66(6),pp.114 (Collaboration) 2014/12/01
70.	Article	Variable optical polarization during high state in γ-ray loud, narrow-line Seyfert 1 galaxy 1H 0323+342 Publications of the Astronomical Society of Japan 66(6),pp.108 (Collaboration) 2014/11/12
71.	Article	OPTICAL AND NEAR-INFRARED POLARIMETRY OF HIGHLY REDDENED Type Ia SUPERNOVA 2014J: PECULIAR PROPERTIES OF DUST IN M82 The Astrophysical Journal 795(1),pp.L4 (Collaboration) 2014/10/13
72.	Article	DISCOVERY OF DRAMATIC OPTICAL VARIABILITY IN SDSS J1100+4421: A PECULIAR RADIO-LOUD NARROW-LINE SEYFERT 1 GALAXY? The Astrophysical Journal 793(2),pp.L26 (Collaboration) 2014/09/11
73.	Article	Development of a new readout system for the near-infrared detector of HONIR SPIE Proceedings 9147,pp.6 (Collaboration) 2014/07/08
74.	Article	EXTREMELY HIGH POLARIZATION IN THE 2010 OUTBURST OF BLAZAR 3C 454.3 The Astrophysical Journal 784(2),pp.141-141 (Collaboration) 2014/03/14
75.	Article	EARLY-PHASE PHOTOMETRY AND SPECTROSCOPY OF TRANSITIONAL TYPE Ia SN 2012ht: DIRECT CONSTRAINT ON THE RISE TIME The Astrophysical Journal 782(2),pp.L35-L35 (Collaboration) 2014/02/10
76.	Article	GRB 140423A: Kanata/HONIR Optical and NIR Observations. GRB Coordinates Network 16163,pp.1-1 (Collaboration) 2014/01
77.	Article	MINUTE-SCALE RAPID VARIABILITY OF THE OPTICAL POLARIZATION IN THE NARROW-LINE SEYFERT 1 GALAXY PMN J0948+0022 The Astrophysical Journal pp.L26-L26 (Collaboration) 2013/09/09
78.	Article	A LUMINOUS AND FAST-EXPANDING TYPE Ib SUPERNOVA SN 2012au The Astrophysical Journal 772(2),pp.L17 (Collaboration) 2013/07/11
79.	Article	Phase Variation of Earthshine Polarization Spectra Publications of the Astronomical Society of Japan 65(2),pp.38-38 (Collaboration) 2013/04/25
80.	Article	Photopolarimetric Monitoring of the Blazar BL Lac in the Optical and Near-Infrared Bands: Decay of the Long-Lived Component Publications of the Astronomical Society of Japan 65(2),pp.35 (Collaboration) 2013/04/25
81.	Article	DENSE OPTICAL AND NEAR-INFRARED MONITORING OF CTA 102 DURING HIGH STATE IN 2012 WITH OISTER: DETECTION OF INTRA-NIGHT “ORPHAN POLARIZED FLUX FLARE” The Astrophysical Journal 768(2),pp.L24 (Collaboration) 2013/04/22
82.	Article	A Study of the Long-Term Spectral Variations of 3C 66A Observed with the Fermi and Kanata Telescopes PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 65(1),pp.18-18 (Collaboration) 2013/02
83.	Article	An optical and near-infrared multipurpose instrument HONIR SPIE Proceedings 8446,pp.844673 (Collaboration) 2012/09/24
84.	Article	GRB 120212A: Kanata/HOWPol optical observation. GRB Coordinates Network 12935,pp.1-1 (Collaboration) 2012/01
85.	Article	Estimation of the foreground polarization toward bright T Tauri stars AIP Conference Proceedings pp.35-38 (Collaboration) 2012
86.	Article	Correlation between Interstellar Polarization and Dust Temperature: Is the Alignment of Grains by Radiative Torques Ubiquitous? Publications of the Astronomical Society of Japan 63(5),pp.L43-L47 (Collaboration) 2011/10/25
87.	Article	ORBITAL ELEMENTS OF THE SYMBIOTIC STAR Z ANDROMEDAE FROM OPTICAL LINEAR POLARIZATION DURING THE QUIESCENT PHASE The Astronomical Journal pp.235-241 (Collaboration) 2010/06/11
88.	Article	Studies on evaluating and removing subsurface damage on the ground surface of CLEARCERAM-Z HS 7739,pp.77392E (Collaboration) 2010
89.	Article	Linear polarization in forbidden lines of the T Tauri star RY Tauri Astronomy & Astrophysics 499(1),pp.163-173 (Collaboration) 2009/03/19
90.	Article	Near Net Sintering of Zero Expansion-Pore Free Ceramics by Microwave (Collaboration) 2008/10
91.	Article	Application of zero-expansion pore-free ceramics to a mirror of an astronomical telescope Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation (Collaboration) 2008/07/14
92.	Article	Spectropolarimetry of R Coronae Borealis in 1998-2003: Discovery of Transient Polarization at Maximum Brightness The Astronomical Journal 134(5),pp.1877-1889 (Collaboration) 2007/09/25
93.	Article	Polarized Hα Wings in the Symbiotic Stars AG Draconis and Z Andromedae The Astrophysical Journal 604(1),pp.357-361 (Collaboration) 2004/03/20
94.	Article	Development of high-resolution spectropolarimeter: LIPS SPIE Proceedings 4843,pp.437 (Collaboration) 2003/02/01
95.	Article	The Polarimetric Evidence of the Circumstellar Dust in Symbiotic Star Z Andromedae Mass-Losing Pulsating Stars and their Circumstellar Matter pp.247-248 (Collaboration) 2003
96.	Article	Spectropolarimetric Evidence of Asymmetric Outburst in the Fast Nova V1494 Aquilae The Astrophysical Journal 552(2),pp.782-786 (Collaboration) 2001/05/10
97.	Article	Nova V4444 Sagittarii 1999: Spectropolarimetric Evidence for a Preexisting Circumstellar Dust Cloud The Astrophysical Journal 540(1),pp.429-435 (Collaboration) 2000/09
98.	Article	The spectropolarimetric observations of three outburst objects, CI Camelopardalis, Nova Sagittarii 1998, and U Scorpii Astronomy and Astrophysics 355,pp.256-260 (Collaboration) 2000/03
99.	Article	A New Spectropolarimeter at the Dodaira Observatory Publications of the Astronomical Society of the Pacific 111(761),pp.898-908 (Collaboration) 1999/07
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■ Committee and society

2017/04/01～2018/07/31

Selection committee　for JSPS Reserch Fellowship for Young Scientists Selection committee member