Probing theory of gravity via inhomogeneity of the universe

• Project/Area Number: 20740146
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kinki University
• Principal Investigator: INOUE Kaiki (INOUE KaikiTaro) 近畿大学, 理工学部, 准教授 (70388495)
• Project Period (FY): 2008 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 宇宙論 / 宇宙大規模構造 / 宇宙マイクロ波背景輻射 / 宇宙の非一様性 / 大規模構造 / 宇宙背景輻射

Research Abstract

We find that the evolution of gravitational potential of super-structures in accelerating universes plays an important role as a cause of claimed anomalies in the large-angle cosmic microwave background temperature anisotropy. In particular, the effects of low density regions with a radius of 200-300h/Mpc are most important and their abundance is at odd with the expected value in theΛCDM model at more than 3σlevel.

Research Products

• [Journal Article] On the origin of the cold spot (2012)
  • Author(s): Kaiki Taro Inoue
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 421 Issue: 3 Pages: 2731-2735
  • DOI: 10.1111/j.1365-2966.2012.20513.x
  • Peer Reviewed
• [Journal Article] Evidence of Quasi-linear Super-Structures in the Cosmic Microwave Background and Galaxy Distribution (2010)
  • Author(s): Kaiki Taro Inoue, Nobuyuki Sakai, Kenji Tomita
  • Journal Title: Astrophysical Journal Volume: 724 Issue: 1 Pages: 12-25
  • DOI: 10.1088/0004-637x/724/1/12
  • Peer Reviewed
• [Journal Article] Evidence of Quasi-linear Super-Structures in the Cosmic Microwave Background and Galaxy Distribution (2010)
  • Author(s): Kaiki Taro Inoue, Nobuyuki Sakai, Kenji Tomita
  • Journal Title: Astrophysical Journal 724 Pages: 12-25
  • Peer Reviewed
• [Journal Article] Probing violation of the Copernican principle via the integrated Sachs-Wolfe effect (2009)
  • Author(s): Kenji Tomita, Kaiki Taro Inoue
  • Journal Title: Physical Review D Volume: 79 Issue: 10
  • DOI: 10.1103/physrevd.79.103505
  • Peer Reviewed
• [Journal Article] Probing violation of the Copernican principle via the integrated Sachs-Wolfe effect (2009)
  • Author(s): Kenji Tomita, Kaiki Taro Inoue
  • Journal Title: Physical Review D 79
  • Peer Reviewed
• [Journal Article] Probing violation of the Copernican Principle (2009)
  • Author(s): Kenji Tomita, Kaiki Taro Inoue
  • Journal Title: Physical Review D 79 Pages: 103505-103513
  • Peer Reviewed
• [Journal Article] Cosmic Microwave Background Anisotropy from Nonlinear Structures in Accelerating Universes (2008)
  • Author(s): Nobuyuki Sakai, and Kaiki Taro Inoue
  • Journal Title: Physical Review D Volume: 78 Issue: 6
  • DOI: 10.1103/physrevd.78.063510
  • Peer Reviewed
• [Journal Article] Harmonic Inpainting of the Cosmic Microwave Background Sky : Formulation and Error Estimate (2008)
  • Author(s): Kaiki Taro Inoue, Paolo Cabella, and Eiichiro Komatsu
  • Journal Title: Physical Review D Volume: 77 Issue: 12
  • DOI: 10.1103/physrevd.77.123539
  • Peer Reviewed
• [Journal Article] Second Order Gravitational Effects on CMB Temperature Anisotropy in Lambda Dominated Flat Universes (2008)
  • Author(s): Kenji Tomita and Kaiki Taro Inoue
  • Journal Title: Physical Review D Volume: 77 Issue: 10
  • DOI: 10.1103/physrevd.77.103522
  • Peer Reviewed
• [Journal Article] Cosmic Microwave Background Anisotropy from Nonlinear Structures in Accelerating Universes (2008)
  • Author(s): Nobuyuki Sakai, Kaiki Taro Inoue
  • Journal Title: Physical Review D 78
  • Peer Reviewed
• [Journal Article] Harmonic Inpainting of the Cosmic Microwave Background Sky : Formulation and Error Estimate (2008)
  • Author(s): Kaiki Taro Inoue, Paolo Cabella, Eiichiro Komatsu
  • Journal Title: Physical Review D 77
  • Peer Reviewed
• [Journal Article] Second Order Gravitational Effects on CMB Temperature Anisotropy in Lambda Dominated Flat Universes (2008)
  • Author(s): Kenji Tomita, Kaiki Taro Inoue
  • Journal Title: Physical Review D 77
  • Peer Reviewed
• [Journal Article] Cosmic Microwave Background Anisotropy from Nonlinear Structures in Accelerating Universes (2008)
  • Author(s): Nobuyuki Sakai
  • Journal Title: Physical Review D 78
  • Peer Reviewed
• [Journal Article] Harmonic Inpainting of the Cosmic Microwave Background Sky : Formulation and Error Estimate (2008)
  • Author(s): Kaiki Taro Inoue
  • Journal Title: Physical Review D 77
  • Peer Reviewed
• [Journal Article] Second Order Gravitational Effects on CMB Temperature Anisotropy in Lambda Dominated Flat Universes (2008)
  • Author(s): Kenji Tomita
  • Journal Title: Physical Review D 77
  • Peer Reviewed
• [Presentation] On the origin of the cold spot (2011)
  • Author(s): 井上開輝
  • Organizer: Astrophysics seminar
  • Place of Presentation: University of Oxford, Oxford
  • Year and Date: 2011-10-27
• [Presentation] On the origin of the cold spot (2011)
  • Author(s): 井上開輝
  • Organizer: 竹原研究会
  • Place of Presentation: ホテル大広苑、竹原市
  • Year and Date: 2011-06-13
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background and Galaxy Distribution (2011)
  • Author(s): 井上開輝
  • Organizer: YITP workshop "Cosmological Perturbation and CMB"
  • Place of Presentation: 基礎物理学研究所、京都大学、京都市
  • Year and Date: 2011-03-21
• [Presentation] Anomalously Underdense Region as the Origin of the Cold Spot (2011)
  • Author(s): 井上開輝
  • Organizer: 日本天文学会2011年春季年会
  • Place of Presentation: 新潟大学新潟市
  • Year and Date: 2011-03-19
• [Presentation] On the Origin of the Cold Spot (2010)
  • Author(s): 井上開輝
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学金沢市
  • Year and Date: 2010-09-24
• [Presentation] On the Origin of the Cold Spot (2010)
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学 金沢市
  • Year and Date: 2010-09-24
• [Presentation] Harmonic functions and 3-dimensional topology (2010)
  • Author(s): 井上開輝
  • Organizer: Topology and Computer 2010
  • Place of Presentation: 東京工業大学東京都目黒区
  • Year and Date: 2010-09-09
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background and Galaxy Distribution (2010)
  • Organizer: 地球環境学科セミナー
  • Place of Presentation: 弘前大学 弘前市
  • Year and Date: 2010-08-05
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background and Galaxy Distribution (2010)
  • Author(s): Kaiki Taro Inoue
  • Organizer: 弘前大学 地球環境学科セミナー
  • Place of Presentation: 弘前大学
  • Year and Date: 2010-08-05
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background and Galaxy Distribution (2010)
  • Author(s): 井上開輝
  • Organizer: 日本天文学会2010年春季年会
  • Place of Presentation: 広島大学東広島市
  • Year and Date: 2010-03-24
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background and Galaxy Distribution (2010)
  • Organizer: 日本天文学会2010年春季年会
  • Place of Presentation: 広島大学 東広島市
  • Year and Date: 2010-03-24
• [Presentation] Poster presentation :" Evidence of Super-structures in the Cosmic Microwave Background and Galaxy Distribution" (2010)
  • Author(s): 井上開輝
  • Organizer: Horiba international conference COSMO/CosPA2010
  • Place of Presentation: University of Tokyo, Tokyo
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background and Galaxy Distribution (2010)
  • Organizer: Horiba international conference COSMO/CosPA 2010
  • Place of Presentation: University of Tokyo, Tokyo
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background (2009)
  • Author(s): 井上開輝
  • Organizer: Lambda-LTB Cosmology KEK Workshop 2009 KEK
  • Place of Presentation: つくば市
  • Year and Date: 2009-10-21
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background (2009)
  • Organizer: A-LTB Cosmology KEK Workshop 2009
  • Place of Presentation: KEK つくば市(招待講演)
  • Year and Date: 2009-10-21
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background (2009)
  • Author(s): Kaiki Taro Inoue
  • Organizer: "A-LTB Cosmology" KEK workshop
  • Place of Presentation: KEK茨城県つくば市
  • Year and Date: 2009-10-21
• [Presentation] 宇宙は正二十面体の対称性を持つか? (2009)
  • Author(s): 井上開輝
  • Organizer: Encounter with Mathematics
  • Place of Presentation: 中央大学東京都文京区
  • Year and Date: 2009-10-03
• [Presentation] Weaklensing by Supervoids (2009)
  • Author(s): 井上開輝
  • Organizer: 日本天文学会2009年秋季年会
  • Place of Presentation: 山口大学山口市
  • Year and Date: 2009-09-14
• [Presentation] Weaklensing by Supervoids (2009)
  • Organizer: 日本天文学会2009年秋季年会
  • Place of Presentation: 山口大学 山口市
  • Year and Date: 2009-09-14
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background (2009)
  • Author(s): 井上開輝
  • Organizer: 日本物理学会2009年秋季年会
  • Place of Presentation: 甲南大学神戸市
  • Year and Date: 2009-09-12
• [Presentation] Evidence of Super-structures in the Cosmic Microwave Background (2009)
  • Organizer: 日本物理学会2009年秋季年会
  • Place of Presentation: 甲南大学 神戸市
  • Year and Date: 2009-09-12
• [Presentation] Probing Superstructures via the Integrated Sachs-Wolfe Effect (2009)
  • Author(s): 井上開輝
  • Organizer: NAOC, cosmology seminar talk
  • Place of Presentation: Beijing, China
  • Year and Date: 2009-03-26
• [Presentation] Probing Violation of the Copernican Principle via the Integrated Sachs-Wolfe Effect (2009)
  • Author(s): 井上開輝
  • Organizer: KITPC, Workshop,"Connecting Fundamental Physics with Observations"
  • Place of Presentation: Beijing, China
  • Year and Date: 2009-03-17
• [Presentation] Probing Violation of the Copernican Principle via the Integrated Sachs-Wolfe Effect (2009)
  • Organizer: KITPC Workshop, "Connecting Fundamental Physics with Observations" KITPC
  • Place of Presentation: Beijing, China(招待講演)
  • Year and Date: 2009-03-17
• [Presentation] 積分ザックス・ヴォルフェ効果で探る宇宙の非一様性 (2009)
  • Author(s): 井上開輝
  • Organizer: Tohoku University, Workshop"現代天文学における宇宙の構造形成ビジョン"
  • Place of Presentation: 旅館かつらや宮城県白石市
  • Year and Date: 2009-02-19
• [Presentation] 積分ザックス・ヴォルフェ効果で探る宇宙の非一様性 (2009)
  • Organizer: Tohoku University, Workshop現代天文学における宇宙の構造形成ビジョン
  • Place of Presentation: 旅館かつらや 宮城県白石市(招待講演)
  • Year and Date: 2009-02-19
• [Presentation] Local Supervoids and the Origin of the WMAP Cold Spot (2008)
  • Author(s): 井上開輝
  • Organizer: KEK Cosmophysics Workshop "Is our Universe really undergoing anaccelerated expansion?"
  • Place of Presentation: KEKつくば市
  • Year and Date: 2008-12-10
• [Presentation] Local Supervoids and the Origin of the WMAP Cold Spot (2008)
  • Organizer: KEK Cosmophysics Workshop "Is our Universe really undergoing anaccelerated expansion
  • Place of Presentation: KEK つくば市(招待講演)
  • Year and Date: 2008-12-10
• [Presentation] WMAP Cold Spotの起源について (2008)
  • Author(s): 井上開輝
  • Organizer: 日本天文学会
  • Place of Presentation: 岡山市、岡山理科大学
  • Year and Date: 2008-11-02
• [Presentation] WMAP Cold Spotの起源について (2008)
  • Author(s): 井上開輝
  • Organizer: 日本天文学会2008年秋季年会
  • Place of Presentation: 岡山理科大学岡山市
  • Year and Date: 2008-09-10
• [Presentation] WMAP Cold Spotの起源について (2008)
  • Organizer: 日本天文学会2008年秋季年会
  • Place of Presentation: 岡山理科大学 岡山市
  • Year and Date: 2008-09-10
• [Presentation] Harmonic Inpainting of the CMB Sky (2008)
  • Author(s): 井上開輝
  • Organizer: Cosmology with CMB\ & LSS workshops, Pune, IUCAA
  • Place of Presentation: India
  • Year and Date: 2008-08-03
• [Presentation] Harmonic Inpainting of the CMB Sky (2008)
  • Organizer: Cosmology with CMB & LSS workshops Pune
  • Place of Presentation: IUCAA, India
  • Year and Date: 2008-08-03
• [Presentation] Local Large Void as the Origin of the WMAP Cold Spot (2008)
  • Author(s): 井上開輝
  • Organizer: Cosmology with CMB & LSS workshops, Pune, IUCAA
  • Place of Presentation: India
  • Year and Date: 2008-08-02
• [Presentation] Local Large Void as the Origin of the WMAP Cold Spot (2008)
  • Organizer: Cosmology with CMB & LSS workshops Pune
  • Place of Presentation: IUCAA, India
  • Year and Date: 2008-08-02
• [Presentation] Probing CDM Substructures with Gravitationally Lensed QSOs (2008)
  • Author(s): 井上開輝
  • Organizer: 5th ALMA Meeting
  • Place of Presentation: 茨城大学水戸市
  • Year and Date: 2008-04-06