Naoki Yoshida, Professor of the University of Tokyo
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annual winners of the JSPS Prize (25 information. Professor Abe used News researchers this time). a variant of“ analytic cohomology Professor Yoshida has developed theory,” called theory of arithmetic a computer simulation code called D-modules, to establish Langlands GADGET (GAlaxies with Dark matter type correspondence, and veried a and Gas intEracT) with collaborators. part of Deligne’s hope. His research is Using this code he has been studying difcult to understand, but you may structure formation and the evolution get some idea from his article in the of the early universe, the formation Kavli IPMU News, No. 35, pp. 4-9. of the rst stars, and the origin of massive black holes. Meeting of WPI Center Now, GADGET is a standard code Administrative Directors Held at Naoki Yoshida Awarded 13th JSPS in the eld of large-scale computer Kavli IPMU Prize and Japan Academy Medal simulation studies of the Universe. On March 8, 2017, a meeting of Naoki Yoshida, Professor of the It also has a great inuence on the WPI (World Premier International University of Tokyo School of Science astronomical observations. Thus, Research Center Initiative) center and Kavli IPMU, was awarded the Professor Yoshida’s contribution to Administrative Directors was held 13th JSPS (Japan Society for the astronomy and future prospects of his at the Kavli IPMU. In addition to the Promotion of Science) Award and research have been recognized. Administrative Director and some the 13th Japan Academy Medal administrative staff from each WPI in recognition of his“ Large-Scale Tomoyuki Abe Wins the 2017 MSJ center, WPI Program Director (PD) Numerical Simulations of Structure Spring Prize Toshio Kuroki, Deputy PD Akira Formation in the Early Universe.” The Kavli IPMU Associate Ukawa, Director Takuya Saito of award ceremony was held at The Professor Tomoyuki Abe the Ofce for the Promotion of Japan Academy on February 8, 2017. won the Mathematical Basic Research, the Basic Research Society of Japan (MSJ) Promotion Division, Research Spring Prize for his Promotion Bureau, Ministry of contributions to the Tomoyuki Abe Education, Culture, Sports, Science “Study of Arithmetic and Technology (MEXT), and some D-module Theory and Langlands ofcers from MEXT and JSPS (Japan Correspondence.” An award Society for the Promotion of Science) ceremony was held on March 25 WPI Secretariat also attended the during the MSJ’s Annual Meeting at meeting. Tokyo Metropolitan University. To begin, meeting host and Naoki Yoshida with his Japan Academy Medal. The MSJ Spring Prize was Kavli IPMU Administrative Director Photo: Courtesy of the Joint Institute for Computational Fundamental Science. inaugurated in 1988 as the successor Haruyama reported on the necessity to the Iyanaga Prize which had been for the WPI program, 10 years after The JSPS Prize and Japan Academy established in 1973. It is awarded to its launch, to deepen cooperation Medal were both established in MSJ members under the age of 40 to among the centers. Then, PD Kuroki, 2004. The JSPS Prize is meant to recognize outstanding mathematical MEXT Director Saito, and others recognize young researchers with achievement. explained the present status toward fresh ideas who have the potential to There are mainly two cohomology establishing the“ WPI Academy.” become world leaders in their elds. theories for varieties over elds According to these explanations, The purpose of the Japan Academy of positive characteristic: one the WPI centers, which started in Medal is to honor outstanding with a topological nature and the 2007 as rst-generation centers, can young researchers, and up to six other with a more analytic nature. maintain and develop their status awardees (6 researchers this time) are Deligne conjectured that these two of“ World Premier International selected every year from among the cohomology theories have similar Research Center,” attained through 18 Kavli IPMU News No. 37 March 2017 their ten years of activities, in the new paper reporting this research, got By precisely observing and analyzing framework of the WPI Academy. As their rst look at the exact place the images of more distant galaxies the Kavli IPMU is a WPI center with a where stars were born at a peak where star formation was occurring ve-year extension, it is expected to rate of star formation. To do so, they using both radio waves and millimeter play its role in the WPI Academy as used the National Radio Astronomy waves in future research like the well as in the current WPI program. Observatory’s Karl G. Jansky Very present one, it is expected that we Further, there was a presentation of Large Array (VLA) in New Mexico can investigate what mechanisms information by a fundraising specialist. and the Atacama Large Millimeter/ were responsible for the bulk of star He pointed out the necessity of an Submillimeter Array (ALMA) in Chile formation in those galaxies at that approach toward various kinds of to look at eleven distant galaxies time, and how they are different from fundraising, sufcient appeal power selected from the Hubble Ultra-Deep the star-formation mechanisms in the WPI activities have, etc. Field. They are seen as they were 8.9 – present-day galaxies, and eventually, The participants toured the Kavli 11.5 billion years ago. we can shed light on the history of IPMU building which is known for Most stars in the present Universe galaxy evolution. its unique design, and attended are thought to have been born then. These results were published in the daily tea time which is aimed at However, galaxies forming stars December 1 issue of the Astrophysical cross-disciplinary communication of prolically are shrouded in a great Journal. researchers. deal of dust due to star formation Finally, there was a discussion activity. This makes it difcult to look Distant Star-Forming Galaxies regarding problems that are common at the birthplace of stars because in the Hubble Ultra-Deep Field to each center. The participants intervening dust hides it from visible- recognized the importance of the light observations. However, radio Administrative Directors meeting waves, having longer wave lengths like the one held this time, and than visible light, can get through agreed upon a policy of gathering the dust. Therefore, the astronomers 11.2 billion light-years 9.0 billion light-years periodically as often as possible for made the most sensitive image of the purpose of building up WPI’s bank such distant galaxies where star of information that can be shared formation was occurring with the among the centers. VLA, and observed the distribution of cold gas (which is the fuel for star 9.4 billion light-years 10.9 billion light-years formation) with the ALMA using radio Color composite: Hubble Space Telescope (visible wavelength) Red overlay: Karl G. Jansky Very Large Array (radio wavelength) waves in the millimeter wavelength Radio/Optical combination images of distant galaxies as seen with VLA and Hubble Space Telescope. Their region (called millimeter waves), as distances from Earth are indicated in the images. Credit: seen in the two gures shown on the K. Trisupatsilp, NRAO/AUI/NSF, NASA. right. The new observations, using the Karl G. Jansky Very Large Array 5 centimeter VLA and ALMA, have shown that Ongoing star formation A scene from the WPI Administrative Directors meeting. Atacama Large Millimeter/submillimeter Array intense star formation in the galaxies 1.3 millimeter Cold gas fueling star formation they studied most frequently occurred Hubble Space Telescope Visible Light Old stars, existing galaxy structures VLA and ALMA Team up to Give throughout the galaxies, as opposed First Look at Birthplaces of Most to much smaller regions in present- Current Stars day galaxies with similar high star- An international team of formation rates. The star formation astronomers, including Kavli rate (the total mass of stars formed IPMU postdoctral fellow Wiphu per year) in the galaxies they studied The combination of VLA, ALMA, and Hubble Space Rujopakarn (who is also afliated turned out to be 20 times as large Telescope provides simultaneous insights into star formation, cold dust, and the existing stellar populations with Chulalongkorn University in as that in the present-day average in distant galaxies in the Hubble Ultra Deep Field. Credit: Wiphu Rujopakarn/Kavli IPMU. News Bangkok) as the rst author of the galaxies. 19 First Public Data Released by Why was it possible for the HSC- of“ A Question of Origins,” which is Hyper Suprime-Cam Subaru SSP survey to collect such a large fundamental to mankind. The venue Strategic Program amount of data within this short was lled to capacity with 350 people. The rst public data set from the period? It is because the HSC-SSP After an opening address by WPI Hyper Suprime-Cam Subaru Strategic is a large survey project which fully Program Director Toshio Kuroki, Kavli Program (HSC-SSP) was released takes advantage of the performance IPMU Principal Investigator Hirosi on February 27, 2017 (local time in of the Subaru telescope and the Ooguri talked about“ The Origin of Hawaii). The HSC-SSP is a large survey HSC. First, the Subaru telescope has a the Universe from the Physics Point of being done using HSC, an optical large 8.2 m diameter primary mirror, View,” ELSI Director Kei Hirose talked imaging camera mounted at the and, therefore, a high light-collecting about“ Learning the Past from the prime focus of the Subaru Telescope. power. Further, the HSC, a wide-eld Present―Travelling through Time over Since it is difcult to analyze such a camera mounted at the prime focus 4.5 Billion Years―,” and the University huge dataset with standard tools, a of the Subaru telescope, has 104 of Tokyo’s Graduate School of the dedicated database and interface for CCDs (870 million pixels in total) for Humanities and Sociology Professor ease of access and use of the data science exposures and a 1.77 square- Noburu Notomi spoke about has been developed.