オンラインカジノファン｜オンラインカジノを賢く遊ぶための ...

This site uses Google Analytics to monitor site usage.Google Analytics uses COOKIEs to collect user information. View our COOKIE policy. Do not acceptAcceptGo To ContentHomeNewsEventsThemesAccessDonateJASearch MenuHomeHomeWho we areWho we areAbout usAbout usAbout usAcademic CalendarMessage from the PresidentQuestionnaireSite PolicyOfficial social media accountsThe UniversityFacts and FiguresVisionVisionVisionOur visionResearch: Working with society, for societyEducation: Thinking globallyInternational: Hub campusLocal Partnerships: Training for the futurePartner UniversitiesInternational OfficesInitiatives for SDGsThe Kobe University FundOur HistoryOur HistoryOur HistoryOur HistoryThe Kobe University FundThe Kobe University FundThe Kobe University FundThe Kobe University FundOrganization and University AdministrationOrganization and University AdministrationOrganization and University AdministrationExecutive membersContactKobe University DirectoryRules and RegulationsChartersChartersChartersCharter on EducationCharter on EnvironmentCharter on ResearchPublic RelationsPublic RelationsPublic RelationsPublic RelationsPublications - Back numbersPress Release ProcedureInformation DisclosureInformation DisclosureInformation DisclosureInternational ProgramsDistinctive Education and Research ProgramsCertified Evaluation and AccreditationLong-term Plan and Evaluation of the UniversityMission and GoalAcademic OrganizationTeaching StaffStudentsCurriculum, Standard for Grading System, Criteria for Graduation Completion of CourseEducation and Research Environments for StudentsTuition and FeesStudent SupportInternational ActivitiesStudying in JapanFor International StudentsUniversity Information and DisclosureCampusCampusCampusCampusStudy in KobeStudy in KobeAdmissionsAdmissionsAdmissionsAbout admissionsAdmission Policy of Kobe UniversityUndergraduate AdmissionsGraduate School Admissions - Master's programmesGraduate School Admissions - Doctoral programmesResearch StudentsExchange programsCourses in EnglishCourses in EnglishCourses in EnglishEnglish-Based Master's Program (MA, Graduate School of Science)ICHS Course (MA, PhD, Graduate School of Health Sciences)International Program for Medical Research (PhD, Graduate School of Medicine)Kobe Global Graduate Program for Agricultural Science (MA, PhD, Graduate School of Agricultural Science)Kobe University Interdisciplinary Master Program (KIMAP)SESAMI PhD Program (PhD, Graduate School of Business Administration)Special Course on Development Policy (MA, Graduate School of International Cooperation)CoursesCoursesCoursesAgricultural Engineering and Socio-Economics (Bachelor)Agricultural Engineering and Socio-Economics (Doctoral)Agricultural Engineering and Socio-Economics (Master)Agrobioscience (Bachelor)Agrobioscience (Doctoral)Agrobioscience (Master)Architecture (Bachelor)Architecture (Doctoral)Architecture (Master)Biology (Bachelor)Biology (Doctoral)Biology (Master)Biomedical Sciences (Master)Bioresource Science (Bachelor)Bioresource Science (Doctoral)Bioresource Science (Master)Business Administration (Bachelor)Business Administration (Doctoral)Business Administration (Master)Chemical Science and Engineering (Bachelor)Chemical Science and Engineering (Doctoral)Chemical Science and Engineering (Master)Chemistry (Bachelor)Chemistry (Doctoral)Chemistry (Master)Child Education (Bachelor)Computational Science (Doctoral)Computational Science (Master)Cultural Interaction (Doctoral)Cultural Interaction (Master)Culture and Globalization (Doctoral)Culture and Globalization (Master)Development and Economics Program (Doctoral)Development and Economics Program (Master)Economics (Bachelor)Economics (Doctoral)Economics (Master)Engineering, Civil (Bachelor)Engineering, Civil (Doctoral)Engineering, Civil (Master)Engineering, Computer and Systems (Bachelor)Engineering, Electrical and Electronic (Bachelor)Engineering, Electrical and Electronic (Doctoral)Engineering, Electrical and Electronic (Master)Engineering, Mechanical (Bacheloar)Engineering, Mechanical (Doctoral)Engineering, Mechanical (Master)Environment and Sustainability (Bachelor)Global Cultures (Bachelor)Global Transportation Sciences (Bachelor)Health Sciences (Bachelor)Health Sciences (Doctoral)Health Sciences (Master)Human Cultural Studies (Doctoral)Human Cultural Studies (Master)Human Development and Community (Bachelor)Human Development (Doctoral)Human Development (Master)Human Environmental Science (Doctoral)Human Environmental Science (Master)Human Social Dynamics (Doctoral)Human Social Dynamics (Master)Humanities (Bachelor)Information Science (Doctoral)Information Science (Master)International Law/Law and Development Program (Doctoral)International Law/Law and Development Program (Master)International Studies Program (Doctoral)International Studies Program (Master)Kobe University Interdisciplinary Master Program (KIMAP)Law (Bachelor)Law and Politics (Law - Master)Law and Politics (Law - Doctoral)Law and Politics (Political Science - Doctoral)Law and Politics (Political Science - Master)Marine Engineering (Bachelor)Maritime Sciences (Doctoral)Maritime Sciences (Master)Mathematics (Bachelor)Mathematics (Doctoral)Mathematics (Master)Medical Sciences (Doctoral)Medicine (Bachelor)Ocean Safety Systems Science (Bachelor)Physics (Bachelor)Physics (Doctoral)Physics (Master)Planetology (Bachelor)Planetology (Doctoral)Planetology (Master)Political Science and Area Studies Program (Doctoral)Political Science and Area Studies Program (Master)Science, Technology and Innovation (Doctoral)Science, Technology and Innovation (Master)Systems Science (Doctoral)Systems Science (Master)Short Term ProgramsShort Term ProgramsShort Term ProgramsShort Term ProgramsAcademic PolicyAcademic PolicyAcademic PolicyDiploma PolicyCurriculum PolicyStudy in JapanStudy in JapanStudy in JapanStudy in JapanProcedures for Entering JapanChange of Status of ResidenceExtension of Period of StayImmigration and Residence Procedures upon Arrival in JapanInviting Family Members to Japan and Necessary Procedures after their ArrivalLeaving Japan temporarily and Re-entryOrientation for New International StudentsWork Permit for Part-time JobsProcedure for Staying in JapanResidence Card ReissuanceInformation to report to the Immigration BureauResidence CardTemporary Withdrawal from UniversityCampus LifeCampus LifeAbout Kobe and HyogoAbout Kobe and HyogoAbout Kobe and HyogoAbout Hyogo PrefectureAbout Kobe CityTop 5 Must-see Attractions in KobeCampus GuideCampus GuideCampus GuideKobe University CafeteriasRegistered Tangible Cultural Properties in Kobe UniversityFacilities for Fitness and Extracurricular ActivitiesKobe University Medical Center for Student HealthInformation Science and Technology CenterKobe University Learning CommonsLearning Facilities and Relaxing EnvironmentsKobe University LibrariesStudent LifeStudent LifeStudent LifeClubs and Circles in Kobe UniversityDaily lifeStudent voicesAcademic CalendarAcademic CalendarAcademic CalendarAcademic CalendarTuition and FeesTuition and FeesTuition and FeesAbout TuitionAbout Enrollment Fee Exemption and DeferralAbout Tuition Fee ExemptionEnrollment Fee Exemption and Deferral Tuition Fee ExemptionStudent SupportStudent SupportStudent SupportStudent SupportHousing InformationHousing InformationHousing InformationHousing InformationKobe University Residential FacilitiesPrivate Dormitories and ResidencesRental Guarantor System at Kobe UniversityWhen moving outPrivate HousingScholarshipsScholarshipsScholarshipsScholarshipsPre-enrollment ScholarshipsCareersCareersCareersCareersInternshipsKobe University Tokyo Office - Career Centre, Tokyo BranchAlumniAlumniAlumniOverseas Alumni AssociationsKobe University Homecoming DayKobe University Community Network "KU-Net"Notice regarding the issuing of various certificates for graduatesResearch andCorporate RelationsResearch andCorporate RelationsResearch SupportResearch SupportResearch SupportResearch SupportAccommodationGrant Application Support in EnglishHandbook for international researchersSupport schemeCode of Conduct for ScientistsFunded Research ProgramsFunded Research ProgramsFunded Research ProgramsFunded Research ProgramsGrants-in-Aid for Scientific ResearchKobe University Strategic International Collaborative Research GrantDevelopment of a global-standard, minimally invasive, functional brain network mapping technique for brain surgeryEstablishing an Asian Network to develop a novel treatment for prostate cancerInternational consortium on ‘Mie-tronics’: a new emerging field of nanophotonicsInternational agricultural research platform for sustainable food productionIlluminating how huge earthquakes occur in Japan, Mexico and ChileCreating an international innovation hub for engineering biologyInternational membrane consortium on research and education strives for sustainable and carbon-neutral societiesInstitute of Promoting Academic Research ProgramsInstitute of Promoting Academic Research ProgramsInstitute of Promoting Academic Research ProgramsInstitute of Promoting Academic Research ProgramsOffice of Research ManagementOrganization for Advanced and Integrated ResearchResearch Facility Center for Science and TechnologyCollaborationCollaborationCollaborationCollaborationEnterprise Partnerships DivisionOffice of Promoting Regional PartnershipFaculties and SchoolsFaculties and SchoolsNewsNewsCategoryFeaturesInterviewsProjectsSpecial issuesPress releasesSDGsGoal 1: No povertyGoal 2: Zero hungerGoal 3: Good health and well-beingGoal 4: Quality educationGoal 5: Gender equalityGoal 6: Clean water and sanitationGoal 7: Affordable and clean energyGoal 8: Decent work and economic growthGoal 9: Industry, Innovation and InfrastructureGoal 10: Reduced inequalityGoal 11: Sustainable cities and communitiesGoal 12: Responsible consumption and productionGoal 13: Climate actionGoal 14: Life below waterGoal 15: Life on landGoal 16: Peace, justice and strong institutionsGoal 17: Partnership for the goalsAreasSocial sciencesMathematics and physicsChemistryEngineering sciencesInformaticsBiological sciencesAgriculture and EnvironmentMedicine, dentistry and pharmacologyHumanitiesEventsEventsEvent categoriesTalksOpen lecturesUniversity activitiesEvent areasSocial sciencesEvent locationsRokkodai 1st CampusOff-campusOnlineEvent audiencesStudentsAudienceProspective studentsCurrent studentsAlumsCorporate and societyFaculty and staff CloseNews TopCategoriesPress releasesRead in日本語2016.09.16Origin of minor planets’ rings revealed Mathematics and physicsAstrophysicsEarth and planetary scienceSolar systemAsteroidsSimulationsA team of researchers has clarified the origin of the rings recently discovered around two minor planets known as centaurs, and their results suggest the existence of rings around other centaurs. These findings were published on August 29 in Astrophysical Journal Letters, and introduced in AAS Nova, a website for research highlights from the journals of the American Astronomical Society.The lead author of the paper is HYODO Ryuki (Kobe University Department of Planetology, Graduate School of Science), and co-authors are Professor Sébastien Charnoz (Institute de Physique du Globe/Université Paris Diderot), Project Associate Professor GENDA Hidenori (Earth-Life Science Institute, Tokyo Institute of Technology), and Professor OHTSUKI Keiji (Kobe University Department of Planetology, Graduate School of Science).Centaurs are minor planets that orbit between Jupiter and Neptune, their current or past orbits crossing those of the giant planets. It is estimated that there are around 44,000 centaurs with diameters larger than one kilometer.Until recently it was thought that the four giants such as Saturn and Jupiter were the only ringed celestial bodies within our solar system. However, in 2014 observations of stellar occultation (an event that occurs when light from a star is blocked from the observer by a celestial body) by multiple telescopes revealed that rings exist around the centaur Chariklo (see Figure 1). Soon after this, scientists discovered that rings likely exist around another centaur, Chiron, but the origin of the rings around these minor planets remained a mystery.The team began by estimating the probability that these centaurs passed close enough to the giant planets to be destroyed by their tidal pull. Their results showed that approximately 10% of centaurs would experience that level of close encounter. Next, they used computer simulations to investigate the disruption caused by tidal pull when the centaurs passed close by the giant planets. The outcome of such encounters was found to vary depending on parameters such as the initial spin of the passing centaur, the size of its core, and the distance of its closest approach to a giant planet (Figure 2). They found that if the passing centaur is differentiated and has a silicate core covered by an icy mantle, fragments of the partially-destroyed centaur will often spread out around the largest remnant body in a disc shape, from which rings are expected to form.The results of their simulations suggest that the existence of rings around centaurs would be much more common than previously thought. It is highly likely that other centaurs with rings and/or small moons exist, awaiting discovery by future observations.Figure 1:(left) Visualization of Chariklo and its rings, provided by the European Southern Observatory (http://www.eso.org/public/images/eso1410b/). Credit: ESO/L. Calçada/M. Kornmesser/Nick Risinger (skysurvey.org).(right) Visualization of the rings as seen from Chariklo’s surface, provided by the European Southern Observatory (https://www.eso.org/public/images/eso1410a/). Credit: ESO/L. Calçada/Nick Risinger (skysurvey.org).Figure 2: Examples of snapshots of simulations with different initial conditionsThe center of each panel shows a centaur after being partially destroyed, and the fragments around it distributed in a disc shape, from which observed rings are expected to form (from Hyodo et al. 2016, Astrophysical Journal Letter 828, L8)Technical terms1. Centaursmall celestial bodies that orbit between Jupiter and Neptune. Their current or past orbits repeatedly cross those of the giant planets, and sometimes pass very close by the giant planets themselves.2. Charikloa centaur with a radius of approximately 250 kilometres. In 2014 it was clarified by stellar occultations that this centaur has rings.3. Chirona centaur with a radius of approximately 220 kilometres. Like Chariklo, it is thought to possess rings based on data from multiple observations.Journal informationTitle“ Formation of Centaurs' Rings through Their Partial Tidal Disruption during Planetary Encounters ”DOI10.3847/2041-8205/828/1/L8AuthorsRyuki Hyodo, Sébastien Charnoz, Hidenori Genda, Keiji OhtsukiJournalAstrophysical Journal LettersRelated linksArticle on the Nova website of the American Astronomical SocietyEarth-Life Science Institute of Tokyo Institute of TechnologyResearchersOhtsuki KeijiProfessorGraduate School of ScienceGraduate School of ScienceSHAREMore from these researchersPress releases2020.08.07Mathematics and physicsHuge ring-like structure on the surface of Jupiter’s moon Ganymede may have been caused by a violent impactPress releases2016.10.31Mathematics and physicsMystery solved behind birth of Saturn’s ringsPress releases2015.08.19Mathematics and physicsOrigin of Saturn's F Ring and Its Shepherd Satellites RevealedMore about these topicsPress releases2021.06.02Mathematics and physicsDid heat from impacts on asteroids provide the ingredients for life on Earth?Press releases2020.03.25Mathematics and physicsCreating a crater to constrain the age of an asteroid's surfacePress releases2019.01.09Mathematics and physicsGiant pattern discovered in the clouds of planet VenusPress releases2019.11.27Mathematics and physicsImpact crater data analysis of Ryugu asteroid illuminates complicated geological historyページの先頭へ1-1, Rokkodai-cho, Nada-ku, Kobe, 657-8501, JAPANProspective studentsCurrent studentsAlumsCorporate and societyFaculty and staffContactAccessJobsOfficial social media accountsCampus calendarPrivacy policySite policySite map© Kobe University