logo

korean english

게시판

Home > 게시판 > 세미나

중성미자 천체입자물리연구실에서 Weizmann Institute Kenny Ng교수님을 초청하여 아래와 같이 세미나를 개최합니다.

학과 구성원 여러분의 많은 참석을 부탁드립니다.



 

○ 일시: 2018 11 6(화) 오후 3:00 ~

○ 장소: Seminar room - 7th Floor Samsung library

○ 연사: Prof. Kenny Ng (Weizmann Institute)

Title:  The Surprising Solar Gamma-ray Emission from Cosmic-Ray Interactions

 

Abstract:  I will discuss recent results on gamma-ray observations of the Sun with Fermi, which revealed many interesting and surprising features. These gamma rays are expected to be produced by hadronic interactions between cosmic rays and the solar atmosphere. The high flux of gamma rays observed from the Sun requires a large boost of gamma-ray production by some mechanism, which is likely related to solar magnetic fields. Our new results include the first resolved image of the Sun and a mysterious dip in the spectrum between 30-50 GeV. In particular, we also find that the solar gamma-ray spectrum during solar minimum is hard (~E−2.1) and reaches at least 200 GeV. This suggests that ground based experiments like HAWC and LHAASO will be important for probing the Sun at TeV regime. Understanding solar gamma rays is crucial for predicting the solar atmospheric neutrino flux, which can realistically be detected by IceCube/KM3NeT, and is important for solar dark matter searches.

번호 제목 날짜 조회 수
공지 2022학년도 1학기 콜로퀴움 일정 2022.01.10 27351
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 970649
580 <Mar.20(Wed.)> Connecting Thermoelectricity and Superconductivity by Pressure Bridge 2019.03.13 49648
579 <Mar.13(Wed.)> Physics in Medicine: Magnetic Resonance Imaging 2019.03.07 56887
578 <3/11(Mon) 10:30 am ~ >Probing Dark Matter at LIGO and Beyond 2019.03.04 54782
577 <2/8(Fri) 11:0 am ~ >Intertwined states in the pure and Nd-doped heavy fermion superconductor CeCoIn5 2019.02.08 61046
576 <2/8(Fri) 2:00pm ~ > 5d SCFTs and Type IIB 5-brane webs 2019.02.01 47937
575 <1/16(Wed) 4:00pm> Band Representation Analysis of Intersecting Nodal Rings in Semiconducting Layers 2019.01.09 48890
574 2019학년도 1학기 콜로퀴움 일정 2019.01.08 120377
573 <12/21(Fri) 3:00pm ~ > Quasilocal Smarr Relations / Expanding Universe and Dynamical Compactification Using Yang-Mills Instantons 2018.12.17 74696
572 <12/20(Thu) 2:00pm> Gravitating Spinning Stars (a particle theorist's perspective) 2018.12.17 68880
571 <Dec.12(Wed.)> First-principles studies of complex oxides interfaces 2018.12.05 59420
570 <Dec.5(Wed.)> 두 펄사 이야기 2018.11.28 49707
569 <11/21(Wed.) 2:00pm>Origin of Hawking Radiation 2018.11.20 47381
568 <11/23(Fri.) 11:00am>Barrier-bound States in Flat-band Systems 2018.11.19 48102
567 <Nov.21(Wed.) 4:30 PM> 핵물리학과 RAON 2018.11.15 43609
566 <11/13(Tue.) 11:00am>Hund’s coupling driven role of $d_{3z^2-r^2}$ in stabilizing the hole-doped antiferromagnetic state in cuprates 2018.11.09 68754
565 <Nov.14(Wed.) 4:30 PM> Status and Prospects for the IceCube Neutrino Observatory 2018.11.07 55278
564 <11/9(Fri.) 11:00am>Geometrically frustrated magnetism on triangular lattice 2018.11.05 86529
563 <11/12(Mon.) 3:30pm>Dark Matter Probes with Astrophysical Observations 2018.11.05 46581
» <11/6(Tue.) 3:00pm>The Surprising Solar Gamma-ray Emission from Cosmic-Ray Interactions 2018.11.03 46047
561 <Nov.7(Wed.) 4:30 PM> Hidden-in-bulk Phase Transitions in Artificial Quantum Materials 2018.10.31 72112