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 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1079272
296 <July 8(Fri.)>Intertwined magnetism and charge density wave in a kagome metal 2022.06.03 1488
295 <May. 10(Tue.)>Longitudinal magnon decay in the quasi-two-dimensional antiferromagnet in Ba2FeSi2O7 2022.05.09 1944
294 <May. 3(Tue.)>Anomalous Hall signatures of nonsymmorphic nodal lines in the doped chromium chalcospinel CuCr2Se4 2022.04.19 1993
293 <Jan. 27(Thu.)>Emulating twisted double bilayer graphene with a multiorbital optical lattice 2022.01.18 2916
292 <Nov. 29(Mon.)>Exploring light-matter interactions at atomic scale using electron microscopy 2021.11.22 8222
291 <July 21(Wed.)> Strongly Correlative Ionics 2021.07.19 29764
290 <June 23(Wed.)>Valley Polarization and Exciton Hall Effect in Transition Metal Dichalcogenides 2021.06.22 31367
289 <Aug. 6(Fru.)> Gravitationally probing dark matter (DM) microphysics 2021.08.03 31495
288 <8/1(Sat.)> Recent Advances in Deep Learning 2020.07.29 35101
287 <July 14(Wed.)> B1g phonon anomaly driven by Fermi surface instability at intermediate temperature in YBa2Cu3O7−δ 2021.07.13 43166
286 <June 01(Tue.)>Frustration-induced Athermal Behaviors: Hilbert Space Fragmentation and Quantum Many-Body Scars 2021.05.24 43537
285 [8/1(Wed.), 8/2(Thu)] Lectures on gravitational waves 2018.07.24 45034
284 <Nov. 5(Fri.)>Strongly Coupled Moire Photonics 2021.11.01 45748
283 <4/5(Wed.) 18:00pm> 저에너지 가속기의 활용 2017.04.05 49629
» <11/6(Tue.) 3:00pm>The Surprising Solar Gamma-ray Emission from Cosmic-Ray Interactions 2018.11.03 49671
281 <9/24(Tue) 4:00 pm ~ > Structure Formation with Two Periods of Inflation: Beyond plain LCDM 2019.09.17 50359
280 <7/11(Wed.) 3:00pm> Traversable wormholes: two-dimensional example 2018.07.09 53430
279 <April 25(Mon) 16:30> Neutron Recoil Polarization in Low‐energy Photodisintegration of the Deuteron 2016.04.25 53735
278 <6/21(Thu.) ~ 22(Fri.)>Mini-workshop for the entanglement entropy at SKKU 2018.06.18 53964
277 <11/23(Fri.) 11:00am>Barrier-bound States in Flat-band Systems 2018.11.19 54510