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SEARCH FOR 10 TEV GAMMA-RAY EMISSION FROM ACTIVE GALACTIC NUCLEI WITH THE TIBET AIR SHOWER ARRAY
被引:7
|作者:
AMENOMORI, M
CAO, Z
DAI, BZ
DING, LK
FENG, YX
FENG, ZY
HIBINO, K
HOTTA, N
HUANG, Q
HUO, AX
JIA, HY
JIANG, GZ
JIAO, SQ
KAJINO, F
KASAHARA, K
LABACIREN
LIU, SM
MEI, DM
MENG, L
MENG, XR
MIMACIREN
MIZUTANI, K
MU, J
NANJO, H
NISHIZAWA, M
OGURO, A
OHNISHI, M
OHTA, I
OUCHI, T
REN, JR
SAITO, T
SAKATA, M
SHI, ZZ
SHIBATA, M
SHIRAI, T
SUGIMOTO, H
SUN, XX
TAIRA, K
TAN, YH
TATEYAMA, N
TORII, S
WANG, H
WEN, CZ
YAMAMOTO, Y
YU, GC
YUAN, P
YUDA, T
ZHANG, CS
ZHANG, HM
ZHANG, L
机构:
[1] UNIV TOKYO,INST COSM RAY RES,TANASHI,TOKYO 188,JAPAN
[2] TOKYO METROPOLITAN COLL AERONAUT ENGN,TOKYO 116,JAPAN
[3] YOKOHAMA NATL UNIV,FAC EDUC,YOKOHAMA,KANAGAWA 240,JAPAN
[4] SHONAN INST TECHNOL,FIJISAWA 251,JAPAN
[5] KANAGAWA UNIV,FAC ENGN,YOKOHAMA 221,JAPAN
[6] KONAN UNIV,DEPT PHYS,KOBE 658,JAPAN
[7] TIBET UNIV,DEPT MATH & PHYS,LHASA 850000,PEOPLES R CHINA
[8] ACAD SINICA,INST HIGH ENERGY PHYS,BEIJING 100034,PEOPLES R CHINA
[9] YUNNAN UNIV,DEPT PHYS,KUNMING 650091,PEOPLES R CHINA
[10] SW JIAOTONG UNIV,DEPT PHYS,CHENGDU 610031,PEOPLES R CHINA
[11] UTSUNOMIYA UNIV,DEPT EDUC,UTSUNOMIYA,TOCHIGI 321,JAPAN
[12] SAITAMA UNIV,DEPT PHYS,URAWA,SAITAMA 338,JAPAN
关键词:
COSMIC RAYS;
GALAXIES;
ACTIVE;
NUCLEI;
GAMMA-RAYS;
OBSERVATIONS;
QUASARS;
INDIVIDUAL;
(MARKARIAN;
421);
D O I:
10.1086/174350
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
A search for 10 TeV gamma-ray emission from 15 active galactic nuclei (AGNs) which were detected by EGRET was made with the Tibet air shower array installed at an elevation of 4300 m above sea level. The data set, taken in the period from 1990 June 18 through 1992 September 29 has been used to search for continuous emission as well as emission on the timescale of 1 day. No evidence for emission from any of the AGNs on any of the time scales examined was found. The 95% confidence level upper limit to the continuous flux is presented on each source, and in particular the result for Markarian 421 is compared with other experiments. Further observation of gamma-rays at energies around 10 TeV from nearby AGNs will provide reliable information on the strength of the intergalactic background photon field.
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页码:634 / 637
页数:4
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