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SEARCH FOR EMISSION OF ULTRA HIGH-ENERGY RADIATION FROM ACTIVE GALACTIC NUCLEI

被引：17
作者：
ALEXANDREAS, DE
ALLEN, GE
BERLEY, D
BILLER, S
BURMAN, RL
CAVALLISFORZA, M
CHANG, CY
CHEN, ML
CHUMNEY, P
COYNE, D
DION, C
DION, GM
DORFAN, D
ELLSWORTH, RW
GOODMAN, JA
HAINES, TJ
HOFFMAN, CM
KELLEY, L
KLEIN, S
NAGLE, DE
SCHALLER, SC
SCHNEE, R
SHOUP, A
SINNIS, C
STARK, MJ
WEEKS, DD
WILLIAMS, DA
WU, JP
YANG, T
YODH, GB
ZHANG, W
机构：
[1] UNIV CALIF IRVINE,IRVINE,CA 92717
[2] UNIV MARYLAND,COLL PK,MD 20742
[3] NATL SCI FDN,WASHINGTON,DC 20550
[4] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544
[5] UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064
[6] GEORGE MASON UNIV,FAIRFAX,VA 22030
[7] UNIV CALIF RIVERSIDE,RIVERSIDE,CA 92521
来源：
ASTROPHYSICAL JOURNAL | 1993年 / 418卷 / 02期
关键词：
BL LACERTAE OBJECTS; GENERAL; GALAXIES; ACTIVE; GAMMA RAYS; OBSERVATIONS;
D O I：
10.1086/173439
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The CYGNUS air-shower array has been used to search for emission of ultra-high-energy gamma radiation from 13 active galactic nuclei (AGNs) that were detected by EGRET. The data set spans the period 1986 April 2 to 1993 January 1. The data set has been searched for continuous emission, for emission on the time scale of 1 week, and for emission on the time scale of 1 day. No evidence for emission from any of the AGNs on any of the time scales examined was found. The 90% Confidence Level (CL) upper limit to the continuous flux from Mrk 421 above 50 TeV is 7.5 x 10(-14) CM-2 S-1.
引用
收藏
页码：832 / 835
页数：4
相关论文
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