Geomagnetic effects on atmospheric Cerenkov images

被引:14
作者
Chadwick, PM [1 ]
Lyons, K [1 ]
McComb, TJL [1 ]
Orford, KJ [1 ]
Osborne, JL [1 ]
Rayner, SM [1 ]
Roberts, ID [1 ]
Shaw, SE [1 ]
Turver, KE [1 ]
机构
[1] Univ Durham, Dept Phys, Sci Labs, Durham DH1 3LE, England
关键词
D O I
10.1088/0954-3899/25/6/312
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Atmospheric Cerenkov telescopes are used to detect electromagnetic showers from primary gamma-rays of energy similar to 300 GeV up to approximate to 10 TeV and to discriminate these from cascades due to hadrons using the Cerenkov images. The geomagnetic field affects the development of showers and is shown to diffuse and distort the images. When the component of the field normal to the shower axis is sufficiently large (> 0.4 G) the performance of gamma-ray telescopes may be affected, although corrections should be possible.
引用
收藏
页码:1223 / 1233
页数:11
相关论文
共 16 条
[1]  
Allan H. R., 1970, Acta Physica Academiae Scientiarum Hungaricae, V29, P699
[2]  
ARMSTRONG P, 1999, IN PRESS EXP ASTRON
[3]   THE EFFECT OF THE GEOMAGNETIC-FIELD ON TEV GAMMA-RAY DETECTION [J].
BOWDEN, CCG ;
BRADBURY, SM ;
CHADWICK, PM ;
DICKINSON, JE ;
DIPPER, NA ;
EDWARDS, PJ ;
LINCOLN, EW ;
MCCOMB, TJL ;
ORFORD, KJ ;
RAYNER, SM ;
TURVER, KE .
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1992, 18 (02) :L55-L60
[4]   CERENKOV RADIATION FROM COMPUTER SIMULATIONS OF GAMMA-RAY-INITIATED ATMOSPHERIC SHOWERS [J].
BROWNING, R ;
TURVER, KE .
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, 1977, 38 (03) :223-238
[5]   Centaurus X-3: A source of high-energy gamma rays [J].
Chadwick, PM ;
Dickinson, MR ;
Dipper, NA ;
Kendall, TR ;
McComb, TJL ;
Orford, KJ ;
Osborne, JL ;
Rayner, SM ;
Roberts, ID ;
Shaw, SE ;
Turver, KE .
ASTROPHYSICAL JOURNAL, 1998, 503 (01) :391-395
[6]   TeV gamma rays from PSR 1706-44 [J].
Chadwick, PM ;
Dickinson, MR ;
Dipper, NA ;
Holder, J ;
Kendall, TR ;
McComb, TJL ;
Orford, KJ ;
Osborne, JL ;
Rayner, SM ;
Roberts, ID ;
Shaw, SE ;
Turver, KE .
ASTROPARTICLE PHYSICS, 1998, 9 (02) :131-136
[7]   Very high energy gamma rays from PKS 2155-304 [J].
Chadwick, PM ;
Lyons, K ;
McComb, TJL ;
Orford, KJ ;
Osborne, JL ;
Rayner, SM ;
Shaw, SE ;
Turver, KE ;
Wieczorek, GJ .
ASTROPHYSICAL JOURNAL, 1999, 513 (01) :161-167
[8]   INFLUENCE OF THE EARTHS MAGNETIC FIELD ON THE EXTENSIVE AIR SHOWERS [J].
COCCONI, G .
PHYSICAL REVIEW, 1954, 93 (03) :646-647
[9]  
EARNSHAW JR, 1971, P 12 INT C COSM RAYS, V3, P1081
[10]   gamma/hadron separation at TeV energies [J].
Fegan, DJ .
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1997, 23 (09) :1013-1060