共 20 条
[1]
ALEXANDREAS DE, 1991, APJ, V383, P653
[2]
SEARCH FOR STEADY EMISSION OF 10-TEV GAMMA-RAYS FROM THE CRAB-NEBULA, CYGNUS-X-3, AND HERCULES-X-1 USING THE TIBET AIR SHOWER ARRAY
[J].
AMENOMORI, M
;
CAO, Z
;
DING, LK
;
FENG, ZY
;
HIBINO, K
;
HOTTA, N
;
HUANG, Q
;
HUO, AX
;
JIA, HY
;
JIANG, GZ
;
JIAO, SQ
;
KAJINO, F
;
KASAHARA, K
;
LABACIREN
;
MEI, DM
;
MENG, L
;
MENG, XR
;
MIMACIREN
;
MIZUTANI, K
;
MU, J
;
NANJO, H
;
NISHIZAWA, M
;
NUSANG
;
OGURO, A
;
OHNISHI, M
;
OHTA, I
;
REN, JR
;
SAITO, T
;
SAKATA, M
;
SHI, ZZ
;
SHIBATA, M
;
SHIRAI, T
;
SUGIMOTO, H
;
SUN, XX
;
TAI, A
;
TAIRA, K
;
TAN, YH
;
TATEYAMA, N
;
TORII, S
;
WANG, H
;
WEN, CZ
;
YAMAMOTO, Y
;
YAO, XY
;
YU, GC
;
YUAN, P
;
YUDA, T
;
ZENG, JG
;
ZHANG, CS
;
ZHANG, HM
;
ZHANG, L
.
PHYSICAL REVIEW LETTERS,
1992, 69 (17)
:2468-2471

AMENOMORI, M
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

CAO, Z
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

DING, LK
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

FENG, ZY
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

HIBINO, K
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

HOTTA, N
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

HUANG, Q
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

HUO, AX
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

JIA, HY
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

JIANG, GZ
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

JIAO, SQ
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

KAJINO, F
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

KASAHARA, K
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

LABACIREN
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

MEI, DM
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

MENG, L
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

MENG, XR
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

MIMACIREN
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

MIZUTANI, K
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

MU, J
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

NANJO, H
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

NISHIZAWA, M
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

NUSANG
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

OGURO, A
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

OHNISHI, M
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

OHTA, I
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

REN, JR
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

SAITO, T
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

SAKATA, M
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

SHI, ZZ
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

SHIBATA, M
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

SHIRAI, T
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

SUGIMOTO, H
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

SUN, XX
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

TAI, A
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

TAIRA, K
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

TAN, YH
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

TATEYAMA, N
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

TORII, S
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

WANG, H
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

WEN, CZ
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

YAMAMOTO, Y
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

YAO, XY
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

YU, GC
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

YUAN, P
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

YUDA, T
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

ZENG, JG
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

ZHANG, CS
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

ZHANG, HM
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

ZHANG, L
论文数: 0 引用数: 0
h-index: 0
机构: CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA
[3]
BAILLON P, 1993, 23RD P ICRC CALG CAN, V1, P271
[4]
PULSED HIGH-ENERGY GAMMA-RADIATION FROM GEMINGA (1E0630+178)
[J].
BERTSCH, DL
;
BRAZIER, KTS
;
FICHTEL, CE
;
HARTMAN, RC
;
HUNTER, SD
;
KANBACH, G
;
KNIFFEN, DA
;
KWOK, PW
;
LIN, YC
;
MATTOX, JR
;
MAYERHASSELWANDER, HA
;
VONMONTIGNY, C
;
MICHELSON, PF
;
NOLAN, PL
;
PINKAU, K
;
ROTHERMEL, H
;
SCHNEID, EJ
;
SOMMER, M
;
SREEKUMAR, P
;
THOMPSON, DJ
.
NATURE,
1992, 357 (6376)
:306-307

BERTSCH, DL
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

BRAZIER, KTS
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

FICHTEL, CE
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

HARTMAN, RC
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

HUNTER, SD
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

KANBACH, G
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

KNIFFEN, DA
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

KWOK, PW
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

LIN, YC
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

MATTOX, JR
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

MAYERHASSELWANDER, HA
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

VONMONTIGNY, C
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

MICHELSON, PF
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

NOLAN, PL
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

PINKAU, K
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

ROTHERMEL, H
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

SCHNEID, EJ
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

SOMMER, M
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

SREEKUMAR, P
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

THOMPSON, DJ
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST PHYS & ASTROPHYS,INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY
[5]
Brun R., 1987, CERNDDEE841
[6]
SEARCH FOR DISCRETE SOURCES OF 100 TEV GAMMA-RADIATION
[J].
CRONIN, JW
;
FICK, BE
;
GIBBS, KG
;
KRIMM, HA
;
MASCARENHAS, NC
;
MCKAY, TA
;
MULLER, D
;
NEWPORT, BJ
;
ONG, RA
;
ROSENBERG, LJ
;
GREEN, KD
;
MATTHEWS, J
;
NITZ, D
;
SINCLAIR, D
;
VANDERVELDE, JC
.
PHYSICAL REVIEW D,
1992, 45 (12)
:4385-4391

CRONIN, JW
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

FICK, BE
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

GIBBS, KG
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

KRIMM, HA
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

MASCARENHAS, NC
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

MCKAY, TA
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

MULLER, D
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

NEWPORT, BJ
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

ONG, RA
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

ROSENBERG, LJ
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

GREEN, KD
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

MATTHEWS, J
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

NITZ, D
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

SINCLAIR, D
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

VANDERVELDE, JC
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637
[7]
THE EXPECTED HIGH-ENERGY TO ULTRA HIGH-ENERGY GAMMA-RAY SPECTRUM OF THE CRAB-NEBULA
[J].
DEJAGER, OC
;
HARDING, AK
.
ASTROPHYSICAL JOURNAL,
1992, 396 (01)
:161-172

DEJAGER, OC
论文数: 0 引用数: 0
h-index: 0
机构: Lab. for High Energy Astrophysics, Code 665, NASA Goddard Space Flight Center, Greenbelt

HARDING, AK
论文数: 0 引用数: 0
h-index: 0
机构: Lab. for High Energy Astrophysics, Code 665, NASA Goddard Space Flight Center, Greenbelt
[8]
DEJAGER OC, 1993, IAU5887 CIRC
[9]
FESEFELDT H, 1985, PITHA8502 PREPR
[10]
PULSED HIGH-ENERGY GAMMA-RAYS FROM PSR-1055-52
[J].
FIERRO, JM
;
BERTSCH, DL
;
BRAZIER, KT
;
CHIANG, J
;
DAMICO, N
;
FICHTEL, CE
;
HARTMAN, RC
;
HUNTER, SD
;
JOHNSTON, S
;
KANBACH, G
;
KASPI, VM
;
KNIFFEN, DA
;
LIN, YC
;
LYNE, AG
;
MANCHESTER, RN
;
MATTOX, JR
;
MAYERHASSELWANDER, HA
;
MICHELSON, PF
;
VONMONTIGNY, C
;
NOLAN, PL
;
SCHNEID, E
;
THOMPSON, DJ
.
ASTROPHYSICAL JOURNAL,
1993, 413 (01)
:L27-L30

FIERRO, JM
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

BERTSCH, DL
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

BRAZIER, KT
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

CHIANG, J
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

DAMICO, N
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

FICHTEL, CE
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

HARTMAN, RC
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

HUNTER, SD
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

JOHNSTON, S
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

KANBACH, G
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

KASPI, VM
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

KNIFFEN, DA
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

LIN, YC
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

LYNE, AG
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

MANCHESTER, RN
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

MATTOX, JR
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

MAYERHASSELWANDER, HA
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

MICHELSON, PF
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

VONMONTIGNY, C
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

NOLAN, PL
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

SCHNEID, E
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY

THOMPSON, DJ
论文数: 0 引用数: 0
h-index: 0
机构: MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY