GAMMA-RAY OBSERVATIONS OF THE CRAB-NEBULA AT TEV ENERGIES

被引：161

作者：

VACANTI, G

CAWLEY, MF

COLOMBO, E

FEGAN, DJ

HILLAS, AM

KWOK, PW

LANG, MJ

LAMB, RC

LEWIS, DA

MACOMB, DJ

OFLAHERTY, KS

REYNOLDS, PT

WEEKES, TC

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011

[2] ST PATRICKS COLL,DEPT PHYS,MAYNOOTH,KILDARE,IRELAND

[3] HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,CAMBRIDGE,MA 02138

[4] NATL UNIV IRELAND UNIV COLL DUBLIN,DEPT PHYS,DUBLIN 4,IRELAND

[5] UNIV LEEDS,DEPT PHYS,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 377卷 / 02期

关键词：

GAMMA-RAYS; GENERAL; NEBULAE; CRAB NEBULA; PULSARS; RADIATION MECHANISMS;

D O I：

10.1086/170376

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Crab Nebula was observed in TeV gamma rays with the Whipple Observatory high-resolution atmospheric Cherenkov camera and a signal was detected at the 20-sigma-level. The energy spectrum derived has the form N(E) x dE = 2.5 x 10(-10) (E/0.4 TeV)-2.4 +/- 0.3 photons cm-2 s-1 TeV-1 between 0.4 and 4 TeV. There is no evidence for the pulsar periodicity, and the flux is steady on a monthly time scale. If this signal is used to optimize the technique for gamma-ray detection, then a flux one-tenth that of the Crab can be detected at the 3-sigma-level in 60 hr of integration time. For an on-axis source the angular resolution is shown to be +/- 0.-degrees-1.

引用

页码：467 / 479

页数：13