THE LAPEX EXPERIMENT FOR OBSERVATION OF THE SUPERNOVA SN-1987A IN HARD X-RAYS

被引：2

作者：

FRONTERA, F

BASILI, A

DALFIUME, D

FRANCESCHINI, T

LANDINI, G

MORELLI, E

POULSEN, JM

SILVESTRI, S

COSTA, E

CARDINI, D

EMANUELE, A

RUBINI, A

机构：

[1] Istituto TESRE, CNR, Bologna

[2] Dipartimento di Fisica dell'Università, Ferrara

[3] Istituto Astrofisica Spaziale, CNR, Frascati (Roma)

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-GEOPHYSICS AND SPACE PHYSICS | 1990年 / 13卷 / 02期

关键词：

Aerospace instrumentation; PACS; 95.55.Lb; 97.60.Bw; Supernovae; X-ray and γ-ray telescopes;

D O I：

10.1007/BF02507081

中图分类号：

学科分类号：

摘要：

The LAPEX payload is described in the configuration that will be launched to observe the supernova SN 1987A. The balloon flight will be performed from Alice Springs (Australia) in April 1989 as a part of a NASA balloon campaign. The experiment will allow simultaneous observations of source and background in order to minimize systematic errors due to background variations. The limiting flux sensitivity of the instrument in the (20÷200) keV energy band is 4·10-6 ph/(cm2s keV) or ∼2.5 mCrab for a 104 s observation of SN 1987A. The presence of a57Co emission line in the SN 1987A photon spectrum could be detected down to an intensity level of ∼8·10-5 photons/cm2s as at 99.7% confidence level. The high resolution of the event timing (<0.1 ms) will make it possible to detect millisecond pulsations with amplitudes down to ∼4% of the expected average flux from SN 1987A in the (20÷60) keV band. © 1990 Società Italiana di Fisica.

引用

页码：437 / 444

页数：8

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