Wideband dual sphere detector of gravitational waves

被引：69

作者：

Cerdonio, M

Conti, L

Lobo, JA

Ortolan, A

Taffarello, L

Zendri, JP

机构：

[1] Ist Nazl Fis Nucl, Padova Sect, I-35100 Padua, Italy

[2] Univ Padua, Dept Phys, I-35100 Padua, Italy

[3] Univ Barcelona, Dept Fis Fonamental, E-08028 Barcelona, Spain

[4] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.87.031101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the concept of a sensitive and broadband resonant mass gravitational wave detector. A massive sphere is suspended inside a second hollow one. Short, high-finesse Fabry-Perot optical cavities read out the differential displacements of the two spheres as their quadrupole modes are excited. At cryogenic temperatures, one approaches the standard quantum limit for broadband operation with reasonable choices for the cavity finesses and the intracavity light power. A molybdenum detector, of overall size of 2 m, would reach spectral strain sensitivities of 2 x 10(-23) Hz(-1/2) between 1000 and 3000 Hz.

引用

页码：31101 / 1

页数：4

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