摘要:

The status and plans for the first generation long baseline suspended mass interferometers TAMA, GEO, LIGO and Virgo are presented, as well as the expected performances. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387295

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

The interferometers being planned for second generation LIGO promise an order of magnitude increase in broadband strain sensitivity—with the corresponding cubic increase in detection volume—and an extension of the observation band to lower frequencies. In addition, one of the interferometers may be designed for narrowband performance, giving further improved sensitivity over roughly an octave band above a few hundred Hertz. This article discusses the physics and technology of these new interferometer designs, and presents their projected sensitivity spectra. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387296

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

The operation of resonant detectors is described along with the international network of resonant gravitational wave detectors. Searches have been performed for burst and cw sources and these are briefly described. Upper limits on gravitational burst have been established by the network. Limitations of the existing detectors is detailed along with plans for network and individual detector improvement. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387297

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

The Panel on Particle, Nuclear and Gravitational Wave Astrophysics (PNGW) was one of seven science panels that feeds into the current decadal survey,Astronomy and Astrophysics in the New Millennium. The theme of this panel is multi-messenger astronomy, including high energy cosmic rays, TeV gamma-rays, neutrinos and gravitational waves. This paper is a short summary of my talk for the Workshop on Astrophysical Sources for Ground-Based Gravitational Wave-Detectors about the science of the PNGW panel and its report. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387298

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

The National Virtual Observatory is a distributed computational facility that will provide access to the “virtual sky”—the federation of astronomical data archives, object catalogs, and associated information services. The NVO’s “virtual telescope” is a common framework for requesting, retrieving, and manipulating information from diverse, distributed resources. The NVO will make it possible to seamlessly integrate data from the new all-sky surveys, enabling cross-correlations between multi-Terabyte catalogs and providing transparent access to the underlying image or spectral data. Success requires high performance computational systems, high bandwidth network services, agreed upon standards for the exchange of metadata, and collaboration among astronomers, astronomical data and information service providers, information technology specialists, funding agencies, and industry. International cooperation at the onset will help to assure that the NVO simultaneously becomes a global facility. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387299

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

NASA’s Structure and Evolution of the Universe (SEU) program uses X-ray and Gamma ray observations to observe the extremes of gravity throughout the universe. This program will probe the nature of black holes, ultimately obtaining a direct image of the event horizon. It will investigate the large scale structure of the Universe to constrain the location and nature of dark matter. Finally it will search for and study the highest energy processes, that approach those found in the early universe. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387300

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

TheLIGO1I Science Run is planned to begin in mid-2002. The characteristics of the data stream, data volumes, data products, and data availability are discussed. The data analysis activities will be undertaken by the LIGO Scientific Collaboration(LSC2).These activities include operating dedicated on-site pipelines at the LIGO observatories. In addition, a dedicated off-site facility for will be dedicated to melding data from different interferometer datastreams (both LIGO and eventually those of other international projects as part of a network-wide analysis effort). Exploratory university-based research on LIGO data will likely be supported in part by the nascent US computing grid. LIGO Laboratory and the LSC are working on grid computing efforts within the GriPhyN (Grid Physics Network) collaboration research activities. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387301

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

The data analysis effort within the LIGO Scientific Collaboration (LSC) is organized around the four main classes of signals: binary inspiral waves, continuous waves, unmodeled bursts and stochastic waves. The detection of each signal type presents its own challenges. In this article, I discuss the practicalities of data analysis activities within the LSC. This is followed by a description of the sources, algorithms and sensitivity of LIGO with an emphasis on data analysis software development within the LSC. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387302

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

Technical discussions of the Laser Interferometer Gravitational Wave Observatory (LIGO) sensitivity often focuses on its effective sensitivity to gravitational waves in a given band; nevertheless, the goal of the LIGO Project is to “do science.” Exploiting this new observational perspective to explore the Universe is a long-term goal, toward which LIGO’s initial instrumentation is but a first step. Nevertheless, the first generation LIGO instrumentation is sensitive enough that even non-detection—in the form of an upper limit—is also informative. In this brief article I describe in quantitative terms some of the science we can hope to do with first and future generation LIGO instrumentation: it short, the “science reach” of the detector we are building and the ones we hope to build. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387303

出版商:AIP    

年代:1901

数据来源: AIP

摘要:

Double compact objects (neutron stars and black holes) found in binaries with small orbital separations are known to spiral in and are expected to coalesce eventually because of the emission of gravitational waves. Such inspiral and merger events are thought to be primary sources for ground based gravitational-wave interferometric detectors (such as LIGO). Here, we present a brief review of estimates of coalescence rates and we examine the origin and relative importance of uncertainties associated with the rate estimates. For the case of double neutron star systems, we compare the most recent rate estimates to upper limits derived in a number of different ways. We also discuss the implications of the formation of close binaries with two non-recycled pulsars. ©2001 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1387304

出版商:AIP    

年代:1901

数据来源: AIP