Multifrequency Gravitational Wave Background from Continuous Sources  

作　　者：C. Sivaram Arun Kenath C. Sivaram;Arun Kenath(Indian Institute of Astrophysics, Bangalore, India;Department of Physics and Electronics, CHRIST (Deemed to Be University), Bangalore, India;Department of Physics, Christ Junior College, Bangalore, India)

机构地区：[1]Indian Institute of Astrophysics, Bangalore, India [2]Department of Physics and Electronics, CHRIST (Deemed to Be University), Bangalore, India [3]Department of Physics, Christ Junior College, Bangalore, India

出　　处：《Journal of High Energy Physics, Gravitation and Cosmology》2021年第2期698-714,共17页高能物理（英文）

摘　　要：Gravitational waves have been detected in the past few years from several transient events such as merging stellar mass black holes, binary neutron stars, etc. These waves have frequencies in a band ranging from a few hundred hertz to around a kilohertz to which LIGO type instruments are sensitive. LISA would be sensitive to much lower range of frequencies from SMBH mergers. Apart from these cataclysmic burst events, there are innumerable sources of radiation which are continuously emitting gravitational waves of all frequencies. These include a whole mass range of compact binary and isolated compact objects as well as close planetary stellar entities. In this work, quantitative estimates are made of the gravitational wave background produced in typical frequency ranges from such sources emitting over a Hubble time and the fluctuations in the <i>h</i> values measured in the usual devices. Also estimates are made of the high frequency thermal background gravitational radiation from hot stellar interiors and newly formed compact objects.Gravitational waves have been detected in the past few years from several transient events such as merging stellar mass black holes, binary neutron stars, etc. These waves have frequencies in a band ranging from a few hundred hertz to around a kilohertz to which LIGO type instruments are sensitive. LISA would be sensitive to much lower range of frequencies from SMBH mergers. Apart from these cataclysmic burst events, there are innumerable sources of radiation which are continuously emitting gravitational waves of all frequencies. These include a whole mass range of compact binary and isolated compact objects as well as close planetary stellar entities. In this work, quantitative estimates are made of the gravitational wave background produced in typical frequency ranges from such sources emitting over a Hubble time and the fluctuations in the <i>h</i> values measured in the usual devices. Also estimates are made of the high frequency thermal background gravitational radiation from hot stellar interiors and newly formed compact objects.

关 键 词：Gravitational Waves Neutron Star Mergers Black Hole Mergers Primordial Black Holes Continuous Gravitational Waves Thermal Gravitational Waves Detection of Gravitational Waves 

分 类 号：P15[天文地球—天文学]