Measuring the propagation speed of gravitational waves with LISA

被引：28

作者：

Baker, Tessa ^{[1
]}

Calcagni, Gianluca ^{[2
]}

Chen, Anson ^{[1
]}

Fasiello, Matteo ^{[3
,4
]}

Lombriser, Lucas ^{[5
]}

Martinovic, Katarina ^{[6
]}

Pieroni, Mauro ^{[7
]}

Sakellariadou, Mairi ^{[6
]}

Tasinato, Gianmassimo ^{[8
]}

Bertacca, Daniele ^{[9
,10
,11
]}

Saltas, Ippocratis D. ^{[12
]}

机构：

[1] Queen Mary Univ London, Dept Phys & Astron, Mile End Rd, London E1 4NS, England

[2] CSIC, Inst Estruct Mat, Serrano 121, Madrid 28006, Spain

[3] Inst Fis Teor UAM CSIC, C Nicolas Cabrera 13-15, Madrid 28049, Spain

[4] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England

[5] Univ Geneva, Dept Phys Theor, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland

[6] Kings Coll London, Phys Dept, London WC2R 2LS, England

[7] Imperial Coll London, Blackett Lab, London SW7 2AZ, England

[8] Swansea Univ, Phys Dept, Swansea SA2 8PP, W Glam, Wales

[9] Univ Padua, Dipartimento Fis & Astron Galileo Galilei, I-35131 Padua, Italy

[10] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[11] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[12] Czech Acad Sci, Inst Phys, CEICO, Na Slovance 2, Prague 18221 8, Czech Republic

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2022年 / 08期

基金：

瑞士国家科学基金会;

关键词：

Gravitational waves in GR and beyond: theory; modified gravity; MASSIVE BLACK-HOLES; GENERAL-RELATIVITY; EVOLUTION; FIELD;

D O I：

10.1088/1475-7516/2022/08/031

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The propagation speed of gravitational waves, c(T), has been tightly constrained by the binary neutron star merger GW170817 and its electromagnetic counterpart, under the assumption of a frequency-independent c(T). Drawing upon arguments from Effective Field Theory and quantum gravity, we discuss the possibility that modifications of General Relativity allow for transient deviations of c(T) from the speed of light at frequencies well below the band of current ground-based detectors. We motivate two representative Ansatze for c(T)(f), and study their impact upon the gravitational waveforms of massive black hole binary mergers detectable by the LISA mission. We forecast the constraints on c(T)(f) obtainable from individual systems and a population of sources, from both inspiral and a full inspiral-merger-ringdown waveform. We show that LISA will enable us to place stringent independent bounds on departures from General Relativity in unexplored low-frequency regimes, even in the absence of an electromagnetic counterpart.

引用

页数：65

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