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Stellar-mass black hole binaries (BHBs) in galactic nuclei are gravitationally perturbed by the central supermassive black hole (SMBH) of the host galaxy, potentially inducing strong eccentricity oscillations through the eccentric…

高能天体物理现象 · 物理学 2024-08-21 Alan M. Knee , Jess McIver , Smadar Naoz , Isobel M. Romero-Shaw , Bao-Minh Hoang , Evgeni Grishin

We study a novel electromagnetic signature of supermassive black hole binaries whose inspiral starts being dominated by gravitational wave (GW) emission. Recent simulations suggest that the binary's member BHs can continue to accrete gas…

星系天体物理 · 物理学 2017-09-01 Girish Kulkarni , Abraham Loeb

In the next decade, the Laser Interferometer Space Antenna (LISA) will detect the coalescence of massive black hole binaries (MBHBs) in the range $[10^4, 10^8] \, \rm M_{\odot}$, up to $z\sim10$. Their gravitational wave (GW) signal is…

高能天体物理现象 · 物理学 2022-11-23 A. Mangiagli , C. Caprini , M. Volonteri , S. Marsat , S. Vergani , N. Tamanini , H. Inchauspé

We consider a potentially new class of gravitational wave sources consisting of a white dwarf coalescing into a massive black hole in the mass range ~10^4-10^5\msun. These sources are of particular interest because the gravitational wave…

天体物理学 · 物理学 2009-11-13 A. Sesana , A. Vecchio , M. Eracleous , S. Sigurdsson

Massive black hole binaries, with masses in the range 1E3-1E8 Msun, are expected to be the most powerful sources of gravitational radiation at mHz frequencies, and hence are among the primary targets for the planned Laser Interferometer…

天体物理学 · 物理学 2009-11-10 A. Sesana , F. Haardt , P. Madau , M. Volonteri

On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with…

广义相对论与量子宇宙学 · 物理学 2016-02-24 The LIGO Scientific Collaboration , the Virgo Collaboration

Space-born gravitational-wave interferometers such as {\it LISA} will detect the gravitational wave (GW) signal from the inspiral, plunge and ringdown phases of massive black hole binary mergers at cosmological distances. From the inspiral…

天体物理学 · 物理学 2009-11-10 Scott A. Hughes , Kristen Menou

The space-based gravitational wave (GW) detector, \emph{evolved Laser Interferometer Space Antenna} (eLISA) is expected to observe millions of compact Galactic binaries that populate our Milky Way. GW measurements obtained from the eLISA…

太阳与恒星天体物理 · 物理学 2015-06-22 Sweta Shah , Gijs Nelemans

During the final moments of a binary black hole (BH) merger, the gravitational wave (GW) luminosity of the system is greater than the combined electromagnetic output of the entire observable universe. However, the extremely weak coupling…

高能天体物理现象 · 物理学 2015-05-20 Jeremy D. Schnittman

Mergers of gas-rich galaxies lead to black hole binaries that coalesce as a result of dynamical friction on the ambient gas. Once the binary tightens to <10^3 Schwarzschild radii, its merger is driven by the emission of gravitational waves…

宇宙学与河外天体物理 · 物理学 2010-04-06 Abraham Loeb

If binary intermediate-mass black holes (IMBHs; with masses between 100 and $10^4 \Msun$) form in dense stellar clusters, their inspiral will be detectable with the planned Laser Interferometer Space Antenna (LISA) out to several Gpc. Here…

太阳与恒星天体物理 · 物理学 2014-11-18 Pau Amaro-Seoane , Cole Miller , Marc Freitag

The dynamical evolution of binaries of intermediate-massive black holes (IMBHs, massive black holes with a mass ranging between $10^2$ and $10^4 M_{\odot}$) in stellar clusters has recently received an increasing amount of attention. This…

星系天体物理 · 物理学 2015-05-13 Pau Amaro-Seoane , Christoph Eichhorn , Edward K. Porter , Rainer Spurzem

Coalescing, massive black-hole (MBH) binaries are the most powerful sources of gravitational waves (GWs) in the Universe, which makes MBH science a prime focus for ongoing and upcoming GW observatories. The Laser Interferometer Space…

Stellar mass compact objects in short period orbits about a $10^{4.5}$--$10^{7.5}$ solar mass massive black hole (MBH) are thought to be a significant continuous-wave source of gravitational radiation for the ESA/NASA Laser Interferometer…

天体物理学 · 物理学 2010-12-13 Louis J. Rubbo , Kelly Holley-Bockelmann , Lee Samuel Finn

According to General Relativity (GR), gravitational waves (GWs) should travel at the speed of light $c$. However, some theories beyond GR predict deviations of the velocity of GWs $c_{\rm gw}$ from $c$, and some of those expect vacuum…

广义相对论与量子宇宙学 · 物理学 2025-11-07 Tian-Yong Cao , Shu-Xu Yi

The nonlinear aspect of gravitational wave generation that produces power at harmonics of the orbital frequency, above the fundamental quadrupole frequency, is examined to see what information about the source is contained in these higher…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Ronald W. Hellings , Thomas A. Moore

It is known that massive black holes (MBHs) of $10^{5-7}\,M_\odot$ could capture small compact objects to form extreme-mass-ratio inspirals (EMRIs). Such systems emit gravitational waves (GWs) in the band of the Laser Interferometer Space…

广义相对论与量子宇宙学 · 物理学 2019-03-29 Wen-Biao Han , Xian Chen

Electromagnetic counterparts of gravitational wave events usually involve neutron stars during compact binary coalescences. On the other hand, the community generally believes that electromagnetic emissions are hardly generated during the…

广义相对论与量子宇宙学 · 物理学 2021-11-09 Carlos A. Benavides-Gallego , Wen-Biao Han

Compressible, Riemann S-type ellipsoids can emit gravitational waves (GWs) with a chirp-like behavior (hereafter chirping ellipsoids, CELs). We show that the GW frequency-amplitude evolution of CELs (mass $\sim 1$~M$_\odot$, radius…

星系天体物理 · 物理学 2023-10-12 J. F. Rodriguez , J. A. Rueda , R. Ruffini , J. I. Zuluaga , J. M. Blanco-Iglesias , P. Loren-Aguilar

The Laser Interferometer Gravitational Wave Observatory (LIGO) is one of a new generation of detectors of gravitational radiation. The existence of gravitational radiation was first predicted by Einstein in 1916, however gravitational waves…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Duncan A. Brown
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