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This paper demonstrates a vibration test for a resonant MEMS scanning system in operation to evaluate the vibration immunity for automotive lidar applications. The MEMS mirror has a reinforcement structure on the backside of the mirror,…

Systems and Control · Electrical Eng. & Systems 2021-04-14 Han Woong Yoo , Rene Riegler , David Brunner , Stephan Albert , Thomas Thurner , Georg Schitter

We assess the possibility of detecting both eccentricity and gas effects (migration and accretion) in the gravitational wave (GW) signal from LISA massive black hole binaries (MBHBs) at redshift $z=1$. Gas induces a phase correction to the…

Astrophysics of Galaxies · Physics 2025-01-16 Mudit Garg , Andrea Derdzinski , Shubhanshu Tiwari , Jonathan Gair , Lucio Mayer

Newly formed black holes are expected to emit characteristic radiation in the form of quasi-normal modes, called ringdown waves, with discrete frequencies. LISA should be able to detect the ringdown waves emitted by oscillating supermassive…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Emanuele Berti , Vitor Cardoso , Clifford M. Will

Compact object binaries, mostly double with dwarfs, are believed to be a potential source of confusion-limited noise for the Laser Interferometer Space Antenna (LISA). In a specific frequency range, this noise may rise above the…

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…

General Relativity and Quantum Cosmology · Physics 2019-03-29 Wen-Biao Han , Xian Chen

Electromagnetic (EM) sounding can constrain the electrical structure of Enceladus and, in turn, the salinity of its ocean and the porosity, fluid content, and thermal state of its hydrothermally active core. Here, we assess the feasibility…

Earth and Planetary Astrophysics · Physics 2026-05-19 Alexander Grayver , Joachim Saur

Rapid advancement in the observation of cosmic strings has been made in recent years placing increasingly stringent constraints on their properties, with $G\mu\lesssim 10^{-11}$ from Pulsar Timing Array (PTA). Cosmic string loops with low…

Cosmology and Nongalactic Astrophysics · Physics 2020-06-02 Zimu Khakhaleva-Li , Craig J. Hogan

Observations by laser interferometric detectors of gravitational waves from inspiraling compact binary systems can be used to search for a dependence of the waves' propagation speed on wavelength, and thereby to bound the mass or Compton…

General Relativity and Quantum Cosmology · Physics 2009-07-22 K G Arun , Clifford M Will

The recent discovery of a $\gamma$-ray counterpart to a gravitational wave event has put extremely stringent constraints on the speed of gravitational waves at the present epoch. In turn, these constraints place strong theoretical pressure…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-14 Luca Amendola , Ignacy Sawicki , Martin Kunz , Ippocratis D. Saltas

The magnetosphere of, and electromagnetic (EM) radiation from pulsars are usually described in the framework of classical electrodynamics. For some pulsars, however, whose emission heights are relatively close to the surface of the neutron…

High Energy Astrophysical Phenomena · Physics 2021-09-29 Dong-Hoon Kim , Sascha Trippe

The Laser Interferometer Space Antenna (LISA) will enable precision studies of Extreme and Intermediate Mass Ratio Inspirals (EMRIs/IMRIs), providing unique probes of astrophysical environments of galactic nuclei and strong-field gravity.…

Instrumentation and Methods for Astrophysics · Physics 2026-03-19 Lorenzo Speri , Francisco Duque , Susanna Barsanti , Alessandro Santini , Shubham Kejriwal , Ollie Burke , Christian E. A. Chapman-Bird

Massive black hole binary systems, with masses in the range ~10^4-10^10 \msun, are among the primary sources of gravitational waves in the frequency window ~10^-9 Hz - 0.1 Hz. Pulsar Timing Arrays (PTAs) and the Laser Interferometer Space…

Astrophysics · Physics 2009-11-13 Alberto Sesana , Alberto Vecchio , Carlo Nicola Colacino

The primary scientific results of the future space-based gravitational wave interferometer LISA will come from the parameter inference of a large variety of gravitational wave sources. However, the presence of calibration errors could…

General Relativity and Quantum Cosmology · Physics 2022-08-31 Etienne Savalle , Jonathan Gair , Lorenzo Speri , Stanislav Babak

The upcoming Laser Interferometer Space Antenna (LISA) will detect up to thousands of extreme-mass-ratio inspirals (EMRIs). These sources will spend $\sim 10^5$ cycles in band, and are therefore sensitive to tiny changes in the…

General Relativity and Quantum Cosmology · Physics 2026-02-13 Shubham Kejriwal , Enrico Barausse , Alvin J. K. Chua

Captures of stellar-mass compact objects (COs) by massive ($\sim 10^6 M_\odot$) black holes (MBHs) are potentially an important source for LISA, the proposed space-based gravitational-wave (GW) detector. The orbits of the inspiraling COs…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Leor Barack , Curt Cutler

We investigate the response function of LISA and consider the adequacy of its commonly used approximation in the high-frequency range of the observational band. We concentrate on monochromatic binary systems, such as white dwarf binaries.…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Alberto Vecchio , Elizabeth D. L. Wickham

The effect of a slowly rotating mass on a forced harmonic oscillator with two degrees of freedom is studied in the weak field approximation. It is found that according to the general theory of relativity there is a shift in the resonat…

Astrophysics · Physics 2009-11-10 Babur M. Mirza

The Laser Interferometer Lunar Antenna (LILA), a concept for measuring sub-Hz gravitational waves on the Moon, would use laser strainmeters to obtain extremely sensitive strain measurements from 1 mHz to 1 Hz. With proposed strain…

The millihertz gravitational-wave frequency band is expected to contain a rich symphony of signals with sources ranging from galactic white dwarf binaries to extreme mass ratio inspirals. Many of these gravitational-wave signals will not be…

Instrumentation and Methods for Astrophysics · Physics 2021-09-14 Sharan Banagiri , Alexander Criswell , Tommy Kuan , Vuk Mandic , Joseph D. Romano , Stephen R. Taylor

I review the expected Galactic sources of gravitational waves, concentrating on the low-frequency domain and summarise the current observational and theoretical knowledge we have. A model for the Galactic population of close binaries, which…

Astrophysics · Physics 2009-11-10 G. Nelemans