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Dark matter (DM) occupies the majority of matter content in the universe and is probably cold (CDM). However, modifications to the standard CDM model may be required by the small-scale observations, and DM may be self-interacting (SIDM) or…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-27 Xiao Guo , Youjun Lu

Proposed space-based gravitational-wave (GW) detectors such as DECIGO and BBO will detect ~10^6 neutron-star (NS) binaries and determine the luminosity distances to the binaries with high precision. Combining the luminosity distances with…

Cosmology and Nongalactic Astrophysics · Physics 2012-02-27 Atsushi Nishizawa , Kent Yagi , Atsushi Taruya , Takahiro Tanaka

We study gravitational lensing of gravitational waves from compact object binaries as a probe of compact dark matter (DM) objects such as primordial black holes. Assuming a point mass lens, we perform parameter estimation of lensed…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-16 Juan Urrutia , Ville Vaskonen

Primordial black holes (PBHs) with masses between $10^{14}$ and $10^{20}$ kg are candidates to contribute a substantial fraction of the total dark matter abundance. When in orbit around the center of a star, which can possibly be a…

General Relativity and Quantum Cosmology · Physics 2025-10-03 Vitorio A. De Lorenci , David I. Kaiser , Patrick Peter , Lucas S. Ruiz , Noah E. Wolfe

The detection of gravitational waves (GWs) has led to a deeper understanding of binaries of ordinary astrophysical objects, including neutron stars and black holes. In this work, we point out that binary systems may also exist in a dark…

Cosmology and Nongalactic Astrophysics · Physics 2023-12-22 Yang Bai , Sida Lu , Nicholas Orlofsky

Various theories of dark matter predict distinctive astrophysical signatures in gravitational-wave sources that could be observed by ground- and space-based laser interferometers. Different candidates-including axions, dark photons,…

High Energy Astrophysical Phenomena · Physics 2026-01-01 Andrew L. Miller

If a significant fraction of dark matter is in the form of compact objects, they will cause microlensing effects in the gravitational wave (GW) signals observable by LIGO and Virgo. From the non-observation of microlensing signatures in the…

General Relativity and Quantum Cosmology · Physics 2022-02-24 S. Basak , A. Ganguly , K. Haris , S. Kapadia , A. K. Mehta , P. Ajith

Until recently, the only way to observe the Universe was from light received by telescopes. But we are now able to measure gravitational waves, which are ripples in the fabric of the Universe predicted by Albert Einstein. If two very dense…

Popular Physics · Physics 2019-06-19 Stephen R. Taylor

In the coming decade, gravitational waves will convert the study of general relativistic aspects of black holes and stars from a largely theoretical enterprise to a highly interactive, observational/theoretical one. For example,…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Kip S. Thorne

Gravitational wave observations will be excellent tools for making precise measurements of processes that occur in very strong-field regions of spacetime. Extreme mass ratio systems, formed by the capture of a stellar mass body compact by a…

General Relativity and Quantum Cosmology · Physics 2010-02-15 Scott A. Hughes

In this white paper, we discuss the prospects for characterizing and identifying dark matter using gravitational waves, covering a wide range of dark matter candidate types and signals. We argue that present and upcoming gravitational wave…

The detection of a sub-solar mass black hole could yield dramatic new insights into the nature of dark matter and early-Universe physics, as such objects lack a traditional astrophysical formation mechanism. Gravitational waves allow for…

High Energy Astrophysical Phenomena · Physics 2023-06-16 Noah E. Wolfe , Salvatore Vitale , Colm Talbot

Astronomical observations in the electromagnetic window - microwave, radio and optical - have revealed that most of the Universe is dark. The only reason we know that dark matter exists is because of its gravitational influence on luminous…

General Relativity and Quantum Cosmology · Physics 2007-05-23 B. S. Sathyaprakash

Galactic dark matter (DM) particles, having non-gravitational interactions with nucleons, can interact with stellar constituents and eventually become captured within stars. Over the lifetime of the celestial body, these non-annihilating,…

High Energy Physics - Phenomenology · Physics 2024-12-04 Sulagna Bhattacharya

Gravitational waves (GW) are expected to interact with dark energy and dark matter, affecting their propagation on cosmological scales. In order to model this interaction, we derive a gauge invariant effective equation and action valid for…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-29 Antonio Enea Romano

Gravitational waves (GWs) originated from mergers of stellar-mass binary black holes (SBBHs) are considered as dark sirens in cosmology since they usually do not have electromagnetic counterparts. In order to study cosmos with these events,…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-23 Muxin Liu , Chang Liu , Yi-Ming Hu , Lijing Shao , Yacheng Kang

Gravitational waves (GWs) are signals that propagate across large distances in the Universe, and thus, they bring information on the cosmic history. GW sources are at the same time distance indicators and tracers of the matter field. Events…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-21 Isabela S. Matos

The new generation of gravitational wave (GW) detectors have the potential to open a novel window onto the violent dynamics of core collapse. Although it is certain that core collapse events generate gravitational radiation, understanding…

Astrophysics · Physics 2007-05-23 Chris L. Fryer , Daniel E. Holz , Scott A. Hughes , Michael S. Warren

The detection of gravitational waves (GW) by the LIGO and Virgo collaborations offers a whole new range of possible tests and opens up a new window which may shed light on the nature of dark energy and dark matter. In the present work we…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-28 Minghui Du , Weiqiang Yang , Lixin Xu , Supriya Pan , David F. Mota