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We use a self-consistent Monte Carlo treatment of stellar dynamics to investigate black hole binaries that are dynamically ejected from globular clusters to determine if they will be gravitational wave sources. We find that many of the…

星系天体物理 · 物理学 2015-05-19 J. M. B. Downing , M. J. Benacquista , M. Giersz , R. Spurzem

The LISA datastream will be populated by large instrumental and astrophysical noises, both potentially exhibiting long-term non-stationarities. Modelling and inferring on them is a challenging task, central for accurate signal…

天体物理仪器与方法 · 物理学 2025-07-01 Federico Pozzoli , Riccardo Buscicchio , Antoine Klein , Daniele Chirico

Extragalactic foregrounds in temperature maps of the Cosmic Microwave Background (CMB) severely limit the ability of standard estimators to reconstruct the weak lensing potential. These foregrounds are not fully removable by multi-frequency…

宇宙学与河外天体物理 · 物理学 2020-12-03 Noah Sailer , Emmanuel Schaan , Simone Ferraro

We anticipate that the data acquired by the Laser Interferometer Space Antenna (LISA) will be dominated by the gravitational wave signals from several astrophysical populations. The analysis of these data is a new challenge and is the main…

广义相对论与量子宇宙学 · 物理学 2025-04-16 Senwen Deng , Stanislav Babak , Maude Le Jeune , Sylvain Marsat , Éric Plagnol , Andrea Sartirana

Disentangling the rich astrophysical structure of the stochastic gravitational-wave background (SGWB) from its cosmological component is essential for the Laser Interferometer Space Antenna (LISA) to access the physics of the early Universe…

宇宙学与河外天体物理 · 物理学 2025-06-25 Mesut Çalışkan , Neha Anil Kumar , Marc Kamionkowski , Sihao Cheng

The space mission LISA (Laser Interferometer Space Antenna), scheduled for launch in 2035, aims to detect gravitational wave (GW) signals in the milli-Hz band. In the context of ESA Voyage 2050 Call for new mission concepts, other frequency…

高能天体物理现象 · 物理学 2025-10-22 Alice Perego , Matteo Bonetti , Alberto Sesana , Silvia Toonen , Valeriya Korol

Gravitational lensing of the cosmic microwave background (CMB), a long-standing prediction of the standard cosmolgical model, is ultimately expected to be an important source of cosmological information, but first detection has not been…

天体物理学 · 物理学 2008-12-18 Kendrick M. Smith , Oliver Zahn , Olivier Dore

The noise produced by the inspiral of millions of white dwarf binaries in the Milky Way may pose a threat to one of the main goals of the space-based LISA mission: the detection of massive black hole binary mergers. We present a novel study…

广义相对论与量子宇宙学 · 物理学 2023-03-08 Charles Badger , Katarina Martinovic , Alejandro Torres-Forné , Mairi Sakellariadou , José A. Font

We investigate the capability of various configurations of the space interferometer eLISA to probe the late-time background expansion of the universe using gravitational wave standard sirens. We simulate catalogues of standard sirens…

宇宙学与河外天体物理 · 物理学 2017-03-09 Nicola Tamanini , Chiara Caprini , Enrico Barausse , Alberto Sesana , Antoine Klein , Antoine Petiteau

In this work we measure and study the cross-correlation signal between a foreground sample of GAMA galaxies with spectroscopic redshifts in the range $0.2<z<0.8$, and a background sample of H-ATLAS galaxies with photometric redshifts…

We propose a new internal linear combination (ILC) method in the pixel space, applicable on large angular scales of the sky, to estimate a foreground minimized Cosmic Microwave Background (CMB) temperature anisotropy map by incorporating…

宇宙学与河外天体物理 · 物理学 2018-11-07 Vipin Sudevan , Rajib Saha

With the recent strong developments of TianQin and Taiji, we now have an increasing chance to make a correlation analysis in the mHz band by operating them together with LISA. Assuming two LISA-like triangular detectors at general…

广义相对论与量子宇宙学 · 物理学 2021-01-04 Naoki Seto

Building on the great success of the LISA Pathfinder mission, the outlines of a new LISA mission design were laid out at the $11^{\rm th}$ International LISA Symposium in Zurich. The revised design calls for three identical spacecraft…

天体物理仪器与方法 · 物理学 2017-10-09 Neil Cornish , Travis Robson

The forthcoming space-based gravitational wave observatory LISA will open a new window for the measurement of galactic binaries, which will deliver unprecedented information about these systems. However, the detection of galactic binary…

广义相对论与量子宇宙学 · 物理学 2021-11-24 Aurore Blelly , Jérôme Bobin , Hervé Moutarde

The recent Advanced LIGO and Advanced Virgo joint observing runs have not claimed a stochastic gravitational-wave background detection, but one expects this to change as the sensitivity of the detectors improves. The challenge of claiming a…

广义相对论与量子宇宙学 · 物理学 2021-03-03 Katarina Martinovic , Patrick M. Meyers , Mairi Sakellariadou , Nelson Christensen

Detecting and coherently characterizing thousands of gravitational-wave signals is a core data-analysis challenge for the Laser Interferometer Space Antenna (LISA). Transient artifacts, or "glitches", with disparate morphologies are…

We present a new approach to component separation in multifrequency CMB experiments by formulating the problem as that of partitioning the sky into pixel clusters such that within each pixel cluster the foregrounds have similar spectrum,…

宇宙学与河外天体物理 · 物理学 2019-03-18 Rishi Khatri

The theory behind compressive sampling pre-supposes that a given sequence of observations may be exactly represented by a linear combination of a small number of basis vectors. In practice, however, even small deviations from an exact…

最优化与控制 · 数学 2014-06-30 Jonathan M. Nichols , Albert K. Oh , Rebecca M. Willett

Stochastic backgrounds of gravitational waves from primordial first-order phase transitions are a key probe of physics beyond the Standard Model. They represent one of the best prospects for observing or constraining new physics with the…

宇宙学与河外天体物理 · 物理学 2025-05-08 Mark Hindmarsh , Deanna C. Hooper , Tiina Minkkinen , David J. Weir

Detecting stochastic background radiation of cosmological origin is an exciting possibility for current and future gravitational-wave (GW) detectors. However, distinguishing it from other stochastic processes, such as instrumental noise and…

广义相对论与量子宇宙学 · 物理学 2023-04-28 Quentin Baghi , Nikolaos Karnesis , Jean-Baptiste Bayle , Marc Besançon , Henri Inchauspé