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相关论文: Beyond the Damping Tail: Cross-Correlating the Kin…

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The kinetic Sunyaev-Zel'dovich (kSZ) effect is a secondary cosmic microwave background (CMB) anisotropy induced by the scattering of CMB photons off intervening electrons. Through cross-correlations with tracers of large-scale structure,…

宇宙学与河外天体物理 · 物理学 2021-04-28 Gabriela Sato-Polito , José Luis Bernal , Kimberly K. Boddy , Marc Kamionkowski

We propose a cross-internal linear combination (cross-ILC) approach to measure the small-scale cosmic microwave background (CMB) anisotropies robustly against the contamination from astrophysical signals. In particular, we focus on the…

宇宙学与河外天体物理 · 物理学 2023-06-21 Srinivasan Raghunathan , Yuuki Omori

The kinetic Sunyaev-Zel'dovich effect (kSZ) and patchy screening effect are two complementary cosmic microwave background (CMB) probes of the reionization era. The kSZ effect is a relatively strong signal, but is difficult to disentangle…

宇宙学与河外天体物理 · 物理学 2026-01-07 Darby Kramer , Alexander van Engelen , Christopher Cain , Niall MacCrann , Hy Trac , Skylar Grayson , Evan Scannapieco , Blake Sherwin

Measurements of the Cosmic Microwave Background (CMB) temperature anisotropies on large angular scales have uncovered a number of anomalous features of marginal statistical significance, such as a hemispherical power asymmetry, lack of…

宇宙学与河外天体物理 · 物理学 2020-07-01 Juan I. Cayuso , Matthew C. Johnson

We discuss the secondary cosmic microwave background (CMB) anisotropy due to kinetic Sunyaev-Zel'dovich (kSZ) effect from ionized bubbles around individual quasars prior to the reionization of the Universe. The bubbles create local…

宇宙学与河外天体物理 · 物理学 2023-04-03 Sandeep Kumar Acharya , Subhabrata Majumdar

Due to cosmic variance we cannot learn any more about large-scale inhomogeneities from the primary cosmic microwave background (CMB) alone. More information on large scales is essential for resolving large angular scale anomalies in the…

宇宙学与河外天体物理 · 物理学 2017-03-08 Alexandra Terrana , Mary-Jean Harris , Matthew C. Johnson

A new generation of CMB experiments will soon make sensitive high resolution maps of the microwave sky. At angular scales less than $\sim$10 arcminutes, most CMB anisotropies are generated at z $< 1000$, rather than at the surface of last…

天体物理学 · 物理学 2011-02-11 Mario A. Riquelme , David N. Spergel

The secondary anisotropies of the cosmic microwave background (CMB) provide a wealth of astrophysical and cosmological information. Pairing measurements of the CMB temperature map obtained by DR5 of the Atacama Cosmology Telescope (ACT)…

宇宙学与河外天体物理 · 物理学 2025-06-24 Boryana Hadzhiyska , Noah Sailer , Simone Ferraro

We use numerical simulation of cosmological reionization to calculate the secondary CMB anisotropies in a representative flat low density cosmological model. We show that the kinetic Sunyaev-Zel'dovich effect (scattering off of moving…

天体物理学 · 物理学 2009-10-31 Nickolay Y. Gnedin , Andrew H. Jaffe

The kinetic Sunyaev-Zel'dovich (kSZ) effect, i.e., the Doppler boost of cosmic microwave background (CMB) photons caused by their scattering off free electrons in galaxy clusters and groups with non-zero bulk velocity, is a powerful window…

宇宙学与河外天体物理 · 物理学 2023-03-22 Boris Bolliet , J. Colin Hill , Simone Ferraro , Aleksandra Kusiak , Alex Krolewski

We predict the level of small-scale anisotropy in the cosmic microwave background (CMB) due to the Sunyaev--Zel'dovich (SZ) effect for the ensemble of cosmological models that are consistent with current measurements of large-scale CMB…

天体物理学 · 物理学 2009-11-07 Gilbert P. Holder

Upcoming cosmic microwave background (CMB) surveys will soon make the first detection of the polarized Sunyaev-Zel'dovich effect, the linear polarization generated by the scattering of CMB photons on the free electrons present in collapsed…

宇宙学与河外天体物理 · 物理学 2018-06-04 Joel Meyers , P. Daniel Meerburg , Alexander van Engelen , Nicholas Battaglia

High-precision measurements of the Cosmic Microwave Background (CMB) will soon allow for the unprecedented detection of small-scale secondary anisotropies, such as the kinetic Sunyaev-Zel'dovich (kSZ) effect. Linking the kSZ power spectrum…

The Sunyaev-Zel'dovich (SZ) effect from clusters of galaxies should yield a significant signal in cosmic microwave background(CMB) experiments at small angular scales ($\ell \ga 1000$). Experiments with sufficient frequency coverage should…

天体物理学 · 物理学 2007-05-23 Gilbert P. Holder , John E. Carlstrom

The power spectrum of reconstructed cosmic microwave background (CMB) lensing maps is a powerful tool for constraints on cosmological parameters like the sum of the neutrino masses and the dark energy equation of state. One possible…

宇宙学与河外天体物理 · 物理学 2022-02-23 Hongbo Cai , Mathew S. Madhavacheril , J. Colin Hill , Arthur Kosowsky

Gravitational lensing of the cosmic microwave background (CMB) is expected to be amongst the most powerful cosmological tools for ongoing and upcoming CMB experiments. In this work, we investigate a bias to CMB lensing reconstruction from…

宇宙学与河外天体物理 · 物理学 2018-01-26 Simone Ferraro , J. Colin Hill

Yes. Future CMB experiments such as Advanced ACTPol and CMB-S4 should achieve measurements with S/N of $> 0.1$ for the typical galaxies in redshift surveys. These measurements will provide complementary measurements of the growth rate of…

宇宙学与河外天体物理 · 物理学 2017-02-14 Naonori S. Sugiyama , Teppei Okumura , David N. Spergel

The polarized Sunyaev-Zel'dovich (pSZ) effect is sourced by the Thomson scattering of CMB photons from distant free electrons and yields a novel view of the CMB quadrupole throughout the observable Universe. Galaxy shear measures the shape…

宇宙学与河外天体物理 · 物理学 2022-10-19 Oliver H. E. Philcox , Matthew C. Johnson

The nominal mission maps from the Planck satellite contain a wealth of information about secondary anisotropies in the cosmic microwave background (CMB), including those induced by the thermal Sunyaev-Zel'dovich (tSZ) effect and…

宇宙学与河外天体物理 · 物理学 2014-04-10 J. Colin Hill , David N. Spergel

With the new generation of instruments for Cosmic Microwave Background (CMB) observations aiming at an accuracy level of a few percent in the measurement of the angular power spectrum of the anisotropies, the study of the contributions due…

天体物理学 · 物理学 2007-05-23 N. Aghanim , S. Prunet , 0. Forni , F. R. Bouchet
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