Results 91 to 100 of about 2,200,433 (156)

Exploring Primordial Curvature Perturbation on Small Scales with the Lensing Effect of Fast Radio Bursts

open access: yesThe Astrophysical Journal
Cosmological observations, e.g., cosmic microwave background, have precisely measured the spectrum of primordial curvature perturbation on larger scales, but smaller scales are still poorly constrained.
Huan Zhou, Zhengxiang Li, Zong-Hong Zhu
doaj   +1 more source

Quantum-mechanical Suppression of Accretion by Primordial Black Holes

open access: yesThe Astrophysical Journal Letters
The Schwarzschild radii of primordial black holes (PBHs) in the mass range of 6 × 10 ^14 –4 × 10 ^19 g match the sizes of nuclei to atoms. I discuss the resulting quantum-mechanical suppression in the accretion of matter by PBHs in dense astrophysical ...
Abraham Loeb
doaj   +1 more source

Perspectives on fundamental cosmology from Low Earth Orbit and the Moon. [PDF]

open access: yesNPJ Microgravity, 2023
Bertone G, Buchmueller OL, Cole PS.
europepmc   +1 more source

Overmassive black holes and little red dots naturally form in simulations. [PDF]

open access: yesNature
Chon S   +4 more
europepmc   +1 more source

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