Enhanced Curvature Perturbation and Primordial Black Hole Formation in Two-stage Inflation with a break

Kavli Affiliate: Misao Sasaki | First 5 Authors: Xinpeng Wang, Ying-li Zhang, Misao Sasaki, , | Summary: We investigate a model of $R^2$-gravity with a non-minimally coupled scalar field that gives rise to two-stage inflation with a break, that is, with an intermediate stage where inflation momentarily halts. We find that the power spectrum of […]


Continue.. Enhanced Curvature Perturbation and Primordial Black Hole Formation in Two-stage Inflation with a break

Enhanced Curvature Perturbation and Primordial Black Hole Formation in Two-stage Inflation with a break

Kavli Affiliate: Misao Sasaki | First 5 Authors: Xinpeng Wang, Ying-li Zhang, Misao Sasaki, , | Summary: We investigate a model of $R^2$-gravity with a non-minimally coupled scalar field that gives rise to two-stage inflation with a break, that is, with an intermediate stage where inflation momentarily halts. We find that the power spectrum of […]


Continue.. Enhanced Curvature Perturbation and Primordial Black Hole Formation in Two-stage Inflation with a break

Radio Scrutiny of the X-ray-Weak Tail of Low-Mass Active Galactic Nuclei: A Novel Signature of High-Eddington Accretion?

Kavli Affiliate: Luis C. Ho | First 5 Authors: Jeremiah D. Paul, Richard M. Plotkin, W. N. Brandt, Christopher H. Ellis, Elena Gallo | Summary: The supermassive black holes ($M_{rm BH} sim 10^{6}$$-$$10^{10}~M_odot$) that power luminous active galactic nuclei (AGNs), i.e., quasars, generally show a correlation between thermal disk emission in the ultraviolet (UV) and […]


Continue.. Radio Scrutiny of the X-ray-Weak Tail of Low-Mass Active Galactic Nuclei: A Novel Signature of High-Eddington Accretion?

Radio Scrutiny of the X-ray-Weak Tail of Low-Mass Active Galactic Nuclei: A Novel Signature of High-Eddington Accretion?

Kavli Affiliate: Luis C. Ho | First 5 Authors: Jeremiah D. Paul, Richard M. Plotkin, W. N. Brandt, Christopher H. Ellis, Elena Gallo | Summary: The supermassive black holes ($M_{rm BH} sim 10^{6}$$-$$10^{10}~M_odot$) that power luminous active galactic nuclei (AGNs), i.e., quasars, generally show a correlation between thermal disk emission in the ultraviolet (UV) and […]


Continue.. Radio Scrutiny of the X-ray-Weak Tail of Low-Mass Active Galactic Nuclei: A Novel Signature of High-Eddington Accretion?

Atomic evolution of hydrogen intercalation wave dynamics in palladium nanocrystals

Kavli Affiliate: David T. Limmer | First 5 Authors: Daewon Lee, Sam Oaks-Leaf, Sophia B. Betzler, Yifeng Shi, Siyu Zhou | Summary: Solute-intercalation-induced phase separation creates spatial heterogeneities in host materials, a phenomenon ubiquitous in batteries, hydrogen storage, and other energy devices. Despite many efforts, probing intercalation processes at the atomic scale has been a […]


Continue.. Atomic evolution of hydrogen intercalation wave dynamics in palladium nanocrystals

Revealing kinetically tuned atomic pathways for interfacial strain relaxation

Kavli Affiliate: David T. Limmer | First 5 Authors: Sophia B. Betzler, Daewon Lee, Sam Oaks-Leaf, Colin Ophus, Lin-Wang Wang | Summary: Strain at interfaces may profoundly impact the microstructure and properties of materials; thus, it is a major consideration when designing and engineering materials. Dislocation formation is a commonly known mechanism to release mismatch […]


Continue.. Revealing kinetically tuned atomic pathways for interfacial strain relaxation

The ALMA-QUARKS Survey: II. the ACA 1.3 mm continuum source catalog and the assembly of dense gas in massive star-forming clumps

Kavli Affiliate: Ke Wang | First 5 Authors: Fengwei Xu, Ke Wang, Tie Liu, Lei Zhu, Guido Garay | Summary: Leveraging the high resolution, high sensitivity, and wide frequency coverage of the Atacama Large Millimeter/submillimeter Array (ALMA), the QUARKS survey, standing for "Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures", […]


Continue.. The ALMA-QUARKS Survey: II. the ACA 1.3 mm continuum source catalog and the assembly of dense gas in massive star-forming clumps

No need to know: astrophysics-free gravitational-wave cosmology

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Amanda M. Farah, Thomas A. Callister, Jose María Ezquiaga, Michael Zevin, Daniel E. Holz | Summary: Gravitational waves (GWs) from merging compact objects encode direct information about the luminosity distance to the binary. When paired with a redshift measurement, this enables standard-siren cosmology: a Hubble diagram […]


Continue.. No need to know: astrophysics-free gravitational-wave cosmology

No need to know: astrophysics-free gravitational-wave cosmology

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Amanda M. Farah, Thomas A. Callister, Jose María Ezquiaga, Michael Zevin, Daniel E. Holz | Summary: Gravitational waves from merging compact objects encode direct information about the luminosity distance to the binary. When paired with a redshift measurement, this enables standard-siren cosmology: a Hubble diagram can […]


Continue.. No need to know: astrophysics-free gravitational-wave cosmology

No need to know: astrophysics-free gravitational-wave cosmology

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Amanda M. Farah, Thomas A. Callister, Jose María Ezquiaga, Michael Zevin, Daniel E. Holz | Summary: Gravitational waves from merging compact objects encode direct information about the luminosity distance to the binary. When paired with a redshift measurement, this enables standard-siren cosmology: a Hubble diagram can […]


Continue.. No need to know: astrophysics-free gravitational-wave cosmology