Optical selection bias and projection effects in stacked galaxy cluster weak lensing

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Hao-Yi Wu, Matteo Costanzi, Chun-Hao To, Andrés N. Salcedo, David H. Weinberg | Summary: Cosmological constraints from current and upcoming galaxy cluster surveys are limited by the accuracy of cluster mass calibration. In particular, optically identified galaxy clusters are prone to selection effects that can bias […]


Continue.. Optical selection bias and projection effects in stacked galaxy cluster weak lensing

Optical selection bias and projection effects in stacked galaxy cluster weak lensing

Kavli Affiliate: Eli S. Rykoff | First 5 Authors: Hao-Yi Wu, Matteo Costanzi, Chun-Hao To, Andrés N. Salcedo, David H. Weinberg | Summary: Cosmological constraints from current and upcoming galaxy cluster surveys are limited by the accuracy of cluster mass calibration. In particular, optically identified galaxy clusters are prone to selection effects that can bias […]


Continue.. Optical selection bias and projection effects in stacked galaxy cluster weak lensing

LensingETC: a tool to optimize multi-filter imaging campaigns of galaxy-scale strong lensing systems

Kavli Affiliate: Joshua Frieman | First 5 Authors: Anowar J. Shajib, Karl Glazebrook, Tania Barone, Geraint F. Lewis, Tucker Jones | Summary: Imaging data is the principal observable required to use galaxy-scale strong lensing in a multitude of applications in extragalactic astrophysics and cosmology. In this paper, we develop Lensing Exposure Time Calculator (LensingETC) to […]


Continue.. LensingETC: a tool to optimize multi-filter imaging campaigns of galaxy-scale strong lensing systems

The feasibility of constraining DM interactions with high-redshift observations by JWST

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Ali Kurmus, Sownak Bose, Mark Lovell, Francis-Yan Cyr-Racine, Mark Vogelsberger | Summary: Observations of the high redshift universe provide a promising avenue for constraining the nature of the dark matter (DM). This will be even more true following the now successful launch of the James Webb Space […]


Continue.. The feasibility of constraining DM interactions with high-redshift observations by JWST

The feasibility of constraining DM interactions with high-redshift observations by JWST

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Ali Kurmus, Sownak Bose, Mark Lovell, Francis-Yan Cyr-Racine, Mark Vogelsberger | Summary: Observations of the high redshift universe provide a promising avenue for constraining the nature of the dark matter (DM). This will be even more true with the advent of the James Webb Space Telescope (JWST). […]


Continue.. The feasibility of constraining DM interactions with high-redshift observations by JWST

From dawn till disk: Milky Way’s turbulent youth revealed by the APOGEE+Gaia data

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Vasily Belokurov, Andrey Kravtsov, , , | Summary: We use accurate estimates of aluminium abundance provided as part of the APOGEE Data Release 17 and Gaia Early Data Release 3 astrometry to select a highly pure sample of stars with metallicity $-1.5lesssim {rm [Fe/H]}lesssim 0.5$ born in-situ […]


Continue.. From dawn till disk: Milky Way’s turbulent youth revealed by the APOGEE+Gaia data

Snowmass White Paper: Micro- and Macro-Structure of Black Holes

Kavli Affiliate: Emil J. Martinec | First 5 Authors: Iosif Bena, Emil J. Martinec, Samir D. Mathur, Nicholas P. Warner, | Summary: The black-hole information paradox provides a stringent test of would-be theories of quantum gravity. String theory has made significant progress toward a resolution of this paradox, and has led to the fuzzball and […]


Continue.. Snowmass White Paper: Micro- and Macro-Structure of Black Holes

Signature of Supersonic Turbulence in Galaxy Clusters

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Haojie Hu, Yu Qiu, Marie-Lou Gendron-Marsolais, Tamara Bogdanovic, Julie Hlavacek-Larrondo | Summary: The hot intracluster medium (ICM) is thought to be quiescent with low observed velocity dispersions. Surface brightness fluctuations of the ICM also suggest that its turbulence is subsonic with a Kolmogorov scaling relation, indicating that […]


Continue.. Signature of Supersonic Turbulence in Galaxy Clusters

Signature of Supersonic Turbulence in Galaxy Clusters Revealed by AGN-driven H$α$ Filaments

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Haojie Hu, Yu Qiu, Marie-Lou Gendron-Marsolais, Tamara Bogdanovic, Julie Hlavacek-Larrondo | Summary: The hot intracluster medium (ICM) is thought to be quiescent with low observed velocity dispersions. Surface brightness fluctuations of the ICM also suggest that its turbulence is subsonic with a Kolmogorov scaling relation, indicating that […]


Continue.. Signature of Supersonic Turbulence in Galaxy Clusters Revealed by AGN-driven H$α$ Filaments

Tidally Tilted Pulsations in HD 265435, a subdwarf B Star with a Close White Dwarf Companion

Kavli Affiliate: George Ricker | First 5 Authors: Rahul Jayaraman, Gerald Handler, Saul Rappaport, Jim Fuller, Donald W. Kurtz | Summary: Tidally tilted pulsators (TTPs) are an intriguing new class of oscillating stars in binary systems; in such stars, the pulsation axis coincides with the line of apsides, or semi-major axis, of the binary. All […]


Continue.. Tidally Tilted Pulsations in HD 265435, a subdwarf B Star with a Close White Dwarf Companion