Kavli Affiliate: Edward W. Kolb | First 5 Authors: Edward W. Kolb, Andrew J. Long, , , | Summary: Cosmological gravitational particle production (CGPP) is the creation of particles in an expanding universe due solely to their gravitational interaction. These particles can play an important role in the cosmic history through their connection to various […]
Kavli Affiliate: Michael D. Gladders | First 5 Authors: Osase Omoruyi, Grant R. Tremblay, Francoise Combes, Timothy A. Davis, Michael D. Gladders | Summary: With two central galaxies engaged in a major merger and a remarkable chain of 19 young stellar superclusters wound around them in projection, the galaxy cluster SDSS J1531+3414 ($z=0.335$) offers an […]
Kavli Affiliate: Austin Joyce | First 5 Authors: Nima Arkani-Hamed, Daniel Baumann, Aaron Hillman, Austin Joyce, Hayden Lee | Summary: Perhaps the most basic question we can ask about cosmological correlations is how their strength changes as we smoothly vary kinematic parameters. The answer is encoded in differential equations that govern this evolution in kinematic […]
Kavli Affiliate: Austin Joyce | First 5 Authors: Nima Arkani-Hamed, Daniel Baumann, Aaron Hillman, Austin Joyce, Hayden Lee | Summary: Cosmological fluctuations retain a memory of the physics that generated them in their spatial correlations. The strength of correlations varies smoothly as a function of external kinematics, which is encoded in differential equations satisfied by […]
Kavli Affiliate: Austin Joyce | First 5 Authors: Nima Arkani-Hamed, Daniel Baumann, Aaron Hillman, Austin Joyce, Hayden Lee | Summary: Cosmological fluctuations retain a memory of the physics that generated them in their spatial correlations. The strength of correlations varies smoothly as a function of external kinematics, which is encoded in differential equations satisfied by […]
Kavli Affiliate: Daniel E. Holz | First 5 Authors: Aditya Vijaykumar, Maya Fishbach, Susmita Adhikari, Daniel E. Holz, | Summary: Observations of gravitational waves from binary black hole (BBH) mergers have measured the redshift evolution of the BBH merger rate. The number density of galaxies in the Universe evolves differently with redshift based on their […]
Kavli Affiliate: Daniel E. Holz | First 5 Authors: Aditya Vijaykumar, Maya Fishbach, Susmita Adhikari, Daniel E. Holz, | Summary: Observations of gravitational waves from binary black hole (BBH) mergers have measured the redshift evolution of the BBH merger rate. The number density of galaxies in the Universe evolves differently with redshift based on their […]
Kavli Affiliate: Michael Gladders | First 5 Authors: Alexander Navarre, Gourav Khullar, Matthew Bayliss, Håkon Dahle, Michael Florian | Summary: We present six strongly gravitationally lensed Ly-$alpha$ Emitters (LAEs) at $zsim4-5$ with HST narrowband imaging isolating Ly-$alpha$. Through complex radiative transfer Ly-$alpha$ encodes information about the spatial distribution and kinematics of the neutral hydrogen upon […]
Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Abigail J. Lee, Wendy L. Freedman, In Sung Jang, Barry F. Madore, Kayla A. Owens | Summary: The J-region Asymptotic Giant Branch (JAGB) method is a standard candle that leverages the constant luminosities of color-selected, carbon-rich AGB stars, measured in the near infrared at 1.2 microns. […]
Kavli Affiliate: Robert M. Wald | First 5 Authors: Stefan Hollands, Robert M. Wald, , , | Summary: Operator product expansions (OPEs) in quantum field theory (QFT) provide an asymptotic relation between products of local fields defined at points $x_1, dots, x_n$ and local fields at point $y$ in the limit $x_1, dots, x_n to […]