Spacetime symmetries and and geometric diffusion

Kavli Affiliate: J. S. Villasenor | First 5 Authors: Marc Basquens, Antonio Lasanta, Emanuel Mompó, Valle Varo, Eduardo J. S. Villaseñor | Summary: We examine relativistic diffusion through the frame and observer bundles associated with a Lorentzian manifold $(M,g)$. Our focus is on spacetimes with a non-trivial isometry group, and we detail the conditions required […]


Continue.. Spacetime symmetries and and geometric diffusion

Spacetime symmetries and geometric diffusion

Kavli Affiliate: J. S. Villasenor | First 5 Authors: Marc Basquens, Antonio Lasanta, Emanuel Mompó, Valle Varo, Eduardo J. S. Villaseñor | Summary: We examine relativistic diffusion through the frame and observer bundles associated with a Lorentzian manifold $(M,g)$. Our focus is on spacetimes with a non-trivial isometry group, and we detail the conditions required […]


Continue.. Spacetime symmetries and geometric diffusion

Evolution and distribution of superbubbles in simulated Milky Way-like galaxies

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Chengzhe Li, Hui Li, Wei Cui, Federico Marinacci, Laura V. Sales | Summary: Stellar feedback plays a crucial role in regulating baryon cycles of a galactic ecosystem, and may manifest itself in the formation of superbubbles in the interstellar medium. In this work, we used a set […]


Continue.. Evolution and distribution of superbubbles in simulated Milky Way-like galaxies

EIGER VI. The Correlation Function, Host Halo Mass and Duty Cycle of Luminous Quasars at $zgtrsim6$

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: Anna-Christina Eilers, Ruari Mackenzie, Elia Pizzati, Jorryt Matthee, Joseph F. Hennawi | Summary: We expect luminous ($M_{1450}lesssim-26.5$) high-redshift quasars to trace the highest density peaks in our universe, and therefore to reside in proto-clusters encompassing an abundance of galaxies in close vicinity. Here, we present observations […]


Continue.. EIGER VI. The Correlation Function, Host Halo Mass and Duty Cycle of Luminous Quasars at $zgtrsim6$

EIGER VI. The Correlation Function, Host Halo Mass and Duty Cycle of Luminous Quasars at $zgtrsim6$

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: Anna-Christina Eilers, Ruari Mackenzie, Elia Pizzati, Jorryt Matthee, Joseph F. Hennawi | Summary: We expect luminous ($M_{1450}lesssim-26.5$) high-redshift quasars to trace the highest density peaks in the early universe. Here, we present observations of four $zgtrsim6$ quasar fields using JWST/NIRCam in imaging and widefield slitless spectroscopy […]


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QCD at 50: Golden Anniversary, Golden Insights, Golden Opportunities

Kavli Affiliate: Frank Wilczek | First 5 Authors: Frank Wilczek, , , , | Summary: The bulk of this paper centers around the tension between confinement and freedom in QCD. I discuss how it can be understood heuristically as a manifestation of self-adhesive glue and how it fits within the larger contexts of energy-time uncertainty […]


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Galaxies lensing quadruply imaged quasars lie close to the centers of their lensing potentials

Kavli Affiliate: Paul L. Schechter | First 5 Authors: Paul L. Schechter, Richard Luhtaru, , , | Summary: In modeling the potentials of quadruply lensed quasars, investigators often employ models for the stellar surface brightness profile of the lensing galaxy for the sole purpose of eliminating its contamination of the light from the quasar images […]


Continue.. Galaxies lensing quadruply imaged quasars lie close to the centers of their lensing potentials

Witt’s hyperbola is both predicted and observed to pass close to the lensing galaxies in quadruple quasars

Kavli Affiliate: Paul L. Schechter | First 5 Authors: Paul L. Schechter, Richard Luhtaru, , , | Summary: When a rectangular hyperbola is constructed from the image positions of a quadruply lensed quasar, as proposed by Witt (1996), it passes very close to the the lensing galaxy. The median measured perpendicular offset between the observed […]


Continue.. Witt’s hyperbola is both predicted and observed to pass close to the lensing galaxies in quadruple quasars