What and where manifolds emerge and align with perception in deep neural network models of sound localization

Posted by dbos Hopkins

Kavli Affiliate: Xiaoqin Wang | Authors: Chenggang Chen, Zhiyu Yang and Xiaoqin Wang | Summary: Whether the auditory cortex has parallel pathways for sound identification (“what”) and localization (“where”), and whether it contains a map of auditory space, is debated. Here, we examined the low-dimensional structure (manifold) of “what” and “where” representations in deep neural […]


Continue.. What and where manifolds emerge and align with perception in deep neural network models of sound localization

Shared somatosensory–motor neural population dynamics track motor recovery after stroke

Posted by dbos UCSF

Kavli Affiliate: Karunesh Ganguly | Authors: Ian S Heimbuch, Preeya Khanna, Lisa Novik, Robert J Morecraft and Karunesh Ganguly | Summary: Although somatosensation is known to be important for precise hand control, how coordinated activity across sensory and motor cortical areas supports hand movements and object interactions is unclear. We simultaneously recorded neural activity from […]


Continue.. Shared somatosensory–motor neural population dynamics track motor recovery after stroke

Consistent inclusion of triple substitutions within a coupled cluster based static quantum embedding theory

Posted by klaurent Berkeley

Kavli Affiliate: Birgitta Whaley | Summary:We incorporate a solver for the fragment problem with accuracy beyond coupled cluster singles and doubles (CCSD) into the previously proposed static embedding framework, MPCC. To this end, we employ a CCSDT solver for the fragment subsystem. For the environment subsystem, we construct a perturbative estimate of the triples amplitudes, […]


Continue.. Consistent inclusion of triple substitutions within a coupled cluster based static quantum embedding theory

Direct pathway to the Early Supermassive Black Holes: A Red Super-Eddington Quasar in a Massive Starburst Host at $z=7.2$

Posted by klaurent Peking

Kavli Affiliate: Luis Ho | Summary:We present a panchromatic optical-mm characterization of GNz7q, a recently identified X-ray weak, rapidly growing red quasar embedded within a dusty starburst galaxy at $z=7.1899$, using the full suite of JWST/NIRCam, NIRSpec, MIRI, and archival NOEMA observations. Our deep NIRSpec/G395M spectroscopy reveals unambiguous broad Balmer emission (FWHM $=2221pm20$kms$^-1$), confirming a […]


Continue.. Direct pathway to the Early Supermassive Black Holes: A Red Super-Eddington Quasar in a Massive Starburst Host at $z=7.2$

A simple model for extracting astrophysics from black hole images

Posted by klaurent Chicago

Kavli Affiliate: Daniel Holz | Summary:The Event Horizon Telescope (EHT) is providing unprecedented high-resolution images of supermassive black holes. These images are fundamentally related to properties of the luminous accretion disks, since black holes themselves produce no light. We develop a simple prescription to relate observational black hole image features to a toy model for […]


Continue.. A simple model for extracting astrophysics from black hole images

A simple model for extracting astrophysics from black hole images

Posted by klaurent Chicago

Kavli Affiliate: Daniel Holz | Summary:The Event Horizon Telescope (EHT) is providing unprecedented high-resolution images of supermassive black holes. These images are fundamentally related to properties of the luminous accretion disks, since black holes themselves produce no light. We develop a simple prescription to relate observational features of black hole images to a toy model […]


Continue.. A simple model for extracting astrophysics from black hole images

Is cosmic birefringence due to dark energy or dark matter? Simulation-based inference

Posted by klaurent Tokyo

Kavli Affiliate: Eiichiro Komatsu | Summary:Simulation-based inference (SBI) is a powerful inference technique for cases where the exact functional form of the likelihood is not known. A prime example is the likelihood of cross-correlation power spectra of the cosmic microwave background (CMB) fields at low multipoles, $elllesssim 10$. In this paper, we investigate a parity-violating […]


Continue.. Is cosmic birefringence due to dark energy or dark matter? Simulation-based inference

Subaru High-$z$ Exploration of Low-Luminosity Quasars (SHELLQs). XXV. Large-scale environments of low-luminosity quasars at $zsim6$ traced by Ly$α$ emitters

Posted by klaurent Tokyo

Kavli Affiliate: John Silverman | Summary:High-$z$ quasars are believed to reside in massive dark matter haloes (DMHs), suggesting that they reside in galaxy overdense regions. However, previous observations have shown a range of environments around them. These fields have been limited to luminous quasars ($M_1450lesssim-25$), for which photoevaporation may hinder galaxy formation in their vicinity. […]


Continue.. Subaru High-$z$ Exploration of Low-Luminosity Quasars (SHELLQs). XXV. Large-scale environments of low-luminosity quasars at $zsim6$ traced by Ly$α$ emitters

Subaru High-$z$ Exploration of Low-Luminosity Quasars (SHELLQs). XXV. Large-scale environments of low-luminosity quasars at $zsim6$ traced by Ly$α$ emitters

Posted by klaurent Tokyo

Kavli Affiliate: John Silverman | Summary:High-$z$ quasars are believed to reside in massive dark matter haloes (DMHs), suggesting that they reside in galaxy overdense regions. However, previous observations have shown a range of environments around them. The previous targets are limited to bright quasars ($M_1450lesssim-25$), for which photoevaporation may hinder galaxy formation in their vicinity. […]


Continue.. Subaru High-$z$ Exploration of Low-Luminosity Quasars (SHELLQs). XXV. Large-scale environments of low-luminosity quasars at $zsim6$ traced by Ly$α$ emitters

Numerical simulation of the stochastic formalism including non-Markovianity

Posted by klaurent Tokyo

Kavli Affiliate: Masahiro Kawasaki | Summary:We numerically investigate stochastic dynamics in cosmology by solving Langevin equations for Infrared (IR) modes with stochastic noises generated by Ultraviolet (UV) modes at the coarse-graining scale. By construction, the stochastic formalism relies on the separation of scales, which requires solving the equations for UV modes on top of the […]


Continue.. Numerical simulation of the stochastic formalism including non-Markovianity