The Power of Architecture: Deep Dive into Transformer Architectures for Long-Term Time Series Forecasting

Posted by klaurent Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: Lefei Shen, Lefei Shen, , , | Summary: Transformer-based models have recently become dominant in Long-term Time Series Forecasting (LTSF), yet the variations in their architecture, such as encoder-only, encoder-decoder, and decoder-only designs, raise a crucial question: What Transformer architecture works best for LTSF tasks? However, existing […]


Continue.. The Power of Architecture: Deep Dive into Transformer Architectures for Long-Term Time Series Forecasting

Supersonic Turbulence in Primordial Halos: A Comparison With and Without The Stream Velocity

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Avi Chen, Avi Chen, , , | Summary: Turbulence plays a critical role in regulating star formation in molecular clouds and is also observed in simulations of primordial halos that host Population III (Pop III) stars. The relative velocity between baryons and dark matter at the time […]


Continue.. Supersonic Turbulence in Primordial Halos: A Comparison With and Without The Stream Velocity

NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

Posted by klaurent Stanford

Kavli Affiliate: Aaron Roodman | First 5 Authors: Colin Orion Chandler, Colin Orion Chandler, , , | Summary: We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS), with the NSF-DOE Vera C. Rubin Observatory. The third interstellar object, comet 3I/ATLAS, was […]


Continue.. NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

The Physical Origin and Time Lag of Multi-Frequency Flares from SgrA*

Posted by klaurent Peking

Kavli Affiliate: Feng Yuan | First 5 Authors: Hong-Xuan Jiang, Hong-Xuan Jiang, , , | Summary: Sagittarius~A$^*$, the supermassive black hole at the center of our galaxy, exhibits flares across various wavelengths, yet their origins remain elusive. We performed 3D two-temperature General Relativistic Magnetohydrodynamic (GRMHD) simulations of magnetized accretion flows initialized from multi-loop magnetic field […]


Continue.. The Physical Origin and Time Lag of Multi-Frequency Flares from SgrA*

BASS LIII: The Eddington Ratio as the Primary Regulator of the Fraction of X-ray Emission in Active Galactic Nuclei

Posted by klaurent Peking

Kavli Affiliate: Claudio Ricci | First 5 Authors: Kriti Kamal Gupta, Kriti Kamal Gupta, , , | Summary: Active galactic nuclei (AGN) emit radiation via accretion across the entire energy spectrum. While the standard disk and corona model can somewhat describe this emission, it fails to predict specific features such as the soft X-ray excess, […]


Continue.. BASS LIII: The Eddington Ratio as the Primary Regulator of the Fraction of X-ray Emission in Active Galactic Nuclei

A model-agnostic likelihood for the reinterpretation of the $boldsymbolB^+to K^+ νbarν$ measurement at Belle II

Posted by klaurent Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, Belle II Collaboration, , , | Summary: We recently measured the branching fraction of the $B^+rightarrow K^+nubarnu$ decay using 362 fb$^-1$ of on-resonance $e^+e^-$ collision data, under the assumption of Standard Model kinematics, providing the first evidence for this decay. To facilitate future reinterpretations […]


Continue.. A model-agnostic likelihood for the reinterpretation of the $boldsymbolB^+to K^+ νbarν$ measurement at Belle II

Do Cosmic String Segments Emit Gravitational Waves?

Posted by klaurent Tokyo

Kavli Affiliate: Satoshi Shirai | First 5 Authors: Akifumi Chitose, Akifumi Chitose, , , | Summary: Cosmic strings are predicted in various extensions of the Standard Model, including grand unified theories. Depending on the symmetry-breaking pattern, they can be either topologically stable or metastable. Intriguingly, metastable strings have been proposed as a possible origin of […]


Continue.. Do Cosmic String Segments Emit Gravitational Waves?

First Constraints from Marked Angular Power Spectra with Subaru Hyper Suprime-Cam Survey First-Year Data

Posted by klaurent Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Jessica A. Cowell, Jessica A. Cowell, , , | Summary: We present the first application of marked angular power spectra to weak lensing data, using maps from the Subaru Hyper Suprime-Cam Year 1 (HSC-Y1) survey. Marked convergence fields, constructed by weighting the convergence field with non-linear functions […]


Continue.. First Constraints from Marked Angular Power Spectra with Subaru Hyper Suprime-Cam Survey First-Year Data

Hidden diffeos in the Hamiltonian formulation of a background independent field theory

Posted by klaurent MIT

Kavli Affiliate: J. S. Villasenor | First 5 Authors: J. Fernando Barbero G., J. Fernando Barbero G., , , | Summary: We analyze from a geometric perspective the Hamiltonian formulation of a recent modification of the Husain-Kuchavr model where, while preserving the connection as a dynamical variable, the other field is restricted to be the […]


Continue.. Hidden diffeos in the Hamiltonian formulation of a background independent field theory

High-redshift AGN population in radiation-hydrodynamics simulations

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Teodora-Elena Bulichi, Teodora-Elena Bulichi, , , | Summary: High-redshift active galactic nuclei (AGN) have long been recognized as key probes of early black hole growth and galaxy evolution. However, modeling this population remains difficult due to the wide range of luminosities and black hole masses involved, and […]


Continue.. High-redshift AGN population in radiation-hydrodynamics simulations