Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Juri Poutanen, Sergey S. Tsygankov, Victor Doroshenko, Sofia V. Forsblom, Peter Jenke | Summary: Discovery of pulsations from a number of ULXs proved that accretion onto neutron stars can produce luminosities exceeding the Eddington limit by several orders of magnitude. The conditions necessary to achieve such […]


Continue.. Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Juri Poutanen, Sergey S. Tsygankov, Victor Doroshenko, Sofia V. Forsblom, Peter Jenke | Summary: Discovery of pulsations from a number of ultra-luminous X-ray (ULX) sources proved that accretion onto neutron stars can produce luminosities exceeding the Eddington limit by a couple of orders of magnitude. The […]


Continue.. Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Juri Poutanen, Sergey S. Tsygankov, Victor Doroshenko, Sofia V. Forsblom, Peter Jenke | Summary: Discovery of pulsations from a number of ultra-luminous X-ray (ULX) sources proved that accretion onto neutron stars can produce luminosities exceeding the Eddington limit by a couple of orders of magnitude. The […]


Continue.. Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

On the contribution of dwarf galaxies to reionization of the Universe

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Zewei Wu, Andrey Kravtsov, , , | Summary: We present estimates of the ultraviolet (UV) and Lyman continuum flux density contributed by galaxies of luminosities from $M_{rm UV}approx -25$ to $M_{rm UV}=-4$ at redshifts $5leq zleq 10$ using a galaxy formation model that reproduces properties of local […]


Continue.. On the contribution of dwarf galaxies to reionization of the Universe

On the contribution of dwarf galaxies to reionization of the Universe

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Zewei Wu, Andrey Kravtsov, , , | Summary: We present estimates of the ultraviolet (UV) and Lyman continuum flux density contributed by galaxies of luminosities from $M_{rm UV}approx -25$ to $M_{rm UV}=-4$ at redshifts $5leq zleq 10$ using a galaxy formation model that reproduces properties of local […]


Continue.. On the contribution of dwarf galaxies to reionization of the Universe

On the contribution of dwarf galaxies to reionization of the Universe

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Zewei Wu, Andrey Kravtsov, , , | Summary: We present estimates of the ultraviolet (UV) and Lyman continuum flux density contributed by galaxies of luminosities from $M_{rm UV}approx -25$ to $M_{rm UV}=-4$ at redshifts $5leq zleq 10$ using a galaxy formation model that reproduces properties of local […]


Continue.. On the contribution of dwarf galaxies to reionization of the Universe

The oldest stars with low neutron-capture element abundances and origins in ancient dwarf galaxies

Kavli Affiliate: Anna Frebel | First 5 Authors: Hillary Diane Andales, Ananda Santos Figueiredo, Casey Gordon Fienberg, Mohammad K. Mardini, Anna Frebel | Summary: We present a detailed chemical abundance and kinematic analysis of six extremely metal-poor ($-4.2 leq$ [Fe/H] $leq-$2.9) halo stars with very low neutron-capture abundances ([Sr/H] and [Ba/H]) based on high-resolution Magellan/MIKE […]


Continue.. The oldest stars with low neutron-capture element abundances and origins in ancient dwarf galaxies

Localizing Task Information for Improved Model Merging and Compression

Kavli Affiliate: Ke Wang | First 5 Authors: Ke Wang, Nikolaos Dimitriadis, Guillermo Ortiz-Jimenez, François Fleuret, Pascal Frossard | Summary: Model merging and task arithmetic have emerged as promising scalable approaches to merge multiple single-task checkpoints to one multi-task model, but their applicability is reduced by significant performance loss. Previous works have linked these drops […]


Continue.. Localizing Task Information for Improved Model Merging and Compression

Long term variability of Cygnus X-1. VIII. A spectral-timing look at low energies with NICER

Kavli Affiliate: Erin Kara | First 5 Authors: Ole König, Guglielmo Mastroserio, Thomas Dauser, Mariano Méndez, Jingyi Wang | Summary: The Neutron Star Interior Composition Explorer (NICER) monitoring campaign of Cyg X-1 allows us to study its spectral-timing behavior at energies ${<}1$ keV across all states. The hard state power spectrum can be decomposed into […]


Continue.. Long term variability of Cygnus X-1. VIII. A spectral-timing look at low energies with NICER

MoCo: Fuzzing Deep Learning Libraries via Assembling Code

Kavli Affiliate: Jia Liu | First 5 Authors: Pin Ji, Yang Feng, Duo Wu, Lingyue Yan, Pengling Chen | Summary: The rapidly developing deep learning (DL) techniques have been applied in software systems with various application scenarios. However, they could also pose new safety threats with potentially serious consequences, especially in safety-critical domains. DL libraries […]


Continue.. MoCo: Fuzzing Deep Learning Libraries via Assembling Code