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Author: klaurent

Astronomy Papers (Pre-Print)

Lattice Renormalization of Quantum Simulations – on July 2, 2021 at 8:10 am

With advances in quantum computing, new opportunities arise to tackle challenging calculations in quantum field theory. We show that trotterized time-evolution operators can be related by analytic continuation to the …

Astronomy Papers (Pre-Print)

Expediting DECam Multimessenger Counterpart Searches with Convolutional Neural Networks – on June 21, 2021 at 10:00 am

Searches for counterparts to multimessenger events with optical imagers use difference imaging to detect new transient sources. However, even with existing artifact detection algorithms, this process simultaneously returns several classes …

Astronomy Papers (Pre-Print)

Unsupervised Resource Allocation with Graph Neural Networks – on June 17, 2021 at 10:44 am

We present an approach for maximizing a global utility function by learning how to allocate resources in an unsupervised way. We expect interactions between allocation targets to be important and …

Astronomy Papers (Pre-Print)

GRUMPY: a simple framework for realistic forward-modelling of dwarf galaxies – on June 17, 2021 at 10:00 am

We present a simple regulator-type framework designed specifically for modelling formation of dwarf galaxies. We explore sensitivity of model predictions for the stellar mass–halo mass and stellar mass–metallicity relations to …

Astronomy Papers (Pre-Print)

SENSEI: Characterization of Single-Electron Events Using a Skipper-CCD – on June 15, 2021 at 10:01 am

We use a science-grade Skipper Charge Coupled Device (Skipper-CCD) operating in a low-radiation background environment to develop a semi-empirical model that characterizes the origin of single-electron events in CCDs. We …

Astronomy Papers (Pre-Print)

Latest results of ultra-high-energy cosmic ray measurements with prototypes of the Fluorescence detector Array of Single-pixel Telescopes (FAST) – on July 6, 2021 at 3:55 pm

The origin and nature of ultra-high-energy cosmic rays (UHECRs) remain an open question in astroparticle physics. Motivated by the need for an unprecedented aperture for further advancements, the Fluorescence detector …

Astronomy Papers (Pre-Print)

Angular correlations of causally-coherent primordial quantum perturbations – on September 22, 2021 at 5:00 pm

We consider the hypothesis that fundamental symmetries of quantum gravity require correlations of primordial scalar curvature perturbations among world lines to be consistent with causally-coherent entanglement within their inflationary horizons. …

Astronomy Papers (Pre-Print)

SOAR/Goodman Spectroscopic Assessment of Candidate Counterparts of the LIGO–Virgo Event GW190814 – on September 27, 2021 at 1:09 pm

On 2019 August 14 at 21:10:39 UTC, the LIGO/Virgo Collaboration (LVC) detected a possible neutron star-black hole merger (NSBH), the first ever identified. An extensive search for an optical counterpart …

Astronomy Papers (Pre-Print)

SOAR/Goodman Spectroscopic Assessment of Candidate Counterparts of the LIGO–Virgo Event GW190814 – on September 27, 2021 at 1:09 pm

On 2019 August 14 at 21:10:39 UTC, the LIGO/Virgo Collaboration (LVC) detected a possible neutron star-black hole merger (NSBH), the first ever identified. An extensive search for an optical counterpart …

Astronomy Papers (Pre-Print)

Cosmic Reionization on Computers: Evolution of the Flux Power Spectrum – on September 27, 2021 at 10:00 am

We explore the evolution of the flux power spectrum in the Cosmic Reionization On Computers (CROC) simulations. We find that, contrary to some previous studies, the shape of the flux …

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