443 citations · 2k across the 60 of their papers we have counts for
10 papers · 1 filter
High-dimensional inference for the -ray sky with differentiable programming
Siddharth Mishra-Sharma, Tracy R. Slatyer, Yitian Sun +1
We motivate the use of differentiable probabilistic programming techniques in order to account for the large model-space inherent to astrophysical -ray analyses. Targeting the l…
Inferring the Morphology of the Galactic Center Excess with Gaussian Processes
Edward D. Ramirez, Yitian Sun, Matthew R. Buckley +2
Descriptions of the Galactic Center using Fermi gamma-ray data have so far modeled the Galactic Center Excess (GCE) as a template with fixed spatial morphology or as a linear combi…
Maven: A Multimodal Foundation Model for Supernova Science
Gemma Zhang, Thomas Helfer, Alexander T. Gagliano +2
A common setting in astronomy is the availability of a small number of high-quality observations, and larger amounts of either lower-quality observations or synthetic data from sim…
A neural simulation-based inference approach for characterizing the Galactic Center -ray excess
Siddharth Mishra-Sharma, Kyle Cranmer
The nature of the Fermi gamma-ray Galactic Center Excess (GCE) has remained a persistent mystery for over a decade. Although the excess is broadly compatible with emission expected…
Semi-parametric -ray modeling with Gaussian processes and variational inference
Siddharth Mishra-Sharma, Kyle Cranmer
Mismodeling the uncertain, diffuse emission of Galactic origin can seriously bias the characterization of astrophysical gamma-ray data, particularly in the region of the Inner Milk…
Foreground Mismodeling and the Point Source Explanation of the Fermi Galactic Center Excess
Malte Buschmann, Nicholas L. Rodd, Benjamin R. Safdi +4
The Fermi Large Area Telescope has observed an excess of ~GeV energy gamma rays from the center of the Milky Way, which may arise from near-thermal dark matter annihilation. Firmly…
Low-Mass Dark Matter Search with the DarkSide-50 Experiment
The DarkSide Collaboration, P. Agnes, I. F. M. Albuquerque +192
We present the results of a search for dark matter WIMPs in the mass range below 20 GeV/c^2 using a target of low-radioactivity argon. The data were obtained using the DarkSide-50…
Comment on "Characterizing the population of pulsars in the Galactic bulge with the Large Area Telescope" [arXiv:1705.00009v1]
Richard Bartels, Dan Hooper, Tim Linden +4
The -LAT Collaboration recently presented a new catalog of gamma-ray sources located within the region around the Galactic Center~(Aj…
NPTFit: A code package for Non-Poissonian Template Fitting
Siddharth Mishra-Sharma, Nicholas L. Rodd, Benjamin R. Safdi
We present NPTFit, an open-source code package, written in python and cython, for performing non-Poissonian template fits (NPTFs). The NPTF is a recently-developed statistical proc…
Deciphering Contributions to the Extragalactic Gamma-Ray Background from 2 GeV to 2 TeV
Mariangela Lisanti, Siddharth Mishra-Sharma, Lina Necib +1
Astrophysical sources outside the Milky Way, such as active galactic nuclei and star-forming galaxies, leave their imprint on the gamma-ray sky as nearly isotropic emission referre…