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Predefined spatial templates to describe the background of $\gamma$-ray emission from astrophysical processes, like cosmic ray interactions, are used in previous searches for the $\gamma$-ray signatures of annihilating galactic dark matter. In this p
Externí odkaz:
http://arxiv.org/abs/1511.09015
Publikováno v:
JCAP 1604 (2016) no.04, 030
Previous searches for the $\gamma$-ray signatures of annihilating galactic dark matter used predefined spatial templates to describe the background of $\gamma$-ray emission from astrophysical processes like cosmic ray interactions. In this work, we a
Externí odkaz:
http://arxiv.org/abs/1511.02621
Autor:
Vacca, Valentina, Oppermann, Niels, Ensslin, Torsten, Selig, Marco, Junklewitz, Henrik, Greiner, Maksim, Jasche, Jens, Hales, Christopher, Reinecke, Martin, Carretti, Ettore, Feretti, Luigina, Ferrari, Chiara, Giovannini, Gabriele, Govoni, Federica, Horellou, Cathy, Ideguchi, Shinsuke, Johnston-Hollitt, Melanie, Murgia, Matteo, Paladino, Rosita, Pizzo, Roberto Francesco, Anna, Scaife
To better understand the origin and properties of cosmological magnetic fields, a detailed knowledge of magnetic fields in the large-scale structure of the Universe (galaxy clusters, filaments) is crucial. We propose a new statistical approach to stu
Externí odkaz:
http://arxiv.org/abs/1501.00415
Autor:
Selig, Marco
Publikováno v:
AIP Conf. Proc. 1636, 68 (2014)
We introduce NIFTY, "Numerical Information Field Theory", a software package for the development of Bayesian signal inference algorithms that operate independently from any underlying spatial grid and its resolution. A large number of Bayesian and Ma
Externí odkaz:
http://arxiv.org/abs/1412.7160
Publikováno v:
PhysRevE 91, 013311 (2015)
The calibration of a measurement device is crucial for every scientific experiment, where a signal has to be inferred from data. We present CURE, the calibration uncertainty renormalized estimator, to reconstruct a signal and simultaneously the instr
Externí odkaz:
http://arxiv.org/abs/1410.6289
Publikováno v:
A&A 581, A126 (2015)
We analyze the 6.5yr all-sky data from the Fermi LAT restricted to gamma-ray photons with energies between 0.6-307.2GeV. Raw count maps show a superposition of diffuse and point-like emission structures and are subject to shot noise and instrumental
Externí odkaz:
http://arxiv.org/abs/1410.4562
Response calibration is the process of inferring how much the measured data depend on the signal one is interested in. It is essential for any quantitative signal estimation on the basis of the data. Here, we investigate self-calibration methods for
Externí odkaz:
http://arxiv.org/abs/1312.1349
Autor:
Selig, Marco, Enßlin, Torsten
Publikováno v:
A&A 574, A74 (2015)
The analysis of astronomical images is a non-trivial task. The D3PO algorithm addresses the inference problem of denoising, deconvolving, and decomposing photon observations. Its primary goal is the simultaneous but individual reconstruction of the d
Externí odkaz:
http://arxiv.org/abs/1311.1888