Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Jack Singal"'
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 130 (2024)
We present results exploring the role that probabilistic deep learning models can play in cosmology from large-scale astronomical surveys through photometric redshift (photo- z ) estimation. Photo- z uncertainty estimates are critical for the science
Externí odkaz:
https://doaj.org/article/d2846b3e25884afd87638d3a9ff4357f
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 509(1), 114-121. Oxford University Press
We present the first targeted measurement of the power spectrum of anisotropies of the radio synchrotron background, at 140 MHz where it is the overwhelmingly dominant photon background. This measurement is important for understanding the background
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87d581956b781f0b11f003b3692ba5dc
https://research.rug.nl/en/publications/dab62434-e2e6-4f7b-9783-1450da873997
https://research.rug.nl/en/publications/dab62434-e2e6-4f7b-9783-1450da873997
Autor:
Jack Singal
It has recently become apparent that the background level of diffuse radio emission on the sky is significantly higher than the level that can result from known extragalactic radio source classes or our Galaxy given our current understanding of its l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a5023363e347683a21de0908f535195
http://arxiv.org/abs/1911.12881
http://arxiv.org/abs/1911.12881
Autor:
Jack Singal, M. Wyatt
Publikováno v:
Publications of the Astronomical Society of the Pacific. 133:044504
We present results of using individual galaxies' probability distribution over redshift as a method of identifying potential catastrophic outliers in empirical photometric redshift estimation. In the course of developing this approach we develop a me
Autor:
K. I. Kellermann, Elena Orlando, J. Dowell, Tessa Vernstrom, Dale J. Fixsen, B. Harms, Jack Singal, Eric J. Murphy, J. Haider, David R. Ballantyne, Marco Ajello, James J. Condon, E. Bunn, Philipp Mertsch, R. Monsalve, Tim Linden, Nicolao Fornengo, Alan J. Kogut, Evan Jones, Douglas Scott, Marco Regis, L. Xu, Gilbert Holder
We summarize the radio synchrotron background workshop that took place July 19-21, 2017 at the University of Richmond. This first scientific meeting dedicated to the topic was convened because current measurements of the diffuse radio monopole reveal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f67477a5601cc871129a4744115269f2
http://hdl.handle.net/2318/1696671
http://hdl.handle.net/2318/1696671
Autor:
Evan Jones, Jack Singal
We present results of using individual galaxies' redshift probability information derived from a photometric redshift (photo-z) algorithm, SPIDERz, to identify potential catastrophic outliers in photometric redshift determinations. By using two test
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3227c9a5f7f8364e9793075e8166884c
http://arxiv.org/abs/1709.01576
http://arxiv.org/abs/1709.01576
Publikováno v:
The Astrophysical Journal. 877:63
We explore the general question of correlations among different waveband luminosities in a flux-limited multiband observational data set. Such correlations, often observed for astronomical sources, may be either intrinsic or induced by the redshift e
Publikováno v:
Proceedings of the International Astronomical Union. 9:149-152
We discuss an analysis of the redshift evolutions and distributions of the gamma-ray luminosity and photon spectral index of flat spectrum radio quasar (FSRQ) type blazars. We utilize data from the Fermi Gamma-ray Space Telescope, with redshfits as d
Publikováno v:
Proceedings of the International Astronomical Union. 7:248-252
Gamma-ray bursts (GRBs) observed up to redshifts z > 9.3 are fascinating objects to study due to their still unexplained relativistic outburst mechanisms and a possible use to test cosmological models. Our analysis of all GRB afterglows with known re
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 409:1172-1182
We investigate different scenarios for the origin of the extragalactic radio background. The surface brightness of the background, as reported by the ARCADE 2 collaboration, is several times higher than that which would result from currently observed