Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Rowe, Barnaby"'
Autor:
Rowe, Barnaby
We describe an approach to improving model fitting and model generalization that considers the entropy of distributions of modelling residuals. We use simple simulations to demonstrate the observational signatures of overfitting on ordered sequences
Externí odkaz:
http://arxiv.org/abs/1907.03888
Autor:
Lacy, Mark, Mason, Brian, Sarazin, Craig, Chatterjee, Suchetana, Nyland, Kristina, Kimball, Amy, Rocha, Graca, Rowe, Barnaby, Surace, Jason
The nature and energetics of feedback from thermal winds in quasars can be constrained via observations of the Sunyaev-Zeldovich Effect (SZE) induced by the bubble of thermal plasma blown into the intergalactic medium by the quasar wind. In this lett
Externí odkaz:
http://arxiv.org/abs/1811.05023
Autor:
Shapiro, Charles, Smith, Roger, Huff, Eric, Plazas, Andrés A., Rhodes, Jason, Fucik, Jason, Goodsall, Tim, Massey, Richard, Rowe, Barnaby, Seshadri, Suresh
Publikováno v:
J. Astron. Telesc. Instrum. Syst. 5(4), 041503 (2019)
As astronomical observations from space benefit from improved sensitivity, the effectiveness of scientific programs is becoming limited by systematics that often originate in poorly understood image sensor behavior. Traditional, bottom-up detector ch
Externí odkaz:
http://arxiv.org/abs/1801.06599
Autor:
Gruen, Daniel, Bernstein, Gary M., Jarvis, Mike, Rowe, Barnaby, Vikram, Vinu, Plazas, Andrés A., Seitz, Stella
Publikováno v:
Journal of Instrumentation, 10, 05, C05032 (2015)
Interaction of charges in CCDs with the already accumulated charge distribution causes both a flux dependence of the point-spread function (an increase of observed size with flux, also known as the brighter/fatter effect) and pixel-to-pixel correlati
Externí odkaz:
http://arxiv.org/abs/1501.02802
Autor:
Mandelbaum, Rachel, Rowe, Barnaby, Armstrong, Robert, Bard, Deborah, Bertin, Emmanuel, Bosch, James, Boutigny, Dominique, Courbin, Frederic, Dawson, William A., Donnarumma, Annamaria, Conti, Ian Fenech, Gavazzi, Raphael, Gentile, Marc, Gill, Mandeep S. S., Hogg, David W., Huff, Eric M., Jee, M. James, Kacprzak, Tomasz, Kilbinger, Martin, Kuntzer, Thibault, Lang, Dustin, Luo, Wentao, March, Marisa C., Marshall, Philip J., Meyers, Joshua E., Miller, Lance, Miyatake, Hironao, Nakajima, Reiko, Mboula, Fred Maurice Ngole, Nurbaeva, Guldariya, Okura, Yuki, Paulin-Henriksson, Stephane, Rhodes, Jason, Schneider, Michael D., Shan, Huanyuan, Sheldon, Erin S., Simet, Melanie, Starck, Jean-Luc, Sureau, Florent, Tewes, Malte, Adami, Kristian Zarb, Zhang, Jun, Zuntz, Joe
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2015, 450 (3): 2963-3007
We present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, the third in a sequence of challenges for testing methods of inferring weak gravitational lensing shear distortions from simulated galaxy images. GREAT
Externí odkaz:
http://arxiv.org/abs/1412.1825
Autor:
Rowe, Barnaby Thomas Peter
Modern cosmology has reached an important juncture, at which the ability to make measurements of unprecedented accuracy has led to conclusions that are a fundamental challenge to natural science. The discovery that, in our current best model, the dyn
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.562302
Autor:
Ford, Jes, Van Waerbeke, Ludovic, Milkeraitis, Martha, Laigle, Clotilde, Hildebrandt, Hendrik, Erben, Thomas, Heymans, Catherine, Hoekstra, Henk, Kitching, Thomas, Mellier, Yannick, Miller, Lance, Choi, Ami, Coupon, Jean, Fu, Liping, Hudson, Michael J., Kuijken, Konrad, Robertson, Naomi, Rowe, Barnaby, Schrabback, Tim, Velander, Malin
We present the cluster mass-richness scaling relation calibrated by a weak lensing analysis of >18000 galaxy cluster candidates in the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). Detected using the 3D-Matched-Filter cluster-finder of Mi
Externí odkaz:
http://arxiv.org/abs/1409.3571
Autor:
Rowe, Barnaby, Jarvis, Mike, Mandelbaum, Rachel, Bernstein, Gary M., Bosch, James, Simet, Melanie, Meyers, Joshua E., Kacprzak, Tomasz, Nakajima, Reiko, Zuntz, Joe, Miyatake, Hironao, Dietrich, Joerg P., Armstrong, Robert, Melchior, Peter, Gill, Mandeep S. S.
GALSIM is a collaborative, open-source project aimed at providing an image simulation tool of enduring benefit to the astronomical community. It provides a software library for generating images of astronomical objects such as stars and galaxies in a
Externí odkaz:
http://arxiv.org/abs/1407.7676
Autor:
Fu, Liping, Kilbinger, Martin, Erben, Thomas, Heymans, Catherine, Hildebrandt, Hendrik, Hoekstra, Henk, Kitching, Thomas D., Mellier, Yannick, Miller, Lance, Semboloni, Elisabetta, Simon, Patrick, Van Waerbeke, Ludovic, Coupon, Jean, Harnois-Déraps, Joachim, Hudson, Michael J., Kuijken, Konrad, Rowe, Barnaby, Schrabback, Tim, Vafaei, Sanaz, Velander, Malin
Higher-order, non-Gaussian aspects of the large-scale structure carry valuable information on structure formation and cosmology, which is complementary to second-order statistics. In this work we measure second- and third-order weak-lensing aperture-
Externí odkaz:
http://arxiv.org/abs/1404.5469
The GRavitational lEnsing Accuracy Testing 3 (GREAT3) challenge is an image analysis competition that aims to test algorithms to measure weak gravitational lensing from astronomical images. The challenge started in October 2013 and ends 30 April 2014
Externí odkaz:
http://arxiv.org/abs/1404.1593