Spacebuzz

Blog posts tagged with gravitational lensing

Posts in the past four weeks

Friday
May 27 2016
03:59 UTC

computational science, microlensing, and etc

In the morning I gave an informal talk at the Simons SCDA, about my work on The Cannon, and my issues (both good things and bad things) with machine learning. I discussed the point (which inspires our ABC research, and which I also discussed with Kravtsov at Chicago) that quantitative natural science is now almost entirely computational—meaning that the theory is a simulation that makes artificial data—and this leads to changes in how we do inference and speak about realities. In the

Posted by Hogg's Research

Friday
May 27 2016
03:00 UTC

A galactic gathering

MACS J1149. 5+2223Credit: ESA/Hubble & NASA Acknowledgement: Judy Schmidt (Geckzilla)Nearly as deep as the Hubble Ultra Deep Field, which contains approximately 10 000 galaxies, this incredible image from the NASA/ESA Space Telescope reveals thousands of colourful galaxies in the constellation of Leo (The Lion). This vibrant view of the early Universe was captured as part of the Frontier Fields campaign, which aims to investigate galaxy clusters in more detail than ever before, and to ex

Posted by astronomy cmarchesin

Thursday
May 26 2016
03:59 UTC

new discoveries in the K2 data!

At group meeting, Dun Wang showed new discoveries in the brand-new K2 Campaign 9 data. The K2 team released the data the moment it came off the s/c, in fact before they even ran their own data-reformatting code. This was no problem for us, because K2 god Geert Barentsen (Ames) has (clean-roomed? and) open-sourced some of the core code. Wang ran our image-prediction / image-differencing version of our CPM code to predict the data and identify sources with strange excursions. He found ones that lo

Posted by Hogg's Research

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