Sentences with phrase «observed microlensing events»
Mike Turner of Fermilab, Chicago, has already pointed out that the observed microlensing events seem to be too rare to fit the idea of a dark halo full of brown dwarfs.
https://www.newscientist.com/ Not exact matches
The team has also found evidence to silence a minority of sceptics who argue that what most astronomers take to be microlensing events are actually caused by natural variations in the intrinsic brightness of the stars being observed.
The Optical Gravitational Lensing Experiment (OGLE) observes millions of stars every night with telescopes in Chile to find microlensing events.
Of the more than 2,600 microlensing events the OGLE team observed and analyzed, six were «ultrashort,» lasting less than half a day — suggesting they were caused by objects somewhere between one and 10 times the Earth's mass.
«WFIRST will make measurements like we have made for OGLE -2005-BLG-169 for virtually all the planetary microlensing events it observes.
Similarly, Yee's team used Spitzer throughout the summer of 2014 for an 100 - hour pilot observing program, during which they studied a microlensing event of interest that had been previously detected by the OGLE survey in February.