Our current understanding of the curved space-time around supermassive black holes is based on actively accreting black holes, which make up only ten per cent or less of the overall population. X-ray observations of that small fraction reveal strong gravitational redshifts that indicate that many of these black holes are rapidly rotating; however, selection biases suggest that these results are not necessarily reflective of...
Tag Archives: event
Relativistic reverberation in the accretion flow of a tidal disruption event
Our current understanding of the curved space-time around supermassive black holes is based on actively accreting black holes, which make up only ten per cent or less of the overall population. X-ray observations of that small fraction reveal strong gravitational redshifts that indicate that many of these black holes are rapidly rotating; however, selection biases suggest that these results are not necessarily reflective of...
Unhappy with Donald Trump, Apple won’t support GOP Convention — but Tim Cook hosting event for Paul Ryan
Donald Trump’s controversial comments throughout the campaign season have unnerved Apple enough to convince the tech company to pull its funding and other support for the Republican National Convention, Politico reported this weekend.
Politico cites...
Event planning software maker Hubb wins $155K investment in Seattle Angel Conference competition
The Seattle...
R-process enrichment from a single event in an ancient dwarf galaxy
Elements heavier than zinc are synthesized through the rapid (r) and slow (s) neutron-capture processes. The main site of production of the r-process elements (such as europium) has been debated for nearly 60 years. Initial studies of trends in chemical abundances in old Milky Way halo stars suggested that these elements are produced continually, in sites such as core-collapse supernovae. But evidence from the...
R-process enrichment from a single event in an ancient dwarf galaxy
Elements heavier than zinc are synthesized through the rapid (r) and slow (s) neutron-capture processes. The main site of production of the r-process elements (such as europium) has been debated for nearly 60 years. Initial studies of trends in chemical abundances in old Milky Way halo stars suggested that these elements are produced continually, in sites such as core-collapse supernovae. But evidence from the...
Liveblog: Apple’s March 21 iPhone and iPad event
(credit: Apple)
Apple's next press event happens on Monday, March 21 at the company's campus in Cupertino, California. We're going to be in the audience to report all of the announcements as they happen.
We've already talked about what to expect, but to recap: Apple is expected to announce a new 4-inch iPhone that combines the size...