A closer look at a supernova confirms simulations that an asymmetric explosion is required to trigger stellar death.
Tag Archives | Supernova
This was brought to my attention by a science loving Disinfonaut.
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Located 38 million light years away in the constellation Dorado, visible in the Southern Hemisphere, the intermediate galaxy NGC 1566 appears to have had a recent supernova. The event was discovered within the last week by researchers in Chile collecting data for the All-Sky Automated Survey for Supernovae (ASASSN).
The supernova candidate, dubbed ASASSN-14ha, cannot readily be seen with the average amateur telescope. To make up for that unfortunate fact, the folks at Slooh Community Observatory will be doing a live broadcast of observations from Pontificia Universidad Católica De Chile (PUC).
“Supernovae are the most violent events in the universe. And among the most useful, since their brightness can help pin down the distance to their parent galaxy,” Slooh astronomer Bob Berman stated in a press release.
This fifth grader is going to be getting a lot of extra credit in science this year. The Royal Astronomical Society of Canada announced the little girl’s discovery of supernova in galaxy UGC 3378 on New Years Eve. Canada’s National Post reports:
Kathryn Aurora Gray is taking her new celebrity in stride after becoming the youngest person to discover a supernova.
The 10-year-old Fredericton girl’s phone has been ringing off the hook since the Royal Astronomical Society of Canada announced her find Monday.
But the amateur astronomer knows — better than anybody, perhaps — that her discovery is fleeting.
“It’s just a blowing-up of stars so eventually it will fade away,” she said of the supernova in an interview.
[Continues at National Post]
From Discovery News:
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The explosions of massive stars may be responsible for the formation of galaxies.
After years of struggling to understand how to properly assemble a galaxy, astronomers have discovered that the answer is blowin’ in the wind. The supernova wind, that is.
New computer simulations show that winds generated by supernovas, which are the explosions of massive stars, can push stars out from the center of a dwarf galaxy. This simulation of supernova winds redistributes both ordinary matter and invisible dark matter in a way that almost perfectly matches observations of the way matter is distributed in actual dwarf galaxies. Fabio Governato of the University of Washington in Seattle and his colleagues describe their simulations in the Jan. 14 Nature.
Previous attempts to model galaxy formation based on the highly successful theory of cold dark matter — which states that invisible material must account for 85 percent of the mass of the universe — have done “an awesome job” of explaining such global properties as where, when and how many galaxies should form, notes Governato.