Supernova

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Synopsis: Domenii: Space: Space generale: Celestial body: Star: Supernova:

#Star collision may explain the lonely supernova University of Warwick rightoriginal Studyposted by Tom Frew-Warwick on August 11 2014 A massive collision between white dwarf

but still in some sort of binary systems as there is no known way that a single low-mass star can go supernova by itself

or create an event that would look like a supernova. he researchers then compared their data to

when a massive star goes supernova. The mechanism of the supernova explosion causes the neutron star to be kicked to very high velocities (100s of km/s). This high velocity system can then escape its galaxy

and if the binary system survives the kick the white dwarf and neutron star will merge causing the explosive transient. he researchers who say such merging systems of white dwarfs

With hot gas still expanding at high speeds after the explosion a supernova remnant is a harsh hot and hostile environment

#Supernova find backs dark energy and universe expansion Astronomers have had long a dark secret: one of the cornerstones of the Nobel prizewinning discovery that the expansion of the universe is accelerating had never been tested directly.

when Steve Fossey of University college London and his students stumbled upon a type IA supernova in M82 or the Cigar galaxy.

It also accounts for complex phenomena such as cooling gas star formation supernova explosions and supermassive black holes pulling in material that gets too Close to run the simulation the team used several supercomputers in Europe and the US each

#Supernova found aligned with galactic magnifying glass A perfectly arranged exploding star and distant galaxy have created together a cosmic magnifying glass that could improve our understanding of the universe's expansion and dark matter.

Sometimes when a white dwarf star dies it explodes as a type 1a supernova. All supernovae in this class reach a very specific colour and peak brightness creating

whether and by how much the light from the supernova is being messed with by other things like nearby galaxies or the expansion of the universe.

For example the gravity from a massive object like a galaxy can magnify light from another object like a supernova bending its light waves

Now a team led by Robert Quimby at the University of Tokyo Japan has confirmed the first case of this lensing effect in a type 1a supernova:

The supernova PS1-10afx was discovered in 2010 using the Pan starrs telescope in Hawaii. Because it was so much brighter than normal it sparked controversy over

whether it was a new type of supernova or was being magnified by a gravitational lens.

and after the supernova and none of these showed obvious signs of a foreground object says Quimby.

Now his team has found a galaxy full of dim old stars that was hard to see against the bright background of the galaxy holding the supernova.

They calculate that it is the right size to make a normal type 1a supernova look about 30 times brighter about the same as the apparent brightness of PS1-10afx.

Some researchers have suggested that an unknown supernova might be responsible for a red crucifix in the sky recorded in the Anglo-saxon Chronicle a history of Anglo-saxon life compiled by anonymous scribes.

weeks or even months before supernovas or gamma ray bursts, looking for interesting precursor events. That will be an interesting piece of kit. vryscope systems o er a new capability:

the dense remnant of a massive star pulverized in a supernova explosion. The neutron star is in orbit with another massive star

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