Double Explosion Heralds The Death Of A Massive StarNews Staff
“That is pretty fast and at the extreme end of how fast we think a neutron star can be moving, even if it got a kick from the supernova explosion,” Banovetz said. “More recent investigations call into question whether the object is actually the surviving neutron star of ...
To establish a link between the explosion of CCSNe and the late-time evolution of massive stars, it is necessary to capture the first-light signals of the SN explosions, i.e., the flashed spectra [2], due to ionization of the circumstellar material (CSM)/stellar wind by ultraviolet/high...
Here we present a new event, SN2016aps, offset from the centre of a low-mass galaxy, that radiated ≳5 × 1051 erg, necessitating a hyper-energetic supernova explosion. We find a total (supernova ejecta + CSM) mass likely exceeding 50−100 M⊙, with energy ≳1052...
Observations of an event (several energetic eruptions leading to a terminal explosion that is surprisingly hydrogen-rich) with the spectrum of a supernova do not match with other observations of supernovae. Thousands of 'core-collapse' supernovae have be
the fact that it involves isotopes and not elements. Ratios of elements would have contributions from multiple stellar processes, while the60Fe/26Al ratio provides a direct connection to the evolution of the massive star, stellar winds, and supernova explosion mechanisms. In fact, because the ...
and the rest of the matter spirals down onto the neutron star. There, it accumulates as a layer on the surface. As more and more material rains down onto the neutron star, the gravitational field compresses it until a runaway nuclear explosion is initiated. This creates a cataclysmic eve...
corresponding to <5% variability over a 6-month period in the frame of the object. This conclusively shows that our observed broad component cannot be the product of a recent supernova explosion in the galaxy. We also rule out the possibility that the broad-line component may be attributed to...
The Cubs broke things open after that, scoring a run on Nico Hoerner's double and another when Crow-Armstrong grounded out to second. Chicago ultimately won because of that late-game explosion, holding onto a 6-3 victory. However, the story coming out of this contest is the incredible defe...
{ini}} \gtrsim 8\)M⊙, end their lives as a violent supernova explosion before forming a neutron star or black hole. Hence massive stars are an important driver of feedback to their host galaxy (Bromm et al.2009; de Rossi et al.2010). In addition, during their lives massive stars ...