First discovery of a magnetic field in a normal delta Scuti star

First discovery of a magnetic field in a normal delta Scuti star

Two types of pulsating stars exist among stars with a mass between 1.5 and 2.5 solar masses: the delta Scuti stars and the gamma Doradus stars. Theory tells us that when such stars have a surface temperature between 12,000 and 12,900° F (6,600 and 7,100° C), they can have both types of pulsations, i.e., they …



Banking X-ray data for the future

Banking X-ray data for the future

  Archives, in their many forms, save information from today that people will want to access and study in the future. This is a critical function of all archives, but it is especially important when it comes to storing data from today’s modern telescopes. NASA’s Chandra X-ray Observatory has collected data for over sixteen years …



New model can measure the mass of pulsars even if they’re all alone

New model can measure the mass of pulsars even if they’re all alone

Measuring the mass of stars, planets and moons in the universe usually relies on studying how their motion relates to other bodies nearby. For some objects that are on their own in space, however, this method is impossible. But research published in the journal Science Advances describes a new technique that could prove useful. Scientists led by the University …



Discovery of white dwarf companions of millisecond pulsars

Discovery of white dwarf companions of millisecond pulsars

 When a star with a mass of roughly ten solar masses finishes its life, it does so in a spectacular explosion known as a supernova, leaving behind as remnant “ash” a neutron star. Neutron stars have masses of one-to-several Suns, but they are tiny in size, only tens of kilometres. Neutron stars spin rapidly, and …