In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: The first extrasolar planet to be definitively confirmed was found orbiting one of these objects by Alexander Wolszczan. One subclass of them is also known as the "recycled" type, and the Hulse-Taylor binary one provided the first observational evidence of gravity waves. Roche lobe overflow leads to the accretion-powered ones that emit x-rays, while the decay of a strong magnetic field powers the magnetar class. Glitches can occur in the originally discovered type of these objects, whose misalignment of rotation and magnetic axes is responsible for their most prominent feature. For 10 points, name these rotating neutron stars that regularly emit radiation.
A:
Science