Pulsars scaled one in 500 thousand

Last crawled date: 4 years, 3 months ago

This post is intended to show pulsar solid body approximate in their size and shape scaled one in 200 thousand and one in 500 thousand. In these scales, you can compare them with small asteroids and moons. This is because pulsars are mostly neutron stars, remnant of massive stars supernovae, more massive than the Sun, compacted to a sphere of a few kilometers in diameter. The word "pulsar" derive from "pulsated star", because their radiation is seen from Earth modulated by pulses. This is because they are spining at high speeds, and their magnetic field distorts their emmited radiation every revolution (several times per second). At these speeds it is spected that the star oblate because of the centrifugal force. To make this oblateness I used MATLAB R2016a with the formula of the Maclaurin and Jacobi ellipsoid considering the neutron star as if has homogeneus density. This could be true for some neutron stars, but a real composition is difficult to known exactly for every case, and it's troubling to simulate, so take the shape of the models in this post as hypothetical. In some of these, the mass and/or the size of the pulsar is unknown. For those cases, I arbitrary choosed a mean mass of 1.4 solar masses, and a mean radius of 10 km. Only for the recently described PSR J0030+045, by Riley (2019), it is ploted with some surface features, which are luminous spots, represented as depressions, only for demostrative purpose.
The file's names explained: name_1_x_10_y.stl is 1 : x * 10y. So _1_6_10_7 is 1:600000000 or one in 60 million.