Abstract

By simulating the evolution of spin periods of magnetized neutron stars which interact with their environment in binary systems, we investigate the Galactic population of high mass X-ray binaries (HMXBs). The number of HMXBs in the Galaxy is between 190 and 240, and their birthrate is from 5.9 × 10−5 yr−1 to 6.3 × 10−5 yr−1. Comparing the Corbet diagram (the positions of the spin periods vs. the orbital periods of HMXBs) in our model with the associated observations, we find that the stellar wind structure and the process of matter transfer are very important for understanding HMXBs.

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