The search for gamma-ray sources coincident with accreting X-ray pulsars has been a long-standing focus of research in astrophysics. Sizing up this population is important because their study provides crucial insights into the physical processes involving relativistic particles and their interaction with energetic photons in environments characterised by high magnetic fields and strong gravity. So far, there are only few associations based on temporal variability, and most associations rely only on spatial coincidence. With the advent of new facilities such as the Cherenkov Telescope Array (CTA), the number of such sources is expected to increase due to improved flux sensitivity and angular resolution. I give an overview of the observational properties of the most representative of the known candidate gamma-ray emitting accreting X-ray neutron stars, and of the proposed mechanisms to explain the gamma-ray emission from these sources.

Brief CV of Dr. Lorenzo Ducci:

Lorenzo Ducci studied physics at the Università Statale di Milano, and obtained his PhD at the Università degli Studi dell'Insubria. He completed both master's and doctoral theses at the INAF IASF-Milano. He then spent about 14 years as a postdoc at the University of Tübingen, the University of Geneva, and then back at the University of Tübingen, where he is currently working. His research interests are mainly in the field of high-energy astrophysics, with particular emphasis on the study of the accretion mechanisms in neutron stars.