Items where Author is "<span class="person_name">Ptak, A.</span>"
Number of items: 1.
Article
  • Long-term pulse period evolution of the ultra-luminous X-ray pulsar NGC 7793 P13. (2021) F. Fuerst, D. J. Walton, M. Heida, M. Bachetti, C. Pinto, M. J. Middleton, M. Brightman, H. P. Earnshaw, D. Barret, A. C. Fabian, P. Kretschmar, K. Pottschmidt, A. Ptak, T. Roberts, D. Stern, N. Webb and J. Wilms