Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an ensemble of galactic millisecond radio pulsars. With the second data release of the European Pulsar Timing Array, we focus on the most robust scenario, in which dark matter interacts only gravitationally with ordinary baryonic matter. Our results show that ultralight particles with masses 10-24.0 eV 10-23.3 eV cannot constitute 100% of the measured local dark matter density, but can have at most local density ρ 0.3 GeV/cm3.
Second Data Release from the European Pulsar Timing Array: Challenging the Ultralight Dark Matter Paradigm / Smarra, Clemente; Goncharov, Boris; Barausse, Enrico; Antoniadis, J.; Babak, S.; Nielsen, A. -S. Bak; Bassa, C. G.; Berthereau, A.; Bonetti, M.; Bortolas, E.; Brook, P. R.; Burgay, M.; Caballero, R. N.; Chalumeau, A.; Champion, D. J.; Chanlaridis, S.; Chen, S.; Cognard, I.; Desvignes, G.; Falxa, M.; Ferdman, R. D.; Franchini, A.; Gair, J. R.; Graikou, E.; Grießmeier, J. -M.; Guillemot, L.; Guo, Y. J.; Hu, H.; Iraci, F.; Izquierdo-Villalba, D.; Jang, J.; Jawor, J.; Janssen, G. H.; Jessner, A.; Karuppusamy, R.; Keane, E. F.; Keith, M. J.; Kramer, M.; Krishnakumar, M. A.; Lackeos, K.; Lee, K. J.; Liu, K.; Liu, Y.; Lyne, A. G.; Mckee, J. W.; Main, R. A.; Mickaliger, M. B.; Niţu, I. C.; Parthasarathy, A.; Perera, B. B. P.; Perrodin, D.; Petiteau, A.; Porayko, N. K.; Possenti, A.; Leclere, H. Quelquejay; Samajdar, A.; Sanidas, S. A.; Sesana, A.; Shaifullah, G.; Speri, L.; Spiewak, R.; Stappers, B. W.; Susarla, S. C.; Theureau, G.; Tiburzi, C.; van der Wateren, E.; Vecchio, A.; Krishnan, V. Venkatraman; Wang, J.; Wang, L.; Wu, Z.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 131:17(2023). [10.1103/PhysRevLett.131.171001]
Second Data Release from the European Pulsar Timing Array: Challenging the Ultralight Dark Matter Paradigm
Smarra, Clemente;Barausse, Enrico;
2023-01-01
Abstract
Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an ensemble of galactic millisecond radio pulsars. With the second data release of the European Pulsar Timing Array, we focus on the most robust scenario, in which dark matter interacts only gravitationally with ordinary baryonic matter. Our results show that ultralight particles with masses 10-24.0 eV 10-23.3 eV cannot constitute 100% of the measured local dark matter density, but can have at most local density ρ 0.3 GeV/cm3.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
