Editing Terrestrial Time (section)

=== Pulsars ===

Researchers from the [[International Pulsar Timing Array]] collaboration have created a realization TT(IPTA16) of TT based on observations of an ensemble of [[rotation-powered pulsar#History|pulsar]]s up to 2012. This new pulsar time scale is an independent means of computing TT. The researchers observed that their scale was within 0.5 microseconds of TT(BIPM17), with significantly lower errors since 2003. The data used was insufficient to analyze long-term stability, and contained several anomalies, but as more data is collected and analyzed, this realization may eventually be useful to identify defects in TAI and TT(BIPM).<ref>{{Cite journal|arxiv = 1910.13628|doi = 10.1093/mnras/stz3071|doi-access=free|title = A pulsar-based time-scale from the International Pulsar Timing Array|year = 2020|last1 = Hobbs|first1 = G.|last2 = Guo|first2 = L.|last3 = Caballero|first3 = R. N.|last4 = Coles|first4 = W.|last5 = Lee|first5 = K. J.|last6 = Manchester|first6 = R. N.|last7 = Reardon|first7 = D. J.|last8 = Matsakis|first8 = D.|last9 = Tong|first9 = M. L.|last10 = Arzoumanian|first10 = Z.|last11 = Bailes|first11 = M.|last12 = Bassa|first12 = C. G.|last13 = Bhat|first13 = N D R.|last14 = Brazier|first14 = A.|last15 = Burke-Spolaor|first15 = S.|last16 = Champion|first16 = D. J.|last17 = Chatterjee|first17 = S.|last18 = Cognard|first18 = I.|last19 = Dai|first19 = S.|last20 = Desvignes|first20 = G.|last21 = Dolch|first21 = T.|last22 = Ferdman|first22 = R. D.|last23 = Graikou|first23 = E.|last24 = Guillemot|first24 = L.|last25 = Janssen|first25 = G. H.|last26 = Keith|first26 = M. J.|last27 = Kerr|first27 = M.|last28 = Kramer|first28 = M.|last29 = Lam|first29 = M. T.|last30 = Liu|first30 = K.|journal = Monthly Notices of the Royal Astronomical Society|volume = 491|issue = 4|pages = 5951–5965|bibcode = 2020MNRAS.491.5951H|s2cid = 204961320|display-authors = 29}}</ref>