We report on the high-precision timing of 42 radio millisecond pulsars ( MSPs ) observed by the European Pulsar Timing Array ( EPTA ) .
This EPTA Data Release 1.0 extends up to mid-2014 and baselines range from 7-18 years .
It forms the basis for the stochastic gravitational-wave background , anisotropic background , and continuous-wave limits recently presented by the EPTA elsewhere .
The Bayesian timing analysis performed with TempoNest yields the detection of several new parameters : seven parallaxes , nine proper motions and , in the case of six binary pulsars , an apparent change of the semi-major axis .
We find the NE2001 Galactic electron density model to be a better match to our parallax distances ( after correction from the Lutz-Kelker bias ) than the M2 and M3 models by \citet sch12 .
However , we measure an average uncertainty of 80 % ( fractional ) for NE2001 , three times larger than what is typically assumed in the literature .
We revisit the transverse velocity distribution for a set of 19 isolated and 57 binary MSPs and find no statistical difference between these two populations .
We detect Shapiro delay in the timing residuals of PSRs J1600 - 3053 and J1918 - 0642 , implying pulsar and companion masses m _ { p } = 1.22 _ { -0.35 } ^ { +0.5 } \text { M } _ { \odot } , m _ { c } = 0.21 _ { -0.04 } ^ { +0.06 } \text { M } _ { \odot } and m _ { p } = 1.25 _ { -0.4 } ^ { +0.6 } \text { M } _ { \odot } , m _ { c } = 0.23 _ { -0.05 } ^ { +0.07 } \text { M } _ { \odot } , respectively .
Finally , we use the measurement of the orbital period derivative to set a stringent constraint on the distance to PSRs J1012 + 5307 and J1909 - 3744 , and set limits on the longitude of ascending node through the search of the annual-orbital parallax for PSRs J1600 - 3053 and J1909 - 3744 .