Table 1
Properties of the observations and scintillation characteristics for the 15 pulsars with detectable scintillation.
| PSR name (J2000) | DM (pc cm−3) | Period (s) | Station | Date | Length (h) | Δf (kHz) | Δt (s) | Δνd(a) (kHz) | τd(a) (min) | u | tr (day) | α |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| J0034−0721 | 10.9 | 0.943 | FR606 | 2020-10-01 | 1.0 | 5 | 10 | 67.1(5) | – | 67 | – | 5.0(5) |
| J0332+5434 | 26.8 | 0.715 | FR606 | 2020-12-08 | 0.5 | 0.3 | 10 | 0.91(3) | 0.78(0) | 570 | 206 | 4.46(6) |
| J0814+7429 | 5.8 | 1.292 | DE604 | 2017-04-29 | 3.0 | 5 | 10 | 326(16) | 19.3(9) | 30 | 13 | 4.4(7) |
| J0826+2637 | 19.5 | 0.531 | Core | 2019-12-03 | 0.5 | 1 | 5 | 5.28(2) | 0.64(0) | 240 | 26 | 4.1(2) |
| J0837+0610 | 12.9 | 1.274 | DE601 | 2020-01-19 | 2.0 | 5 | 10 | 9.95(4) | 1.79(1) | 174 | 40 | 4.5(1) |
| J0953+0755 | 3.0 | 0.253 | DE601 | 2016-01-04 | 5.0 | 195 | 60 | 916(57) | 18(1) | 18 | 4 | 3.7(6) |
| J1136+1551 | 4.8 | 1.188 | DE601 | 2015-04-10 | 2.0 | 5 | 10 | 6.3(2) | 0.48(0) | 218 | 13 | 4.1(5) |
| J1239+2453 | 9.3 | 1.382 | FR606 | 2020-05-20 | 1.0 | 5 | 10 | 36.6(4) | 2.15(2) | 91 | 14 | 3.2(3) |
| J1607−0032 | 10.7 | 0.422 | FR606 | 2020-09-08 | 1.0 | 1.25 | 10 | 20.8(6) | 6.8(1) | 120 | 137 | 4.6(3) |
| J1921+2153 | 12.4 | 1.337 | DE609 | 2018-08-26 | 1.7 | 5 | 10 | 22.1(1) | 1.1(0) | 116 | 11 | 4.0(3) |
| J1932+1059 | 3.2 | 0.227 | FR606 | 2020-12-30 | 1.0 | 5 | 10 | 59.8(9) | 3.2(1) | 71 | 13 | 4.0(4) |
| J2018+2839 | 14.2 | 0.558 | DE603 | 2019-12-27 | 2.0 | 5 | 10 | – | 4.51(4) | – | – | – |
| FR606 | 2020-12-15 | 1.0 | 0.3 | 10 | 2.9(8) | 3.95(2) | 321 | 632 | 4.2(3) | |||
| J2022+2854 | 24.6 | 0.343 | Core | 2019-12-03 | 0.5 | 1 | 5 | 5.88(4) | 2.05(1) | 226 | 97 | 6.6(3) |
| J2022+5154 | 22.6 | 0.529 | Core | 2019-12-03 | 0.5 | 1 | 5 | 4(5) | – | 280 | – | – |
| J2219+4754 | 43.5 | 0.538 | Core | 2020-01-15 | 0.5 | 0.08 | 5 | 0.23(1) | 0.54(0) | 1142 | 572 | 4.3(2) |
Notes. Given are the pulsar name, dispersion measure, and period; along with the LOFAR station used, the date, and length of the observation; the frequency and time resolution used; and the measured scintillation parameters. We note that u is the scattering strength (see Eq. (5)) and tr is the estimated refractive timescale at LOFAR frequencies (see Eq. (6)). Numbers in brackets denote the formal 1−σ uncertainty in the last digit quoted. (a)The given scintillation bandwidths Δνd and scintillation timescales τd are for a center frequency of 150 MHz and have been measured over the range 120–180 MHz for all but three pulsars: for PSRs J0332+5434 and J2018+2839, the frequency range 140–160 MHz was used; and for PSR J2219+4757, the range 145–155 MHz was used.
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