2016A&A...586A..92P

Query : 2016A&A...586A..92P

2016A&A...586A..92P - Astronomy and Astrophysics, volume 586A, 92-92 (2016/2-1)

Wide-band, low-frequency pulse profiles of 100 radio pulsars with LOFAR.

PILIA M., HESSELS J.W.T., STAPPERS B.W., KONDRATIEV V.I., KRAMER M., VAN LEEUWEN J., WELTEVREDE P., LYNE A.G., ZAGKOURIS K., HASSALL T.E., BILOUS A.V., BRETON R.P., FALCKE H., GRIESSMEIER J.-M., KEANE E., KARASTERGIOU A., KUNIYOSHI M., NOUTSOS A., OSLOWSKI S., SERYLAK M., SOBEY C., TER VEEN S., ALEXOV A., ANDERSON J., ASGEKAR A., AVRUCH I.M., BELL M.E., BENTUM M.J., BERNARDI G., BIRZAN L., BONAFEDE A., BREITLING F., BRODERICK J.W., BRUEGGEN M., CIARDI B., CORBEL S., DE GEUS E., DE JONG A., DELLER A., DUSCHA S., EISLOEFFEL J., FALLOWS R.A., FENDER R., FERRARI C., FRIESWIJK W., GARRETT M.A., GUNST A.W., HAMAKER J.P., HEALD G., HORNEFFER A., JONKER P., JUETTE E., KUPER G., MAAT P., MANN G., MARKOFF S., McFADDEN R., McKAY-BUKOWSKI D., MILLER-JONES J.C.A., NELLES A., PAAS H., PANDEY-POMMIER M., PIETKA M., PIZZO R., POLATIDIS A.G., REICH W., ROETTGERING H., ROWLINSON A., SCHWARZ D., SMIRNOV O., STEINMETZ M., STEWART A., SWINBANK J.D., TAGGER M., TANG Y., TASSE C., THOUDAM S., TORIBIO M.C., VAN DER HORST A.J., VERMEULEN R., VOCKS C., VAN WEEREN R.J., WIJERS R.A.M.J., WIJNANDS R., WIJNHOLDS S.J., WUCKNITZ O. and ZARKA P.

Abstract (from CDS):

LOFAR offers the unique capability of observing pulsars across the 10-240MHz frequency range with a fractional bandwidth of roughly 50%. This spectral range is well suited for studying the frequency evolution of pulse profile morphology caused by both intrinsic and extrinsic effects such as changing emission altitude in the pulsar magnetosphere or scatter broadening by the interstellar medium, respectively. The magnitude of most of these effects increases rapidly towards low frequencies. LOFAR can thus address a number of open questions about the nature of radio pulsar emission and its propagation through the interstellar medium. We present the average pulse profiles of 100 pulsars observed in the two LOFAR frequency bands: high band (120-167MHz, 100 profiles) and low band (15-62MHz, 26 profiles). We compare them with Westerbork Synthesis Radio Telescope (WSRT) and Lovell Telescope observations at higher frequencies (350 and 1400MHz) to study the profile evolution. The profiles were aligned in absolute phase by folding with a new set of timing solutions from the Lovell Telescope, which we present along with precise dispersion measures obtained with LOFAR. We find that the profile evolution with decreasing radio frequency does not follow a specific trend; depending on the geometry of the pulsar, new components can enter into or be hidden from view. Nonetheless, in general our observations confirm the widening of pulsar profiles at low frequencies, as expected from radius-to-frequency mapping or birefringence theories.

Abstract Copyright: ∼

Journal keyword(s): stars: neutron - pulsars: general

VizieR on-line data: <Available at CDS (J/A+A/586/A92): tableb1.dat tableb2.dat tableb3.dat>

Simbad objects: 100

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Number of rows : 100
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 PSR B0011+47 Psr 00 14 17.75 +47 46 33.4           ~ 62 0
2 PSR B0031-07 Psr 00 34 08.9100 -07 21 56.000           ~ 322 0
3 PSR J0051+0423 Psr 00 51 30.1 +04 22 49           ~ 20 0
4 PSR B0059+65 Psr 01 02 32.9914 +65 37 13.416           ~ 44 0
5 PSR B0105+65 Psr 01 08 22.5049 +66 08 34.499           ~ 75 0
6 PSR B0114+58 Psr 01 17 38.661 +59 14 38.39           ~ 90 0
7 PSR B0136+57 Psr 01 39 19.744 +58 14 31.73     13.41     ~ 151 0
8 PSR B0138+59 Psr 01 41 39.938 +60 09 32.30     12.85     ~ 112 0
9 PSR B0301+19 Psr 03 04 33.115 +19 32 51.40           ~ 224 0
10 PSR B0320+39 Psr 03 23 26.6619 +39 44 52.403           ~ 129 0
11 PSR B0329+54 Psr 03 32 59.3370698592 +54 34 45.028206408           ~ 645 1
12 PSR B0331+45 Psr 03 35 16.6416 +45 55 53.452           ~ 43 0
13 PSR B0339+53 Psr 03 43 12.90 +53 12 53.4           ~ 35 0
14 PSR B0355+54 Psr 03 58 53.7165 +54 13 13.727           ~ 437 1
15 PSR B0402+61 Psr 04 06 30.0806 +61 38 41.408           ~ 86 0
16 PSR B0410+69 Psr 04 15 55.653 +69 54 09.89           ~ 43 0
17 PSR B0447-12 Psr 04 50 08.7700 -12 48 07.000           ~ 61 0
18 PSR B0450-18 Psr 04 52 34.1150 -17 59 23.300           ~ 187 0
19 PSR B0450+55 Psr 04 54 07.709 +55 43 41.51           ~ 161 0
20 PSR B0523+11 Psr 05 25 56.5000 +11 15 19.100           ~ 116 0
21 PSR B0525+21 Psr 05 28 52.308 +22 00 01.00     14.30     ~ 356 0
22 PSR B0540+23 Psr 05 43 09.65 +23 29 06.1     14.40     ~ 253 0
23 PSR B0609+37 Psr 06 12 44.087 +37 21 40.20           ~ 57 0
24 PSR B0611+22 Psr 06 14 17.0324288405 +22 29 57.017874999           ~ 266 0
25 PSR B0626+24 Psr 06 29 05.7273 +24 15 41.546           ~ 112 0
26 PSR B0643+80 Psr 06 53 15.090 +80 52 00.22           ~ 62 0
27 PSR B0809+74 Psr 08 14 59.500 +74 29 05.70           ~ 405 0
28 PSR B0818-13 Psr 08 20 26.4020 -13 50 56.400           ~ 211 0
29 PSR J0823+0159 Psr 08 23 09.788 +01 59 12.56           DA 229 0
30 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 512 1
31 PSR B0834+06 Psr 08 37 05.642 +06 10 14.56           ~ 437 0
32 PSR B0906-17 Psr 09 08 38.1822 -17 39 37.670           ~ 90 0
33 PSR B0917+63 Psr 09 21 14.135 +62 54 13.91           ~ 38 0
34 PSR B0919+06 Psr 09 22 14.1600 +06 38 28.800           ~ 292 0
35 PSR B0943+10 Psr 09 46 07.31 +09 51 57.3           ~ 340 1
36 PSR B0950+08 Psr 09 53 09.2970 +07 55 36.400           ~ 755 2
37 PSR B1112+50 Psr 11 15 38.400 +50 30 12.29           ~ 144 0
38 PSR B1133+16 Psr 11 36 03.0720 +15 51 15.500           ~ 668 0
39 PSR J1238+21 Psr 12 38 23.17 +21 52 11.1           ~ 20 0
40 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 467 0
41 PSR J1313+0931 Psr 13 13 23.0 +09 31 56           ~ 15 0
42 PSR B1322+83 Psr 13 21 45.6315 +83 23 39.432           ~ 66 0
43 PSR B1508+55 Psr 15 09 25.7 +55 31 33           ~ 301 1
44 PSR B1530+27 Psr 15 32 10.3646 +27 45 49.623           ~ 113 0
45 PSR B1540-06 Psr 15 43 30.1373 -06 20 45.332           ~ 118 0
46 PSR B1541+09 Psr 15 43 38.8 +09 29 16           ~ 197 0
47 PSR B1604-00 Psr 16 07 12.1 -00 32 41           ~ 215 0
48 PSR B1612+07 Psr 16 14 40.906 +07 37 31.00           ~ 92 0
49 PSR J1627+1419 Psr 16 27 18.759 +14 19 20.70           ~ 20 0
50 PSR B1633+24 Psr 16 35 25.781 +24 18 47.30           ~ 67 0
51 PSR B1642-03 Psr 16 45 02.0330 -03 17 57.200           ~ 363 0
52 PSR J1645+1012 Psr 16 45 34.415 +10 12 16.04           ~ 15 0
53 PSR J1652+2651 Psr 16 52 03.080 +26 51 39.85           ~ 31 0
54 PSR B1737+13 Psr 17 40 07.3455 +13 11 56.690           ~ 175 0
55 PSR B1749-28 Psr 17 52 58.7130 -28 06 33.900           ~ 261 0
56 PSR B1818-04 Psr 18 20 52.5920 -04 27 37.120           ~ 211 0
57 PSR B1821+05 Psr 18 23 30.9731 +05 50 24.310           ~ 123 0
58 PSR B1822-09 Psr 18 25 30.5940 -09 35 21.200           ~ 346 0
59 PSR B1831-04 Psr 18 34 25.6320 -04 26 15.200           ~ 93 0
60 PSR B1839+56 Psr 18 40 44.5372 +56 40 54.852           ~ 102 0
61 PSR B1839+09 Psr 18 41 55.9380 +09 12 08.300           ~ 122 0
62 PSR B1842+14 Psr 18 44 54.8946 +14 54 14.120           ~ 111 0
63 PSR B1848+13 Psr 18 50 35.473 +13 35 58.39           ~ 44 0
64 PSR B1848+12 Psr 18 51 13.2375743628 +12 59 35.328125251           ~ 41 0
65 PSR B1857-26 Psr 19 00 47.5440 -26 00 44.200           ~ 179 0
66 PSR B1905+39 Psr 19 07 34.656 +40 02 05.71           ~ 85 0
67 PSR B1907+00 Psr 19 09 35.2640 +00 07 57.000           ~ 79 0
68 PSR B1907+02 Psr 19 09 38.3210 +02 54 49.900           ~ 84 0
69 PSR B1907+10 Psr 19 09 48.6222922872 +11 02 02.884778124     13.61     ~ 143 0
70 PSR B1911-04 Psr 19 13 54.1820 -04 40 47.600           ~ 173 0
71 PSR B1915+09 Psr 19 16 32.3520 +09 51 25.100           ~ 88 0
72 PSR B1915+13 Psr 19 17 39.7864 +13 53 57.077           ~ 175 0
73 PSR B1917+00 Psr 19 19 50.6820 +00 21 39.600           ~ 105 0
74 PSR B1918+26 Psr 19 20 38.374 +26 50 38.40           ~ 37 0
75 PSR B1919+21 Psr 19 21 44.815 +21 53 02.25           ~ 383 0
76 PSR B1920+21 Psr 19 22 53.531 +21 10 41.97           ~ 94 0
77 PSR B1923+04 Psr 19 26 24.4600 +04 31 31.900           ~ 66 0
78 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 753 0
79 PSR B1953+50 Psr 19 55 18.7637 +50 59 55.292           ~ 86 0
80 PSR B2021+51 Psr 20 22 49.8730 +51 54 50.233           ~ 265 1
81 PSR B2022+50 Psr 20 23 41.9427 +50 37 34.858           ~ 42 0
82 PSR B2043-04 Psr 20 46 00.1600 -04 21 25.900           ~ 74 0
83 PSR B2044+15 Psr 20 46 39.3373 +15 40 33.558           ~ 98 0
84 PSR B2106+44 Psr 21 08 21.0 +44 41 41           ~ 66 0
85 PSR B2110+27 Psr 21 13 04.3506 +27 54 01.160           ~ 103 0
86 PSR B2113+14 Psr 21 16 13.7390 +14 14 21.000           ~ 83 0
87 PSR B2122+13 Psr 21 24 46.574 +14 07 19.30           ~ 33 0
88 PSR B2148+63 Psr 21 49 58.7033 +63 29 44.277           ~ 90 0
89 PSR B2154+40 Psr 21 57 01.840 +40 17 45.89           ~ 146 0
90 PSR B2217+47 Psr 22 19 48.139 +47 54 53.93           ~ 219 0
91 PSR B2223+65 Psr 22 25 52.8627 +65 35 36.371           ~ 323 0
92 PSR B2227+61 Psr 22 29 41.834 +62 05 36.02           ~ 45 0
93 PSR J2248-0101 Psr 22 48 26.8859 -01 01 48.085           ~ 31 0
94 PSR J2253+1516 Psr 22 53 14.533 +15 16 37.83           ~ 22 0
95 PSR B2255+58 Psr 22 57 57.744 +59 09 14.83     12.59     ~ 88 0
96 PSR B2303+30 Psr 23 05 58.3212 +31 00 01.281           ~ 202 0
97 PSR B2306+55 Psr 23 08 13.822 +55 47 36.03           ~ 68 0
98 PSR B2310+42 Psr 23 13 08.5976 +42 53 12.987           ~ 135 0
99 PSR B2315+21 Psr 23 17 57.8419 +21 49 48.019           ~ 108 0
100 PSR B2334+61 Psr 23 37 05.779 +61 51 01.69           ~ 190 1

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