2011A&A...527A..83Z


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.25CET11:44:38

2011A&A...527A..83Z - Astronomy and Astrophysics, volume 527A, 83-83 (2011/3-1)

Study of measured pulsar masses and their possible conclusions.

ZHANG C.M., WANG J., ZHAO Y.H., YIN H.X., SONG L.M., MENEZES D.P., WICKRAMASINGHE D.T., FERRARIO L. and CHARDONNET P.

Abstract (from CDS):

We study the statistics of 61 measured masses of neutron stars (NSs) in binary pulsar systems, including 18 double NS (DNS) systems, 26 radio pulsars (10 in our Galaxy) with white dwarf (WD) companions, 3 NSs with main-sequence companions, 13 NSs in X-ray binaries, and one undetermined system. We derive a mean value of M=1.46±0.30M. When the 46 NSs with measured spin periods are divided into two groups at 20 milliseconds, i.e., the millisecond pulsar (MSP) group and others, we find that their mass averages are, respectively, M=1.57±0.35M and M=1.37±0.23M. In the framework of the pulsar recycling hypothesis, this suggests that an accretion of approximately ∼0.2M is sufficient to spin up a neutron star and place it in the millisecond pulsar group. Based on these estimates, an approximate empirical relation between the accreting mass (ΔM) of recycled pulsar and its spin period is proposed as ΔM=0.43 (M)(P/1 ms)–2/3. If we focus only on the DNS, the mass average of all 18 DNSs is 1.32±0.14M, and the mass averages of the recycled DNSs and the non-recycled NS companions are, respectively, 1.38±0.12M and 1.25±0.13M. This is consistent with the hypothesis that the masses of both NSs in DNS system have been affected by accretion. The mass average of MSPs is higher than the Chandrasekhar limit 1.44M, which may imply that most of binary MSPs form via the standard scenario by accretion recycling. If we were to assume that the mass of a MSP formed by the accretion induced collapse (AIC) of a white dwarf must be less than 1.35M, then the portion of the binary MSPs involved in the AICs would not be higher than 20%, which imposes a constraint on the AIC origin of MSPs. With accreting mass from the companion, the nuclear matter composition of MSP may experience a transition from the ``soft'' equation of state (EOS) to a ``stiff'' EOS or even neutron to quark matter.

Abstract Copyright:

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

CDS comments: Table 3 PSR J1748-2021I and J are probable misprint for PSR J1748-2446I and J.

Simbad objects: 55

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Number of rows : 55

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 PSR J0024-72H Psr 00 24 06.686 -72 04 06.74           ~ 52 1
2 PSR B0021-72I Psr 00 24 07.9330 -72 04 39.669           ~ 51 1
3 PSR J0045-7319 HXB 00 45 35.255 -73 19 03.32   15.97 16.18   16.30 B0.5-B2IV-V 161 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9184 1
5 SK 160 HXB 01 17 05.1447530244 -73 26 36.015353425 12.23 13.00 13.15   13.17 O9.7Ia+ 789 0
6 PSR J0437-47 Psr 04 37 15.7976203608 -47 15 08.536908257           DC 734 0
7 PSR J0514-4002A Psr 05 14 06.6927 -40 02 48.897           ~ 30 1
8 X LMC X-4 HXB 05 32 49.5558669817 -66 22 13.202534152   13.9 14.0     O8III 599 0
9 PSR J0621+10 Psr 06 21 22.11108 +10 02 38.7410           ~ 90 1
10 PSR J0737-3039 Psr 07 37 51.248 -30 39 40.83           ~ 352 1
11 PSR J0751+1807 Psr 07 51 09.1539 +18 07 38.335           ~ 246 1
12 V* GP Vel HXB 09 02 06.8610736194 -40 33 16.896402010 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1358 0
13 V* V395 Car LXB 09 22 34.6759428452 -63 17 41.354653742 15.40 15.90 15.3     ~ 119 0
14 PSR J1012+5307 Psr 10 12 33.4341531837 +53 07 02.564526788     19.5     DA 309 1
15 PSR J1023+0038 LXB 10 23 47.6840307966 +00 38 41.006983532     17.31     GV 293 0
16 PSR J1045-45 Psr 10 45 50.18941 -45 09 54.1430           ~ 113 1
17 V* V779 Cen HXB 11 21 15.0920367078 -60 37 25.627505233   14.4       O9III/Veq 987 0
18 PSR J1141-6545 Psr 11 41 07.0220 -65 45 19.089     25.08 24.38   ~ 144 1
19 PSR J1518+4904 Psr 15 18 16.832 +49 04 34.19           ~ 155 1
20 PSR J1518+0204B Psr 15 18 31.458 +02 05 15.47           ~ 37 1
21 PSR B1534+11 Psr 15 37 09.9603 +11 55 55.554           ~ 386 1
22 V* QV Nor HXB 15 42 23.3633078550 -52 23 09.576918639   16.3 14.5     B0.2Ia:e 368 1
23 PSR J1614-2230 Psr 16 14 36.5070 -22 30 31.207           ~ 259 1
24 V* HZ Her LXB 16 57 49.8110797681 +35 20 32.487435684 11.90 14.89 13.63 13.88   B3/6ep 1903 0
25 HD 153919 HXB 17 03 56.7728262865 -37 50 38.912077679 6.06 6.78 6.51 6.08 5.90 O6Iafcp 748 1
26 PSR J1713+0447 Psr 17 13 49.53053 +07 47 37.5264           ~ 347 1
27 PSR J1738+0333 Psr 17 38 53.96317 +03 33 10.8390           ~ 109 1
28 PSR J1740-5340 Psr 17 40 44.589 -53 40 40.90   17.43   16.25   ~ 126 2
29 PSR J1748-2446I Psr 17 48 04.9 -24 46 45           ~ 28 0
30 PSR J1748-2446J Psr 17 48 04.9 -24 46 45           ~ 23 0
31 PSR J1748-2444 Psr 17 48 48.51 -24 44 37.0           ~ 22 1
32 PSR J1748-2021B Psr 17 48 52.95290 -20 21 38.8600           ~ 23 0
33 PSR J1753-2240 Psr 17 53 39.847 -22 40 42.00           ~ 30 1
34 PSR J1756-2251 Psr 17 56 46.63 -22 51 59.4           ~ 99 1
35 PSR J1802-2124 Psr 18 02 05.44 -21 24 02.9           ~ 53 1
36 PSR J1804-27 Psr 18 04 21.1312 -27 17 31.200           ~ 61 1
37 PSR J1802-07 Psr 18 04 49.8954 -07 35 24.690           ~ 89 2
38 V* V4580 Sgr LXB 18 08 27.54 -36 58 44.3   16.81 16.51     ~ 858 0
39 PSR B1809-17.6 Psr 18 11 55.034 -17 36 37.70           ~ 83 1
40 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 896 1
41 PSR J1824-2452C Psr 18 24 32.8 -24 52 11           ~ 18 1
42 V* V691 CrA LXB 18 25 46.8186056396 -37 06 18.529015318 14.30 15.20 15.1     ~ 397 0
43 PSR J1829+2456 Psr 18 29 34.6668 +24 56 18.193           ~ 58 1
44 PSR B1855+09 Psr 18 57 36.39161 +09 43 17.2322           DA 471 1
45 2MAXI J1900-248 LXB 19 00 08.65 -24 55 13.7     18.09     ~ 174 0
46 PSR J1903+0327 Psr 19 03 05.7937 +03 27 19.222           ~ 120 1
47 PSR J1906+0749 Psr 19 06 48.67 +07 46 28.6           ~ 100 1
48 PSR J1909-3744 Psr 19 09 47.43788 -37 44 14.3240           ~ 191 2
49 PSR J1910-5959A Psr 19 11 42.7562 -59 58 26.900 22.02 22.13 22.03     DA5 79 1
50 PSR J1915+1606 Psr 19 15 27.99999 +16 06 27.4034     22.5     ~ 912 1
51 PSR J2019+24 Psr 20 19 31.94900 +24 25 15.3038           ~ 121 1
52 V* LZ Aqr LXB 21 23 14.54 -05 47 52.9 15.90 16.78 16.8     ~ 141 0
53 PSR J2129+1209C Psr 21 30 01.2030 +12 10 38.159           ~ 166 2
54 V* V1341 Cyg LXB 21 44 41.1544523872 +38 19 17.065856122 15.00 15.13 14.68 15.00   A9III 1065 1
55 PSR J2305+4707 Psr 23 05 55.842 +47 07 45.32           ~ 205 1

    Equat.    Gal    SGal    Ecl

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2020.01.25-11:44:38

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