2016A&A...587A.109G


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET03:07:39

2016A&A...587A.109G - Astronomy and Astrophysics, volume 587A, 109-109 (2016/3-1)

The gamma-ray millisecond pulsar deathline, revisited. New velocity and distance measurements.

GUILLEMOT L., SMITH D.A., LAFFON H., JANSSEN G.H., COGNARD I., THEUREAU G., DESVIGNES G., FERRARA E.C. and RAY P.S.

Abstract (from CDS):

Millisecond pulsars (MSPs) represent nearly half of the more than 160 currently known γ-ray pulsars detected by the Large Area Telescope on the Fermi satellite, and a third of all known MSPs are seen in γ rays. The least energetic γ-ray MSPs enable us to probe the so-called deathline for high-energy emission, i.e., the spin-down luminosity limit under which pulsars (PSRs) cease to produce detectable high-energy radiation. Characterizing the MSP luminosity distribution helps to determine their contribution to the Galactic diffuse γ-ray emission. Because of the Shklovskii effect, precise proper motion and distance measurements are key ingredients for determining the spin-down luminosities of MSPs accurately. Our aim is to obtain new measurements of these parameters for γ-ray MSPs when possible, and clarify the relationship between the γ-ray luminosity of pulsars and their spin-down luminosity. Detecting low spin-down luminosity pulsars in γ rays and characterizing their spin properties is also particularly interesting for constraining the deathline for high-energy emission. We made use of the high-quality pulsar timing data recorded at the Nancay Radio Telescope over several years to characterize the properties of a selection of MSPs. For one of the pulsars, the dataset was complemented with Westerbork Synthesis Radio Telescope observations. The rotation ephemerides derived from this analysis were also used to search the LAT data for new γ-ray MSPs. For the MSPs considered in this study, we obtained new transverse proper motion measurements or updated the existing ones, and placed new distance constraints for some of them, with four new timing parallax measurements. We discovered significant GeV γ-ray signals from four MSPs, i.e., PSRs J0740+6620, J0931-1902, J1455-3330, and J1730-2304. The latter is now the least energetic γ-ray pulsar found to date. Despite the improved dE/dt and Lγ estimates, the relationship between these two quantities remains unclear, especially at low dE/dt values.

Abstract Copyright:

Journal keyword(s): gamma rays: stars - pulsars: general - parallaxes

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 PSR J0034-05 Psr 00 34 21.8281 -05 34 36.620           ~ 161 0
2 PSR J0340+41 Psr 03 40 23.2887 +41 30 45.300           ~ 54 0
3 PSR J0610-2100 Psr 06 10 13.5921 -21 00 28.016           ~ 64 0
4 PSR J0614-3329 Psr 06 14 10.3479 -33 29 54.116           ~ 73 1
5 PSR J0740+6620 Psr 07 40 45.799 +66 20 33.60           ~ 85 0
6 PSR J0751+1807 Psr 07 51 09.1539 +18 07 38.335           ~ 260 1
7 PSR J0931-1902 Psr 09 31 17.8 -19 06 57           ~ 24 0
8 PSR J1024-0719 Psr 10 24 38.697 -07 19 19.07           ~ 189 0
9 PSR J1231-1411 Psr 12 31 11.3069 -14 11 43.628           ~ 93 0
10 PSR J1455-3300 Psr 14 55 47.9624 -33 30 46.360           ~ 113 1
11 PSR J1614-2230 Psr 16 14 36.5070 -22 30 31.207           ~ 303 1
12 PSR J1730-2304 Psr 17 30 21.6483 -23 04 31.400           ~ 114 1
13 PSR J1741+1351 Psr 17 41 28.0 +13 54 33           ~ 68 0
14 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11994 0
15 PSR J1811-2405 Psr 18 11 19.8539 -24 05 18.720           ~ 21 1
16 PSR J1820-30A Psr 18 23 40.4842 -30 21 39.920           ~ 130 1
17 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 792 1
18 PSR J1824-2452A Psr 18 24 32.009 -24 52 11.10           ~ 440 2
19 PSR J2017+0603 Psr 20 17 22.7048 +06 03 05.585           ~ 79 1
20 PSR J2043+1711 Psr 20 43 20.8828 +17 11 28.941           ~ 82 1
21 PSR J2214+3000 Psr 22 14 38.8480 +30 00 38.209           ~ 82 0
22 PSR J2302+4442 Psr 23 02 46.9789 +44 42 22.102           ~ 79 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-03:07:39

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