PSR J0108−1431

Données d'observation
(époque J2000.0)
Ascension droite	01^h 08^m 08,29^s^[1]
Déclinaison	−14° 31′ 48,5″^[1]
Constellation	Baleine
Magnitude apparente	≥ 27,8^[2]
Localisation dans la constellation : Baleine

Astrométrie
Mouvement propre	μ_α = 92 ± 44 mas/a^[3] μ_δ = −176 ± 70 mas/a^[3]
Distance	∼ 424 a.l. (∼ 130 pc)^[4]

Caractéristiques physiques
Température	88 000 K^[5]
Âge	166 Ma^[3]

PSR J0108−1431 est un pulsar situé à une distance d’environ environ 130 pc (∼424 al) dans la constellation de la Baleine. Ce pulsar a été découvert en 1994 lors du Parkes Southern Pulsar Survey^[6]. Il est considéré comme un pulsar très ancien avec un âge estimé à 166 millions d’années et une période de rotation de 0,8 seconde^[3]. L’énergie de rotation générée par le spin-down de ce pulsar est de 5,8 × 10²³ W et le champ magnétique de surface est de 2,5 × 10⁷ T. En 2008, c’est le deuxième pulsar le plus faible connu^[2].

Une émission de rayons X avec un flux d’énergie de (9 ± 2) × 10⁻¹⁸ W m^-2 a été détectée dans la bande 0,3 à 8 keV à l’aide du télescope spatial Chandra. Cette énergie de rayons X est générée par la conversion de 0,4 % de la puissance de spin-down du pulsar. En 2009, le PSR J0108-1431 est le moins puissant des pulsars ordinaires qui ont été détectés dans le domaine des rayons X^[3].

Le Très Grand Télescope de l’ESO dans le nord du Chili a observé une possible contrepartie optique de cette étoile à neutrons. L’objet a une magnitude apparente qui est (X ≤ 27,8)^[2]. Aucun compagnon n’a été découvert en orbite autour de cet objet^[4].

Références

(en) Cet article est partiellement ou en totalité issu de l’article de Wikipédia en anglais intitulé « PSR J0108−1431 » (voir la liste des auteurs).

↑ ^{a et b} (en) G. Hobbs, A. G. Lyne, M. Kramer, C. E. Martin et C. Jordan, « Long-term timing observations of 374 pulsars », Monthly Notices of the Royal Astronomical Society, vol. 353, n^o 4,‎ octobre 2004, p. 1311–1344 (DOI 10.1111/j.1365-2966.2004.08157.x, Bibcode 2004MNRAS.353.1311H)
↑ ^{a b et c} (en) R. P. Mignani, G. G. Pavlov et O. Kargaltsev, « A possible optical counterpart to the old nearby pulsar J0108-1431 », Astronomy & Astrophysics, vol. 488, n^o 3,‎ septembre 2008, p. 1027–1030 (DOI 10.1051/0004-6361:200810212, Bibcode 2008A&A...488.1027M, arXiv 0805.2586, S2CID 15850807)
↑ ^{a b c d et e} (en) G. G. Pavlov, O. Kargaltsev, J. A. Wong et G. P. Garmire, « Detection of X-Ray Emission from the Very Old Pulsar J0108-1431 », The Astronomical Journal, vol. 691, n^o 1,‎ janvier 2009, p. 458–464 (DOI 10.1088/0004-637X/691/1/458, Bibcode 2009ApJ...691..458P, arXiv 0803.0761, S2CID 6283029)
↑ ^{a et b} (en) B. Posselt, R. Neuhäuser et F. Haberl, « Searching for substellar companions of young isolated neutron stars », Astronomy & Astrophysics, vol. 496, n^o 2,‎ mars 2009, p. 533–545 (DOI 10.1051/0004-6361/200810156, Bibcode 2009A&A...496..533P, arXiv 0811.0398, S2CID 10639250)
↑ (en) Oleg Kargaltsev, George G. Pavlov et Roger W. Romani, « Ultraviolet Emission from the Millisecond Pulsar J0437-4715 », The Astronomical Journal, vol. 602, n^o 1,‎ février 2004, p. 327–335 (DOI 10.1086/380993, Bibcode 2004ApJ...602..327K, S2CID 15199158)
↑ (en) T. M. Tauris et al., « Discovery of PSR J0108-1431: The closest known neutron star? », The Astronomical Journal Letters, vol. 428, n^o 2,‎ juin 1994, L53–L55 (DOI 10.1086/187391, Bibcode 1994ApJ...428L..53T, lire en ligne [PDF], consulté le 24 août 2024)

Liens externes

Ressource relative à l'astronomie :
- Simbad

Bases de données
VizieR	PSR : J0108-1431

v · m Étoiles de la constellation de la Baleine
Bayer	α (Menkar) β (Diphda) γ (Kaffaljidhma) δ ε ζ (Baten Kaitos) η θ ι κ¹ κ² λ μ ν ξ¹ ξ² ο (Mira) π ρ σ τ υ φ¹ φ² φ³ φ⁴ χ
Flamsteed	1 2 3 6 7 9 10 11 12 13 14 15 18 20 21 25 26 27 28 29 30 32 33 34 35 36 37 38 39 40 41 42 43 44 46 47 48 49 50 56 57 58 60 61 62 63 64 66 67 69 70 71 75 77 79 80 81 84 93 94 95 25 Ari
Étoiles variables	T W RR TV TW UU VZ (Mira B) WW WX XY XZ YZ ZZ AA AB AD AR BG BK CF DK EH EL EO ES
HR	10 12 31 37 51 61 72 108 118 159 173 174 197 206 210 218 220 227 228 247 251 263 394 404 405 425 448 466 473 492 500 513 560 608 611 616 625 638 651 672 692 693 713 719 732 737 753 766 770 775 784 796 816 870 9096 9101
HD	1690 2638 4747 5319 6718 7449 11506 11964 15115 16031 224693 (Axólotl)
Gliese	40 1002 1005 1057 2012
NGC	156 158 302 308 310 607 764 1014 1251
Autres	2M 0122-24 BD−17 63 (Felixvarela) Étoile de Cayrel CFBDS J005910.90–011401.3 DENIS-P J020529.0−115925 GD 40 HIP 5158 HIP 11915 HIP 11952 L 870-2 LHS 1140 Luyten 726-8 (UV/BL) PSR J0108−1431 SDSS J001820.5−093939.2 SDSS J0106−1000 SDSSp J005406.55−003101.8 ULAS J003402.77−005206.7 WD J2356-209 WASP-20 WASP-26 WASP-44 WASP-71 (Mpingo) WHL0137-LS WISE J0254+0223 (en)
Liste d'étoiles de la Baleine

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