Academic Journal
The SUrvey for Pulsars and Extragalactic Radio Bursts – IV. Discovery and polarimetry of a 12.1-s radio pulsar
| العنوان: | The SUrvey for Pulsars and Extragalactic Radio Bursts – IV. Discovery and polarimetry of a 12.1-s radio pulsar |
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| المؤلفون: | Morello, V., Keane, E.F., Enoto, T., Guillot, S., Ho, W.C.G., Jameson, A., Kramer, M., Stappers, B.W., Bailes, M., Barr, E.D., Bhandari, S., Caleb, M., Flynn, C.M.L., Jankowski, F., Johnston, S., van Straten, W., Arzoumanian, Z., Bogdanov, S., Gendreau, K.C., Malacaria, C., Ray, P.S., Remillard, R.A. |
| المساهمون: | Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Mon.Not.Roy.Astron.Soc. ; https://hal.science/hal-02394304 ; Mon.Not.Roy.Astron.Soc., 2020, 493 (1), pp.1165-1177. ⟨10.1093/mnras/staa321⟩ |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2020 |
| المجموعة: | Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: | stars: neutron, pulsars: general, pulsars: individual: PSR J2251−3711, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| الوصف: | International audience ; We report the discovery of PSR J2251−3711, a radio pulsar with a spin period of 12.1 s, the second longest currently known. Its timing parameters imply a characteristic age of 15 Myr, a surface magnetic field of 1.3 × 10^13 G, and a spin-down luminosity of 2.9 × 10^29 erg s^−1. Its dispersion measure of 12.12(1) pc cm^−3 leads to distance estimates of 0.5 and 1.3 kpc according to the NE2001 and YMW16 Galactic free electron density models, respectively. Some of its single pulses show an uninterrupted 180-deg sweep of the phase-resolved polarization position angle, with an S-shape reminiscent of the rotating vector model prediction. However, the fact that this sweep occurs at different phases from one pulse to another is remarkable and without straightforward explanation. Although PSR J2251−3711 lies in the region of the |$P-\dot{P}$| parameter space occupied by the X-ray isolated neutron stars (XINS), there is no evidence for an X-ray counterpart in our Swift XRT observation; this places a 99 per cent-confidence upper bound on its unabsorbed bolometric thermal luminosity of |$1.1 \times 10^{31}~(d / 1~\mathrm{kpc})^2~\mathrm{erg\, s}^{-1}$| for an assumed temperature of 85 eV, where d is the distance to the pulsar. Further observations are needed to determine whether it is a rotation-powered pulsar with a true age of at least several Myr, or a much younger object such as an XINS or a recently cooled magnetar. Extreme specimens like PSR J2251−3711 help bridge populations in the so-called neutron star zoo in an attempt to understand their origins and evolution. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/arxiv/1910.04124; ARXIV: 1910.04124; INSPIRE: 1758251 |
| DOI: | 10.1093/mnras/staa321 |
| الاتاحة: | https://hal.science/hal-02394304 https://hal.science/hal-02394304v1/document https://hal.science/hal-02394304v1/file/staa321.pdf https://doi.org/10.1093/mnras/staa321 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.1CD8B0B9 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/mnras/staa321 |
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