Evolutionary implications of a magnetar interpretation for GLEAM-X J162759.5–523504.3
نویسندگان
چکیده
ABSTRACT The radio pulsar GLEAM-X J162759.5–523504.3 has an extremely long spin period ($P = 1091.17\, \mbox{s}$), and yet seemingly continues to spin-down rapidly ($\dot{P} < 1.2 \times 10^{-9}\, \mbox{ss}^{-1}$). magnetic field strength that is implied, if the source a neutron star undergoing dipole braking, could exceed $10^{16}\, \mbox{G}$. This object may therefore be most magnetized observed date. In this paper, critical analysis of magnetar interpretation for provided. (i) A minimum polar $B \sim 5 10^{15}\, \mbox{G}$ appears necessary activate as pulsar, based on conventional ‘death valley’ assumptions. (ii) Back-extrapolation from braking Hall–plastic–Ohm decay suggests large angularize momentum reservoir was available at birth support intense amplification. (iii) observational absence X-rays constrains star’s age, competition between heating Urca cooling implies surface luminosity function time. If isolated, young ($\sim 10\, \mbox{kyr}$) with present-day \gtrsim 10^{16}\, \mbox{G}$, upper limit ($\approx 10^{30}\, \mbox{erg s}^{-1}$) set its thermal it via direct mechanism.
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2023
ISSN: ['0035-8711', '1365-8711', '1365-2966']
DOI: https://doi.org/10.1093/mnras/stad274