RRAT J1819-1458

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Pulsar
RRAT J1819-1458
Observation
dates equinoxJ2000.0 , epoch : J2000.0
Right ascension 18 h 19 m 33 s
declination −14 ° 58 ′ 16 ″
Astrometry
distance  (12,000)  ly
(3,600)  pc
Physical Properties
Age (117,000)  a
history
discovery 2006
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RRAT J1819–1458 is a neutron star and belongs to the class of rotating radio transients .

properties

RRAT J1819-1458 sporadically sends out pulses of radio waves. It has a rotation period of 4.26 seconds and slows down, which speaks for a strong dipole magnetic field (5 × 10 13 G , 5 × 10 9 T ). The pulses are the brightest of all RRATs discovered to date. It is believed that this pulsar is only about 100,000 years old.

The object has 3 emission phases during one period, with the strongest pulses coming in the middle phase. The pulse identity is comparable to normal pulsars and giant pulse pulsars, which indicates similar emission mechanisms as there.

Emissions around RRAT J1819−1458 can also be found in the X-ray range, which is interpreted as a fog in the vicinity that draws its energy from the pulsar. There may be a second object in the system. The pulsar is observed with the satellites XMM-Newton and Chandra .

RRAT J1819-1458 has been observed since its discovery and shows glitches - a behavior that many young pulsars and magnetars show.

Individual evidence

  1. a b c d e McLaughlin, MA: Transient radio bursts from rotating neutron stars . In: Nature . 439, No. 7078, 2006, pp. 817-820. arxiv : astro-ph / 0511587 . bibcode : 2006Natur.439..817M . doi : 10.1038 / nature04440 . PMID 16482150 .
  2. Hu, H.-D. et al .: Strong pulses detected from a rotating radio transient J1819-1458 . In: Astronomy and Astrophysics . 530, 2011, p. A67. arxiv : 1104.3256 . bibcode : 2011A & A ... 530A..67H . doi : 10.1051 / 0004-6361 / 201015953 .
  3. ^ N. Rea et al .: Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458 . In: The Astrophysical Journal Letters . 703, No. 1, 2009, pp. L41-L45. arxiv : 0906.1394 . bibcode : 2009ApJ ... 703L..41R . doi : 10.1088 / 0004-637X / 703/1 / L41 .
  4. N. Rea et al .: Near-infrared observations of rotating radio transients . In: Monthly Notices of the Royal Astronomical Society . 407, No. 3, 2010, pp. 1887-1894. arxiv : 1003.2085 . bibcode : 2010MNRAS.407.1887R . doi : 10.1111 / j.1365-2966.2010.17032.x .
  5. Gaensler, BM: Chandra smells a RRAT: X-ray Detection of a Rotating Radio Transient . In: Astrophysics and Space Science . 308, No. 1-4, 2007, pp. 95-99. arxiv : astro-ph / 0608311 . bibcode : 2007Ap & SS.308 ... 95G . doi : 10.1007 / s10509-007-9352-8 .
  6. ^ Lyne, AG et al .: Unusual glitch activity in the RRAT J1819-1458: an exhausted magnetar? . In: Monthly Notices of the Royal Astronomical Society . 400, No. 3, 2006, pp. 1439-1444. arxiv : 0909.1165 . bibcode : 2009MNRAS.400.1439L . doi : 10.1111 / j.1365-2966.2009.15668.x .