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| Query : 2009ApJ...703L..41R |
2009ApJ...703L..41R - Astrophys. J., 703, L41-L45 (2009/September-3)
Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458.
REA N., McLAUGHLIN M.A., GAENSLER B.M., SLANE P.O., STELLA L., REYNOLDS S.P., BURGAY M., ISRAEL G.L., POSSENTI A. and CHATTERJEE S.
Abstract (from CDS):
We report on the discovery of extended X-ray emission around the high magnetic field rotating radio transient J1819-1458. Using a 30 ks Chandra ACIS-S observation, we found significant evidence for extended X-ray emission with a peculiar shape: a compact region out to ∼5".5, and more diffuse emission extending out to ∼13'' from the source. The most plausible interpretation is a nebula somehow powered by the pulsar, although the small number of counts prevents a conclusive answer on the nature of this emission. RRAT J1819-1458's spin-down energy loss rate (E{dot}€rot~ 3x1032erg/s) is much lower than that of other pulsars with observed spin–down–powered pulsar wind nebulae (PWNe), and implies a rather high X–ray efficiency of ηX= L(pwn0.5–8keV)/E{dot}_rot~ 0.2 at converting spin–down power into the PWN X–ray emission. This suggests the need of an additional source of energy rather than the spin–down power alone, such as the high magnetic energy of this source. Furthermore, this Chandra observation allowed us to refine the positional accuracy of RRAT J1819–1458 to a radius of 0".3, and confirms the presence of X–ray pulsations and the 1 keV absorption line, previously observed in the X–ray emission of this source.
Abstract Copyright: ∼
Journal keyword(s): pulsars: individual: RRAT J1819-1458 - stars: magnetic fields - X-rays: stars
Simbad objects: 3
| Number of rows : 3 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | PSR J1119-6127 | Psr | 11 19 14.30 | -61 27 49.5 | ~ | 439 | 1 | |||||
| 2 | PSR J1819-1458 | Psr | 18 19 34.173 | -14 58 03.57 | ~ | 136 | 0 | |||||
| 3 | PSR J1846-0258 | Psr | 18 46 24.75 | -02 58 29.6 | ~ | 388 | 2 |
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