Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458

Details Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458 Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458

2009-06-07

arxiv.org/abs/0906.1394v2

Astrophys.J.703:L41-L45,2009

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

5 pages, 3 figures; ApJ Letter accepted

Scientific paper

10.1088/0004-637X/703/1/L41

We report on the discovery of extended X-ray emission around the high magnetic field Rotating Radio Transient J1819-1458. Using a 30ks 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 (Edot~3x10^{32} erg/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 eta_{X} = L_(pwn; 0.5-8keV)/Edot~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 ~1keV absorption line, previously observed in the X-ray emission of this source.

Affiliated with

Also associated with

No associations

Rating

Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-231540