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

@article{citeulike:4794542, abstract = {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 0.2", and confirms the presence of X-ray pulsations and the \~{}1keV absorption line, previously observed in the X-ray emission of this source.}, archivePrefix = {arXiv}, author = {Rea, N. and Mclaughlin, M. A. and Gaensler, B. M. and Slane, P. O. and Stella, L. and Reynolds, S. P. and Burgay, M. and Israel, G. L. and Possenti, A. and Chatterjee, S.}, citeulike-article-id = {4794542}, citeulike-linkout-0 = {http://arxiv.org/abs/0906.1394}, citeulike-linkout-1 = {http://arxiv.org/pdf/0906.1394}, day = {7}, eprint = {0906.1394}, keywords = {axp, rrat, x-ray}, month = {Jun}, posted-at = {2009-06-10 07:48:52}, priority = {2}, title = {Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458}, url = {http://arxiv.org/abs/0906.1394}, year = {2009} }

TY - JOUR ID - citeulike:4794542 L3 - citeulike-article-id:4794542 N2 - 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 0.2", and confirms the presence of X-ray pulsations and the ~1keV absorption line, previously observed in the X-ray emission of this source. TI - Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458 KW - axp KW - rrat KW - x-ray AU - Rea, N AU - Mclaughlin, MA AU - Gaensler, BM AU - Slane, PO AU - Stella, L AU - Reynolds, SP AU - Burgay, M AU - Israel, GL AU - Possenti, A AU - Chatterjee, S PY - 2009/Jun/07/ UR - http://arxiv.org/abs/0906.1394 ER -