Publication Date:
2003-07-26
Description:
We report the X-ray Multimirror Mission-Newton European Photon Imaging Camera observation of two elongated parallel x-ray tails trailing the pulsar Geminga. They are aligned with the object's supersonic motion, extend for approximately 2', and have a nonthermal spectrum produced by electron-synchrotron emission in the bow shock between the pulsar wind and the surrounding medium. Electron lifetime against synchrotron cooling matches the source transit time over the x-ray features' length. Such an x-ray detection of a pulsar bow shock (with no Halpha emission) allows us to gauge the pulsar electron injection energy and the shock magnetic field while constraining the angle of Geminga's motion and the local matter density.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caraveo, P A -- Bignami, G F -- DeLuca, A -- Mereghetti, S -- Pellizzoni, A -- Mignani, R -- Tur, A -- Becker, W -- New York, N.Y. -- Science. 2003 Sep 5;301(5638):1345-7. Epub 2003 Jul 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Istituto di Astrofisica Spaziale e Fisica Cosmica-Consiglio Nazionale della Richerche, Via Bassini, 15-20133 Milano, Italy. pat@mi.iasf.cnr.it〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881574" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
