Geminga's Tails: A Pulsar Bow Shock Probing the Interstellar Medium-Reference-Cited by-同舟云学术

Geminga's Tails: A Pulsar Bow Shock Probing the Interstellar Medium

Published:2003-09-05 Issue:5638 Volume:301 Page:1345-1347
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Caraveo P. A.¹²³⁴⁵,Bignami G. F.¹²³⁴⁵,DeLuca A.¹²³⁴⁵,Mereghetti S.¹²³⁴⁵,Pellizzoni A.¹²³⁴⁵,Mignani R.¹²³⁴⁵,Tur A.¹²³⁴⁵,Becker W.¹²³⁴⁵

Affiliation:

1. Istituto di Astrofisica Spaziale e Fisica Cosmica–Consiglio Nazionale della Richerche, Via Bassini, 15-20133 Milano, Italy.

2. Centre d'Etude Spatiale des Rayonnements/CNRS–Universite Paul Sabatier, 9 Avenue du Colonel Roche, Toulouse, France.

3. Università di Pavia, Dipartimento di Fisica Teorica e Nucleare, Via Ugo Bassi, 6 Pavia, Italy.

4. European Southern Observatory (ESO), Karl Schwarzschild Strasse 2, 85748 Garching, Germany.

5. Max Planck Institute fur Extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany.

Abstract

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 ∼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 Hα 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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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