THE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054
We have detected an Hα bow shock nebula around PSR J1741-2054, a pulsar discovered through its GeV γ-ray pulsations. The pulsar is only ∼1'.5 behind the leading edge of the shock. Optical spectroscopy shows that the nebula is non-radiative, dominated by Balmer emission. The Hα images and spectr...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2010
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| _version_ | 1826296030598004736 |
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| author | Romani, R Shaw, MS Camilo, F Cotter, G Sivakoff, G |
| author_facet | Romani, R Shaw, MS Camilo, F Cotter, G Sivakoff, G |
| author_sort | Romani, R |
| collection | OXFORD |
| description | We have detected an Hα bow shock nebula around PSR J1741-2054, a pulsar discovered through its GeV γ-ray pulsations. The pulsar is only ∼1'.5 behind the leading edge of the shock. Optical spectroscopy shows that the nebula is non-radiative, dominated by Balmer emission. The Hα images and spectra suggest that the pulsar wind momentum is equatorially concentrated and implies a pulsar space velocity ≈150kms-1, directed 15° ± 10° out of the plane of the sky. The complex Hα profile indicates that different portions of the post-shock flow dominate line emission as gas moves along the nebula and provide an opportunity to study the structure of this unusual slow non-radiative shock under a variety of conditions. CXO ACIS observations reveal an X-ray pulsar wind nebula within this nebula, with a compact ∼2.5 equatorial structure and a trail extending several arcminutes behind. Together these data support a close (≤0.5 kpc) distance, a spin geometry viewed edge-on, and highly efficient γ-ray production for this unusual, energetic pulsar. © 2010. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| first_indexed | 2024-03-07T04:10:04Z |
| format | Journal article |
| id | oxford-uuid:c788687b-4536-4acf-994a-56fbac6583ee |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:10:04Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:c788687b-4536-4acf-994a-56fbac6583ee2022-03-27T06:45:48ZTHE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c788687b-4536-4acf-994a-56fbac6583eeEnglishSymplectic Elements at Oxford2010Romani, RShaw, MSCamilo, FCotter, GSivakoff, GWe have detected an Hα bow shock nebula around PSR J1741-2054, a pulsar discovered through its GeV γ-ray pulsations. The pulsar is only ∼1'.5 behind the leading edge of the shock. Optical spectroscopy shows that the nebula is non-radiative, dominated by Balmer emission. The Hα images and spectra suggest that the pulsar wind momentum is equatorially concentrated and implies a pulsar space velocity ≈150kms-1, directed 15° ± 10° out of the plane of the sky. The complex Hα profile indicates that different portions of the post-shock flow dominate line emission as gas moves along the nebula and provide an opportunity to study the structure of this unusual slow non-radiative shock under a variety of conditions. CXO ACIS observations reveal an X-ray pulsar wind nebula within this nebula, with a compact ∼2.5 equatorial structure and a trail extending several arcminutes behind. Together these data support a close (≤0.5 kpc) distance, a spin geometry viewed edge-on, and highly efficient γ-ray production for this unusual, energetic pulsar. © 2010. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| spellingShingle | Romani, R Shaw, MS Camilo, F Cotter, G Sivakoff, G THE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054 |
| title | THE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054 |
| title_full | THE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054 |
| title_fullStr | THE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054 |
| title_full_unstemmed | THE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054 |
| title_short | THE BALMER-DOMINATED BOW SHOCK AND WIND NEBULA STRUCTURE OF gamma-RAY PULSAR PSR J1741-2054 |
| title_sort | balmer dominated bow shock and wind nebula structure of gamma ray pulsar psr j1741 2054 |
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