| Download | - View final version: Deciphering the nature of the pulsar wind nebula CTB 87 with XMM–Newton (PDF, 2.0 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1093/mnras/stz3270 |
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| Author | Search for: Guest, B.ORCID identifier: https://orcid.org/0000-0003-4078-0251; Search for: Safi-Harb, S.; Search for: MacMaster, A.; Search for: Kothes, R.1; Search for: Olmi, B.ORCID identifier: https://orcid.org/0000-0001-6022-8216; Search for: Amato, E.ORCID identifier: https://orcid.org/0000-0002-9881-8112; Search for: Bucciantini, N.; Search for: Arzoumanian, Z. |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Subject | ISM: individual (CTB 87 CXOU J201609.2+371110); ISM: supernova remnants |
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| Abstract | CTB 87 (G74.9+1.2) is an evolved supernova remnant (SNR) which hosts a peculiar pulsar wind nebula (PWN). The X-ray peak is offset from that observed in radio and lies towards the edge of the radio nebula. The putative pulsar, CXOU J201609.2+371110, was first resolved with Chandra and is surrounded by a compact and a more extended X-ray nebula. Here, we use a deep XMM–Newton observation to examine the morphology and evolutionary stage of the PWN and to search for thermal emission expected from a supernova shell or reverse shock interaction with supernova ejecta. We do not find evidence of thermal X-ray emission from the SNR and place an upper limit on the electron density of 0.05 cm⁻³ for a plasma temperature kT ∼ 0.8 keV. The morphology and spectral properties are consistent with a ∼20-kyr-old relic PWN expanding into a stellar wind-blown bubble. We also present the first X-ray spectral index map from the PWN and show that we can reproduce its morphology by means of 2D axisymmetric relativistic hydrodynamical simulations. |
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| Publication date | 2019-11-23 |
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| Publisher | Oxford University Press
Royal Astronomical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 1dca8fb6-5bed-4084-ba1a-0034d71bfaf7 |
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| Record created | 2020-10-26 |
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| Record modified | 2020-10-28 |
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