The Variable Pulsar Wind Nebula of PSR J1809-1917

Noel Klingler, Oleg Kargaltsev, George G. Pavlov, Bettina Posselt

Research output: Contribution to journalArticle

Abstract

PSR J1809-1917 is a young (τ = 51 kyr) energetic ( erg s-1) radio pulsar powering a pulsar wind nebula (PWN). We report on the results of three Chandra X-ray Observatory observations that show that the PWN consists of a small (∼20″) bright compact nebula (CN) and faint extended emission seen up to 2′ from the pulsar. The CN is elongated in the northeast-southwest direction and exhibits morphological and flux variability on a timescale of a few months. We also find evidence of small arcsecond-scale jets extending from the pulsar along the same direction, and exhibiting a hard power-law (PL) spectrum with photon index Γjet = 1.2 ± 0.1. The more extended emission and CN share the same symmetry axis, which is also aligned with the direction toward the TeV γ-ray source HESS J1809-193, supporting their association. The spectrum of the extended nebula (EN) fits an absorbed PL with about the same slope as that of the CN, ΓCN ≈ ΓEN = 1.55 ± 0.09; no spectral changes across the EN's 2 pc extent are seen. The total PWN 0.5-8 keV luminosity is L PWN ≈ 9 1032 erg s-1, about half of which is due to the EN.

Original languageEnglish (US)
Article number119
JournalAstrophysical Journal
Volume868
Issue number2
DOIs
StatePublished - Dec 1 2018

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nebulae
pulsars
erg
power law
symmetry
energetics
observatory
radio
timescale
rays
observatories
luminosity
slopes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Klingler, Noel ; Kargaltsev, Oleg ; Pavlov, George G. ; Posselt, Bettina. / The Variable Pulsar Wind Nebula of PSR J1809-1917. In: Astrophysical Journal. 2018 ; Vol. 868, No. 2.
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The Variable Pulsar Wind Nebula of PSR J1809-1917. / Klingler, Noel; Kargaltsev, Oleg; Pavlov, George G.; Posselt, Bettina.

In: Astrophysical Journal, Vol. 868, No. 2, 119, 01.12.2018.

Research output: Contribution to journalArticle

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