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 language | English (US) |
|---|---|
| Article number | 119 |
| Journal | Astrophysical Journal |
| Volume | 868 |
| Issue number | 2 |
| DOIs | |
| State | Published - Dec 1 2018 |
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All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
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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 journal › Article
TY - JOUR
T1 - The Variable Pulsar Wind Nebula of PSR J1809-1917
AU - Klingler, Noel
AU - Kargaltsev, Oleg
AU - Pavlov, George G.
AU - Posselt, Bettina
PY - 2018/12/1
Y1 - 2018/12/1
N2 - 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.
AB - 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.
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U2 - 10.3847/1538-4357/aae0f1
DO - 10.3847/1538-4357/aae0f1
M3 - Article
AN - SCOPUS:85057891065
VL - 868
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 119
ER -