Global X-Ray Properties of the Vela and Puppis A Supernova Remnants

被引：5
|
作者：
Silich, E. M. [1 ]
Kaaret, P. [1 ]
Zajczyk, A. [1 ,2 ,3 ]
LaRocca, D. M. [1 ]
Bluem, J. [1 ]
Ringuette, R. [1 ]
Jahoda, K. [2 ]
Kuntz, K. D. [4 ]
机构：
[1] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA
[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[3] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, 1000 Hilltop Circle, Baltimore, MD 21250 USA
[4] Johns Hopkins Univ, Henry A Rowland Dept Phys & Astron, Baltimore, MD 21218 USA
来源：
ASTRONOMICAL JOURNAL | 2020年 / 160卷 / 01期
关键词：
X-ray sources; Supernova remnants; X-ray observatories; EMISSION;
D O I：
10.3847/1538-3881/ab93d3
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Vela and Puppis A supernova remnants (SNRs) comprise a large emission region of similar to 8 degrees diameter in the soft X-ray sky. The HaloSat CubeSat mission provides the first soft X-ray (0.4-7 keV) observation of the entire Vela SNR and Puppis A SNR region with a single pointing and moderate spectral resolution. HaloSat observations of the Vela SNR are best fit with a two-temperature thermal plasma model consisting of a cooler component with kT(1) = 0.19(-0.01)(+0.01) keV in collisional ionization equilibrium and a hotter component with kT(2) = 1.06(-0.27)(+0.45) keV in nonequilibrium ionization. Observations of the Puppis A SNR are best fit with a single-component plane-parallel shocked plasma model with kT = 0.86(-0.05)(+0.06) keV in nonequilibrium ionization. For the first time, we find the total X-ray luminosities of both components of the Vela SNR spectrum in the 0.5-7 keV energy band to be L-X = 4.4(-1.4)(+1.4) X 10(34) erg s(-1) for the cooler component and L-X = 4.4(-1.5)(+1.8) X 10(34) erg s(-1) for the hotter component. We find the total X-ray luminosities of the Vela and Puppis A SNRs to be L-X = 8.4 x 10(34) erg s(-1) and L-X = 6.7(-0.9)(+1.1) X 10(36) erg s(-1).
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页数：7
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