Supernova remnant W51C: optical and X-ray emission analysis

Author:

Reyes-Iturbide J1ORCID,Ramírez-Ballinas I1ORCID,Rosado M1ORCID,Núñez D1,Ambrocio-Cruz P2ORCID,Arias L3,Gabbasov R4ORCID

Affiliation:

1. Instituto de Astronomía, Universidad Nacional Autonóma de México , Apdo. Postal 70-264, 04510 Mexico City, Mexico

2. Escuela Superior de Tlahuelilpan, Universidad Autónoma del Estado de Hidalgo. Ex-Hacienda de San Servando. Col. Centro , C.P. 42780 Tlahuelilpan, Hgo., Mexico

3. Universidad Iberoamericana , Prol. Paseo de la Reforma 880, 01219 Mexico City, Mexico

4. Universidad Autónoma Metropolitana, Unidad Azcapotzalco , Av. San Pablo 180, Reynosa Tamaulipas, 02200 Mexico City, Mexico

Abstract

ABSTRACT We present observations of the optical and X-ray emission from the Galactic supernova remnant W51C. From [S ii] Fabry–Pérot interferometry and H α and [S ii] images we detect filaments that are part of the optical counterpart of the supernova remnant. We obtain the kinematic distance to W51C, showing that it is one of the shortest distances reported in the literature. We also estimate other physical properties such as the velocity of the shock induced in the cloudlets emitted at optical wavelengths and the electron density of those cloudlets. From XMM–Newton observatory archival data, we obtain images of the diffuse X-ray emission of this supernova remnant. The spectrum of the X-ray emission is explored to estimate X-ray parameters such as luminosity and temperature of the hot plasma in the supernova remnant. We fit a thermal model with a plasma temperature of 1.4 keV for an X-ray thermal luminosity of 2.0 × 1036 erg s−1. With the parameters described above we test the model proposed by White & Long to explain the mixed morphology observed in W51C. We obtain an initial energy of the supernova explosion of 8.4 × 1050 erg and an age of 13 000 yr. The derived initial energy is typical of supernova remnants, but in disagreement with respect to older estimations that found higher values and suggested that W51C was the result of the explosion of two supernovae.

Funder

TNM

SEP

UNAM

CONACYT

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. The Galactic supernova remnant CTB 1: optical and X-ray emission analysis;Monthly Notices of the Royal Astronomical Society;2023-10-28

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