Identification of the central compact object in the young supernova remnant 1E

Frédéric P.A. Vogt*, Elizabeth S. Bartlett, Ivo R. Seitenzahl, Michael A. Dopita, Parviz Ghavamian, Ashley J. Ruiter, Jason P. Terry

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    Abstract

    Oxygen-rich young supernova remnants 1 are valuable objects for probing the outcome of nucleosynthetic processes in massive stars, as well as the physics of supernova explosions. Observed within a few thousand years after the supernova explosion 2, these systems contain fast-moving oxygen-rich and hydrogen-poor filaments visible at optical wavelengths: fragments of the progenitor's interior expelled at a few thousand kilometres per second during the supernova explosion. Here we report the identification of the compact object in the supernova remnant 1E 0102.2-7219 in reprocessed Chandra X-ray Observatory data, enabled by the discovery of a ring-shaped structure visible primarily in optical recombination lines of Ne i and O i. The optical ring has a radius of (2.10 ± 0.35)″ â‰i (0.63 ± 0.11) pc, and is expanding at a velocity of $$90.{5}-{-30}^{+40}$$ 90. 5-30 + 40 km s-1. It surrounds an X-ray point source with an intrinsic X-ray luminosity L i (1.2-2.0 keV)=(1.4 ± 0.2) × 1033 erg s-1. The energy distribution of the source indicates that this object is an isolated neutron star: A central compact object akin to those present in the Cas A 3-5 and Pup A 6 supernova remnants, and the first of its kind to be identified outside of our Galaxy.

    Original languageEnglish
    Pages (from-to)465-471
    Number of pages7
    JournalNature Astronomy
    Volume2
    Issue number6
    DOIs
    Publication statusPublished - 1 Jun 2018

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