The Expansion of the Young Supernova Remnant 0509-68.7 (N103B)

Abstract

We present a second epoch of {\it Chandra} observations of the Type Ia LMC SNR 0509-68.7 (N103B) obtained in 2017. When combined with the earlier observations from 1999, we have a 17.4-year baseline with which we can search for evidence of the remnant's expansion. Although the lack of strong point source detections makes absolute image alignment at the necessary accuracy impossible, we can measure the change in the diameter and the area of the remnant, and find that it has expanded by an average velocity of 4170 (2860, 5450) km s${}^{-1}$. This supports the picture of this being a young remnant; this expansion velocity corresponds to an undecelerated age of 850 yr, making the real age somewhat younger, consistent with results from light echo studies. Previous infrared observations have revealed high densities in the western half of the remnant, likely from circumstellar material, so it is likely that the real expansion velocity is lower on that side of the remnant and higher on the eastern side. A similar scenario is seen in Kepler's SNR. N103B joins the rare class of Magellanic Cloud SNRs with measured proper motions.

arXiv commentAccepted for publication in ApJ Letters

References in corpus (19)

• An eclipsing binary distance to the Large Magellanic Cloud accurate to 2 per cent
• Echoes from Ancient Supernovae in the Large Magellanic Cloud
• Chandra Multiwavelength Project X-ray Point Source Catalog
• Using the X-ray Morphologies of Young Supernova Remnants to Constrain Explosion Type, Ejecta Distribution, and Chemical Mixing
• Electron Heating and Cosmic Rays at a Supernova Shock from Chandra X-ray Observations of E0102.2-7219
• The Stellar Ancestry of Supernovae in the Magellanic Clouds - I. the Most Recent Supernovae in the Large Magellanic Cloud
• The Slow X-Ray Expansion of the Northwestern Rim of the Supernova Remnant RX J0852.0-4622
• The Origin of Kepler's Supernova Remnant
• The Kinematics of Kepler's Supernova Remnant as revealed by Chandra
• The Radial Structure of SNR N103B
• Dust in a Type Ia Supernova Progenitor: Spitzer Spectroscopy of Kepler's Supernova Remnant
• Cosmic-Ray Acceleration Efficiency vs Temperature Equilibration: the Case of SNR 0509-67.5
• Forward Shock Proper Motions of Kepler's Supernova Remnant
• X-ray Proper Motions and Shock Speeds along the Northwest Rim of SN 1006
• The Three-Dimensional Expansion of the Ejecta from Tycho's Supernova Remnant
• Spitzer Observations of the Type Ia Supernova Remnant N103B: Kepler's Older Cousin?
• Swift, XMM-Newton, and NuSTAR observations of PSR J2032+4127/MT91 213
• Cr-K Emission Line as a Constraint on the Progenitor Properties of Supernova Remnants
• Integral Field Spectroscopy of Balmer-Dominated Shocks in the Magellanic Cloud Supernova Remnant N103B

Cited by in corpus (15)

• A black hole detected in the young massive LMC cluster NGC 1850
• Electron-Ion Temperature Ratio in Astrophysical Shocks
• From supernova to supernova remnant: comparison of thermonuclear explosion models
• Quantitative Age Estimation of Supernova Remnants and Associated Pulsars
• The Expansion of the Forward Shock of 1E 0102.2-7219 in X-rays
• Common envelope to explosion delay time of type Ia supernovae
• Discovery of Double-Ring Structure in the Supernova Remnant N103B: Evidence for Bipolar Winds from a Type Ia Supernova Progenitor
• Common envelope to explosion delay time distribution (CEEDTD) of type Ia supernovae
• Radio Emission from Interstellar Shocks: Young Type Ia Supernova Remnants and the Case of N 103B in the Large Magellanic Cloud
• Imagery and UV Spectroscopy of the LMC Supernova Remnant N103B Using HST
• Locating the CSM Emission within the Type Ia Supernova Remnant N103B
• Rapid Expansion of the Young Type Ia Supernova Remnant 0519-69.0: More Evidence for a Circumstellar Shell
• An X-ray Proper Motion Study of the LMC SNR 0509-67.5
• Direct Collapse to Precursors of Supermassive Black Hole Seeds:Radiation-feedback-generated Outflows
• The double detonation of a double degenerate system, from Type Ia supernova explosion to its supernova remnant