X-ray Evolution of SNR 1987A: The Radial Expansion

Abstract

We present the evolution of the radial expansion of SNR 1987A as measured using Chandra X-ray observations taken over the last 10 years. To characterize the complex structure of the remnant and isolate the expansion measurement, we fit the images to several empirical models including: a simple circular torus, a torus with bilateral lobes, and a torus with four tangentially extended lobes. We discuss the results of this measure in the context of the overall evolution of the supernova remnant, for which we believe we have measured the end of the free expansion phase and its transition to the adiabatic phase (at least along the equatorial ring). The timing of this event is in agreement with early predictions of the remnant evolution.

Accepted for publication in ApJ, 21 pages, 4 figures, 3 tables

References in corpus (5)

• Evolutionary Status of SNR 1987A at the Age of Eighteen
• Fourier Modeling of the Radio Torus Surrounding Supernova 1987A
• Chandra LETG Observations of Supernova Remnant 1987A
• Chandra HETG Spectra of SN 1987A at 20 years
• SN Shock Evolution in the Circumstellar Medium surrounding SN 1987A

Cited by in corpus (32)

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• Chandra Observes the End of an Era SN 1987A
• Five Years of Mid-Infrared Evolution of the Remnant of SN 1987A: The Encounter Between the Blast Wave and the Dusty Equatorial Ring
• Spectral and morphological analysis of the remnant of Supernova 1987A with ALMA & ATCA
• The morphology of the ejecta in Supernova 1987A: a study over time and wavelength
• Bursting SN 1996cr's Bubble: Hydrodynamic and X-ray Modeling of its Circumstellar Medium
• Chandra observations of SN 1987A: the soft X-ray light curve revisited
• Late Spectral Evolution of the Ejecta and Reverse Shock in SN1987A
• HST-COS Observations of Hydrogen, Helium, Carbon and Nitrogen Emission from the SN 1987A Reverse Shock
• Evolution of the Radio Remnant of Supernova 1987A: Morphological Changes from Day 7000
• The Re-Acceleration of the Shock Wave in the Radio Remnant of SN 1987A
• Evolution of the Chandra CCD Spectra of SNR 1987A: Probing the Reflected-Shock Picture
• High Resolution X-Ray Spectroscopy of SN 1987A: Monitoring with XMM-Newton
• The First Decade of Science with Chandra and XMM-Newton
• Thermal Emission and Radioactive Lines, but No Pulsar, in the Broadband X-Ray Spectrum of Supernova 1987A
• The remnant of Supernova 1987A resolved at 3 mm wavelength
• A New Evolutionary Phase of Supernova Remnant 1987A
• Spectral Evolution of the X-Ray Remnant of SN 1987A: A High-Resolution $Chandra$ HETG Study
• The Post-impact Evolution of the X-ray Emitting Gas in SNR 1987A Viewed by XMM-Newton
• Latest Evolution of the X-Ray Remnant of SN 1987A: Beyond the Inner Ring
• Chandra Observations of WR147 Reveal a Double X-ray Source
• High Resolution X-ray Imaging of Supernova Remnant 1987A
• Kinematics of Supernova Remnants: Status of X-Ray Observations
• Three dimensional evolution of SN 1987A in a self-gravitating disk
• On the spherical-axial transition in supernova remnants
• The physics of the optical light curve in supernovae
• The physics of asymmetric supernovae and supernovae remnants
• Unusual X-ray Oxygen Line Ratios of SN 1987A Arising From the Absorption of Galactic Hot Interstellar Medium
• Energy Conservation in the thin layer approximation: II. The asymmetric classic case for supernovae remnants