The Thermal X-ray Emitting Shell of LMC Supernova Remnant 0540-693

Abstract

We use data from the Advanced CCD Imaging Spectrometer (ACIS) on the Chandra X-ray Observatory to image the shell surrounding the pulsar B0540-69, and to measure its spectral properties. Weak emission line features, notably of Fe, Mg and Si, indicate that the shell is composed primarily of ambient material heated by the blast wave. The shell emission in the east is faint and circular in appearance, with a temperature and ionization age of approximately 5 keV and 10^10 cm^-3 s, respectively. The emission in the west is brighter and has a more complex, distorted morphology, and is fitted with significantly lower average temperatures and higher ionization ages. An image with photon energies above 2 keV shows two hard arcs of emission located diametrically opposite each other at the outer boundary of the remnant shell; the spectra from these regions could include a substantial nonthermal component.

ApJ, in press; 12 LaTeX pages with 3 postscript figures

References in corpus (9)

• Supernova Remnants in the Sedov Expansion Phase: Thermal X-Ray Emission
• Discovery of Spatial and Spectral Structure in the X-Ray Emission from the Crab Nebula
• Balmer-Dominated Spectra of Nonradiative Shocks in the Cygnus Loop, RCW 86 and Tycho Supernova Remnants
• Thermal X-ray Emission and Cosmic Ray Production in Young Supernova Remnants
• Electron Heating and Cosmic Rays at a Supernova Shock from Chandra X-ray Observations of E0102.2-7219
• Separating Thermal and Nonthermal X-Rays in Supernova Remnants I: Total Fits to SN 1006 AD
• A spatially resolved plerionic X-ray nebula around PSR B0540-69
• Chandra Observations of the Young Pulsar PSR B0540-69
• Detection of X-ray line emission from the shell of SNR B0540-69.3 with XMM-Newton RGS

Cited by in corpus (19)

• Supernova remnants: the X-ray perspective
• Young core collapse supernova remnants and their supernovae
• Observational signatures of particle acceleration in supernova remnants
• On the size distribution of supernova remnants in the Magellanic Clouds
• The Stellar Ancestry of Supernovae in the Magellanic Clouds - I. the Most Recent Supernovae in the Large Magellanic Cloud
• A multiwavelength study on the high-energy behaviour of Fermi/LAT pulsars
• The young pulsar PSR B0540-69.3 and its synchrotron nebula in the optical and X-rays
• Ejecta, Dust, and Synchrotron Radiation in B0540-69.3: A More Crab-Like Remnant than the Crab
• A Deep Chandra Observation of the Oxygen-Rich Supernova Remnant 0540-69.3 in the Large Magellanic Cloud
• A multi-wavelength look at the young plerionic supernova remnant 0540-69.3
• CHANDRA Observations of the X-ray Halo around the Crab Nebula
• A Chandra Study of the Interstellar Metallicity in the Large Magellanic Cloud Using Supernova Remnants
• Clumps and rings of ejecta in SNR 0540-69.3 as seen in 3D
• Population synthesis of young isolated neutron stars: the effect of fallback disk accretion and magnetic field evolution
• Optical observations of the young supernova remnant SNR 0540-69.3 and its pulsar
• Kinematics of Supernova Remnants: Status of X-Ray Observations
• Kinematics, structure and abundances of supernova remnant 0540-69.3
• Spatial Variations and Breaks in the Optical-NIR spectra of the Pulsar and PWN in SNR 0540-69.3
• Early phases of different types of isolated neutron star