Atacama Compact Array Observations of the Pulsar-Wind Nebula of SNR 0540-69.3

Abstract

We present observations of the pulsar-wind nebula (PWN) region ofSNR 0540-69.3. The observations were made with the Atacama Compact Array (ACA) in Bands 4 and 6. We also add radio observations from the Australia Compact Array (ATCA) at 3 cm. For 1.449 - 233.50 GHz we obtain a synchrotron spectrum $F_{\nu }\propto {\nu }^{-{\alpha }_{\nu }}$, with the spectral index ${\alpha }_{\nu }=0.17\pm 0.02$. To conclude how this joins the synchrotron spectrum at higher frequencies we include hitherto unpublished AKARI mid-infrared data, and evaluate published data in the ultraviolet (UV), optical and infrared (IR). In particular, some broad-band filter data in the optical must be discarded from our analysis due to contamination by spectral line emission. For the UV/IR part of the synchrotron spectrum, we arrive at ${\alpha }_{\nu }=0.87_{-0.10}^{+0.08}$. There is room for $2.5\times 10^{-3}$ solar masses of dust with temperature $\sim 55$ K if there are dual breaks in the synchrotron spectrum, one around $\sim 9\times 10^{10}$ Hz, and another at $\sim 2\times 10^{13}$ Hz. The spectral index then changes at $\sim 9\times 10^{10}$ Hz from ${\alpha }_{\nu }=0.14\pm 0.07$ in the radio, to ${\alpha }_{\nu }=0.35_{+0.05}^{-0.07}$ in the millimetre to far-IR range. The ACA Band 6 data marginally resolves the PWN. In particular, the strong emission 1.5" south-west of the pulsar, seen at other wavelengths, and resolved in the 3-cm data with its 0.8" spatial resolution, is also strong in the millimeter range. The ACA data clearly reveal the supernova remnant shell 20-35 arcsec west of the pulsar, and for the shell we derive ${\alpha }_{\nu }=0.64\pm 0.05$ for the range $8.6-145$~GHz.

arXiv commentMNRAS, accepted

References in corpus (39)

• Dust in the Early Universe: Dust Formation in the Ejecta of Population III Supernovae
• The Infrared Camera (IRC) for AKARI - Design and Imaging Performance
• Herschel Detects a Massive Dust Reservoir in Supernova 1987A
• Acceleration of Particles at the Termination Shock of a Relativistic Striped Wind
• Modeling the spectral evolution of PWNe inside SNRs
• Dust Production and Particle Acceleration in Supernova 1987A Revealed with ALMA
• A stubbornly large mass of cold dust in the ejecta of Supernova 1987A
• A Cool Dust Factory in the Crab Nebula: A Herschel Study of the Filaments
• A Dynamical Model for the Evolution of a Pulsar Wind Nebula inside a Non-Radiative Supernova Remnant
• Extreme particle acceleration in magnetic reconnection layers. Application to the gamma-ray flares in the Crab Nebula
• The dust mass in Cassiopeia A from a spatially resolved Herschel analysis
• Radio detection of LAT PSRs J1741-2054 and J2032+4127: no longer just gamma-ray pulsars
• Time-dependent modeling of pulsar wind nebulae: Study on the impact of the diffusion-loss approximations
• The dust and gas content of the Crab Nebula
• Pulsar-wind nebulae and magnetar outflows: observations at radio, X-ray, and gamma-ray wavelengths
• Diffusion in Pulsar Wind Nebulae: An Investigation using Magnetohydrodynamic and Particle Transport Models
• Hydrogen and helium in the spectra of Type Ia supernovae
• A Massive Shell of Supernova-formed Dust in SNR G54.1+0.3
• Crab Nebula gamma-ray flares as relativistic reconnection minijets
• A spatially resolved plerionic X-ray nebula around PSR B0540-69
• The Evolution of Dust Mass in the Ejecta of SN1987A
• Spectral and morphological analysis of the remnant of Supernova 1987A with ALMA & ATCA
• Ejecta, Dust, and Synchrotron Radiation in B0540-69.3: A More Crab-Like Remnant than the Crab
• The young pulsar PSR B0540-69.3 and its synchrotron nebula in the optical and X-rays
• A Dust Twin of Cas A: Cool Dust and 21-micron Silicate Dust Feature in the Supernova Remnant G54.1+0.3
• Interpreting Crab Nebula synchrotron spectrum: two acceleration mechanisms
• Measuring Dust Production in the Small Magellanic Cloud Core-Collapse Supernova Remnant 1E 0102.2-7219
• A Catalogue of Galactic Supernova Remnants in the far-infrared: revealing ejecta dust in pulsar wind nebulae
• HST/WFPC2 observations of the LMC pulsar PSR B0540-69
• The brightening of the pulsar wind nebula of PSR B0540--69 after its spin-down rate transition
• 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
• AKARI Infrared Camera Survey of the Large Magellanic Cloud. I. Point Source Catalog
• The near-infrared detection of PSR B0540-69 and its nebula
• Spectral evolution and polarization of variable structures in the pulsar wind nebula of PSR B0540-69.3
• Optical observations of the young supernova remnant SNR 0540-69.3 and its pulsar
• HST multi-epoch imaging of the PSR B0540-69 system unveils a highly dynamic synchrotron nebula
• The PSR J1124-5916 wind nebula in the near-infrared
• The first ultraviolet detection of the Large Magellanic Cloud pulsar PSR B0540-69 and its multi-wavelength properties

Cited by in corpus (8)

• Clumps and rings of ejecta in SNR 0540-69.3 as seen in 3D
• Kinematics, structure and abundances of supernova remnant 0540-69.3
• Spitzer and Herschel studies of dust in supernova remnants in the Small Magellanic Cloud
• Pulsar Wind Nebulae
• Spatial Variations and Breaks in the Optical-NIR spectra of the Pulsar and PWN in SNR 0540-69.3
• Near-infrared evolution of the equatorial ring of SN 1987A
• Intermediate-luminosity red transients: Spectrophotometric properties and connection to electron-capture supernova explosions
• A Spectroscopic Study of Supernova Remnants with the Infrared Space Observatory