XMM-Newton observations of SN1987A

Abstract

(abridged) We report on XMM-Newton observations of SN1987A in the Large Magellanic Cloud. The large collecting area telescopes together with the European Photon Imaging Cameras (EPIC) provide X-ray spectra with unprecedented statistical quality and make it possible to investigate the spectral evolution during the brightening observed since the discovery in X-rays. High resolution spectra from the Reflection Grating Spectrometers yield a complementary view and allow us to perform more detailed investigations of prominent emission lines. The X-ray spectra were modeled with two-temperature emission components from a hot plasma in collisional ionization equilibrium and in non-equilibrium (NEI). We find a temperature for the equilibrium component of 0.24+/-0.02 keV in January 2000 and April 2001 which increased to 0.30+/-0.02 keV in May 2003 and also an indication for a temperature increase in the hot NEI component from \~2 keV to ~3 keV. Emission line ratios inferred from the RGS spectra suggest temperatures as low as 100 eV and an increase in the ionization state of oxygen and neon consistent with the observed temperature increases. The fast readout of the EPIC-pn instrument yields X-ray fluxes free of CCD pile-up effects which we used to normalize pile-up corrections for the published Chandra fluxes. The corrected X-ray light curve of SN1987A in the 0.5-2.0 keV energy band is best represented by a linear increase up to about day 4000 after the explosion and an exponential rise afterwards until the last published Chandra observation on day 6716. Modeling the light curve by emission from the inner ring which is approximated by a circular torus a central density n_H = 1.15x10^4 cm^-3 is found. In this model the forward shock has just passed the center of the torus.

9 pages, 5 figures, accepted for publication in Astronomy & Astrophysics

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• Limits from the Hubble Space Telescope on a Point Source in SN 1987A
• Supernova Remnant 1987A: Opening the Future by Reaching the Past
• The first broad-band X-ray images and spectra of the 30 Doradus region in the LMC
• Chandra Observations of Shock Kinematics in Supernova Remnant 1987A
• Constraints on the luminosity of the stellar remnant in SNR1987A
• Interrelation between radio and X-ray signatures of drifting subpulses in pulsars
• AGN in the XMM-Newton first-light image as probes for the interstellar medium in the LMC

Cited by in corpus (30)

• The eROSITA X-ray telescope on SRG
• The population of X-ray supernova remnants in the Large Magellanic Cloud
• Thermal and non-thermal emission from circumstellar interaction
• Supernova 1987A: a Template to Link Supernovae to their Remnants
• The fully developed remnant of a neutrino-driven supernova: Evolution of ejecta structure and asymmetries in SNR Cassiopeia A
• Chandra Observes the End of an Era SN 1987A
• Multi-frequency Radio Measurements of SN 1987A over 22 Years
• Hydrodynamic simulations unravel the progenitor-supernova-remnant connection in SN 1987A
• 3D MHD modeling of the expanding remnant of SN 1987A. Role of magnetic field and non-thermal radio emission
• High-Resolution X-ray Spectroscopy of SNR 1987A: Chandra LETG and HETG Observations in 2007
• Chandra observations of SN 1987A: the soft X-ray light curve revisited
• The 30-Year Search for the Compact Object in SN 1987A
• Chandra HETG Spectra of SN 1987A at 20 years
• Supernova remnants with magnetars: clues to magnetar formation
• 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
• XMM-Newton observations of SNR 1987A. II. The still increasing X-ray light curve and the properties of Fe K lines
• Probing Elemental Abundances in SNR 1987A Using XMM-Newton
• Additional evidence for a pulsar wind nebula in the heart of SN 1987A from multi-epoch X-ray data and MHD modeling
• A New Evolutionary Phase of Supernova Remnant 1987A
• SN 1987A : Tracing the flux decline and spectral evolution through a comparison of SRG/eROSITA and XMM-Newton observations
• Latest Evolution of the X-Ray Remnant of SN 1987A: Beyond the Inner Ring
• The Luminosity Phase Space of Galactic and Extragalactic X-ray Transients Out to Intermediate Redshifts
• Kinematics of Supernova Remnants: Status of X-Ray Observations
• Tracing the ejecta structure of SN 1987A: Insights and diagnostics from 3D MHD simulations
• Possible post-kick jets in SN 1987A
• Unusual X-ray Oxygen Line Ratios of SN 1987A Arising From the Absorption of Galactic Hot Interstellar Medium
• CANGAROO-III Search for Gamma Rays from SN 1987A and the Surrounding Field
• Measuring the initial mass of 44Ti in SN 1987A through the 44Sc emission line
• Bayesian Multi-wavelength Imaging of the LMC SN1987A with SRG/eROSITA