Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A

Abstract

The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There has been no direct observation of this compact object. In this work, we observe the supernova remnant with JWST spectroscopy finding narrow infrared emission lines of argon and sulphur. The line emission is spatially unresolved and blueshifted in velocity relative to the supernova rest frame. We interpret the lines as gas illuminated by a source of ionizing photons located close to the center of the expanding ejecta. Photoionization models show that the line ratios are consistent with ionization by a cooling neutron star or pulsar wind nebula. The velocity shift could be evidence for a neutron star natal kick.

Authors version of manuscript published in Science on 22 Feb 2024

References in corpus (38)

• Gaia Data Release 3: Summary of the content and survey properties
• Nucleosynthesis and Remnants in Massive Stars of Solar Metallicity
• A distance to the Large Magellanic Cloud that is precise to one per cent
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope I. Overview of the instrument and its capabilities
• CHIANTI -- an atomic database for emission lines -- Paper XVI: Version 10, further extensions
• The JWST Early Release Observations
• JWST MIRI flight performance: The Medium-Resolution Spectrometer
• Radiative recombination data for modelling dynamic finite-density plasmas
• Hydrodynamics of core-collapse supernovae and their progenitors
• A stubbornly large mass of cold dust in the ejecta of Supernova 1987A
• Neutron star kicks by the gravitational tug-boat mechanism in asymmetric supernova explosions: progenitor and explosion dependence
• Condensation of dust in the ejecta of type II-P supernovae
• The Triple-Ring Nebula around SN1987A: Fingerprint of a binary merger
• The timing and location of dust formation in the remnant of SN 1987A
• High angular resolution ALMA images of dust and molecules in the SN 1987A ejecta
• Central Compact Objects in Supernova Remnants
• Interstellar and Ejecta Dust in the Cas A Supernova Remnant
• Broadband X-ray Imaging and Spectroscopy of the Crab Nebula and Pulsar with NuSTAR
• NS 1987A in SN 1987A
• Non-Thermal X-ray Properties of Rotation Powered Pulsars and Their Wind Nebulae
• A Massive Shell of Supernova-formed Dust in SNR G54.1+0.3
• Ejecta, Dust, and Synchrotron Radiation in B0540-69.3: A More Crab-Like Remnant than the Crab
• Matter Mixing in Aspherical Core-collapse Supernovae: Three-dimensional Simulations with Single Star and Binary Merger Progenitor Models for SN 1987A
• Time evolution of the line emission from the inner circumstellar ring of SN 1987A and its hot spots
• Heat blanketing envelopes of neutron stars
• A blue depression in the optical spectra of M dwarfs
• Do Central Compact Objects have Carbon Atmospheres?
• Indication of a Pulsar Wind Nebula in the hard X-ray emission from SN 1987A
• Pulsar Wind Bubble Blowout from a Supernova
• JWST NIRSpec observations of Supernova 1987A -- from the inner ejecta to the reverse shock
• Additional evidence for a pulsar wind nebula in the heart of SN 1987A from multi-epoch X-ray data and MHD modeling
• Formation, distribution, and IR emission of dust in the clumpy ejecta of Type II-P core-collapse supernovae, in isotropic and anisotropic scenarios
• A 3D view of molecular hydrogen in Supernova 1987A
• The morphology of the ejecta of SN 1987A at 31 years from 1150 to 10000 Å
• Optical properties of non-stoichiometric amorphous silicates with application to circumstellar dust extinction
• Standard cooling of rapidly rotating isolated neutron stars in 2D
• Spectral Break of Energetic Pulsar Wind Nebulae Detected with Wideband X-ray Observations
• Collisional- and photo-excitations of Ca IV including strong 3.2 $\mu$m emission line

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• Astrophysical Axion Bounds: The 2024 Edition
• The Science of the Einstein Telescope
• Supernova axions convert to gamma-rays in magnetic fields of progenitor stars
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• A 3D Simulation of a Type II-P Supernova: from Core Bounce to Beyond Shock Breakout
• Supernova bounds on new scalars from resonant and soft emission
• Latest Evolution of the X-Ray Remnant of SN 1987A: Beyond the Inner Ring
• The long-term influence of a magnetar power in stripped-envelope supernovae. Radiative-transfer modeling of He-star explosions from 1 to 10 years
• Gravitational Wave Searches for Post-Merger Remnants of GW170817 and GW190425
• Tracing the ejecta structure of SN 1987A: Insights and diagnostics from 3D MHD simulations
• The TRAPUM Large Magellanic Cloud pulsar survey with MeerKAT I: Survey setup and first seven pulsar discoveries
• Natal kicks of compact objects
• Thorne-Żytkow Objects
• Asymmetric emissions of neutrinos in the cooling of rotating proto-neutron stars
• VLBI Observations of SN 2012au Reveal a Compact Radio Source a Decade Post Explosion
• Searches for Continuous Gravitational Waves from Supernova Remnants in the first part of the LIGO-Virgo-KAGRA Fourth Observing run
• The position of SN 1987A
• Multimessenger Constraints on the Central Engine in SN 2023ixf: Neutron Star or Black Hole?
• A Black Hole is Born: 3D GRMHD Simulation of Black Hole Formation from Core-Collapse