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RESEARCH PRODUCT
Dust Production and Particle Acceleration in Supernova 1987A Revealed with ALMA
Ivan Marti-vidalCherry NgDavid N. BurrowsRichard MccrayPeter LundqvistRemy IndebetouwRemy IndebetouwPatrice BouchetMasa LakicevicJ. M. MarcaideGeoffrey C. ClaytonMargaret MeixnerMargaret MeixnerBryan GaenslerBryan GaenslerGiovanna ZanardoMikako MatsuuraEli DwekLister Staveley-smithLister Staveley-smithKnox S. LongRoger A. ChevalierG. SonnebornM. J. BarlowRobert P. KirshnerMaarten BaesClaes FranssonCatherine VlahakisJ. T. Van LoonSangwook Parksubject
MetallicityAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesSynchrotron radiationAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsSubmillimeter ArrayEARLY UNIVERSEindividual (1987A) [supernovae]Magellanic CloudsAstrophysics::Solar and Stellar AstrophysicsEjectaSupernova remnantSolar and Stellar Astrophysics (astro-ph.SR)Astrophysics::Galaxy AstrophysicsQBHigh Energy Astrophysical Phenomena (astro-ph.HE)PhysicsISM [galaxies]supernova remnants [ISM]Astronomy and AstrophysicsOPTICAL-PROPERTIESHUBBLE-SPACE-TELESCOPEAstrophysics - Astrophysics of GalaxiesEVOLUTIONGalaxyParticle accelerationEJECTASupernovaPhysics and AstronomyAstrophysics - Solar and Stellar AstrophysicsSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)REVERSE SHOCKREMNANTAstrophysics::Earth and Planetary AstrophysicsEMISSIONAstrophysics - High Energy Astrophysical PhenomenaMASSIVE STARSSN 1987Adescription
Supernova (SN) explosions are crucial engines driving the evolution of galaxies by shock heating gas, increasing the metallicity, creating dust, and accelerating energetic particles. In 2012 we used the Atacama Large Millimeter/Submillimeter Array to observe SN 1987A, one of the best-observed supernovae since the invention of the telescope. We present spatially resolved images at 450um, 870um, 1.4mm, and 2.8mm, an important transition wavelength range. Longer wavelength emission is dominated by synchrotron radiation from shock-accelerated particles, shorter wavelengths by emission from the largest mass of dust measured in a supernova remnant (>0.2Msun). For the first time we show unambiguously that this dust has formed in the inner ejecta (the cold remnants of the exploded star's core). The dust emission is concentrated to the center of the remnant, so the dust has not yet been affected by the shocks. If a significant fraction survives, and if SN 1987A is typical, supernovae are important cosmological dust producers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-12-14 |