Gamma-ray line emission from SN1987A

  title={Gamma-ray line emission from SN1987A},
  author={Steven M. Matz and Gerald Harvey Share and Mark D. Leising and Edward L. Chupp and W.T. Vestrandt and William R. Purcell and Mark S. Strickman and Claus Reppin},
The gamma-ray spectrometer (GRS) on NASA's Solar Maximum Mission satellite (SMM) has observed a significant (>5δ) net line flux at ˜847 keV in the background-subtracted spectrum of SN1987A—accumulated between 1 August and 31 October 1987. This is the energy of the strong gamma-ray line from decay of 56Co, which was predicted1,3 to be seen from supernovae. The inferred average line flux during this period is ˜(1.0±0.25) x 10−3 photons cm−2 s−1 at an energy of 843 ± 5 keV. This feature cannot be… Expand
Resolution of the 1,238-keV γ-ray line from supernova 1987A
WE report observations of supernova 1987A from the maiden flight of the Gamma-Ray Imaging Spectrometer (GRIS). SN1987A was observed for a period of 11.1 hours on 1 May 1988. Line emission at 1,238Expand
Gamma-Ray Lines from SN1987A and Interpretation
Gamma-ray lines from the decay of 56Co in the SN1987A remnant have been detected by satellite and balloon experiments. The observations directly confirm the basic theoretical tenet that 56Ni wasExpand
Recent results on celestial gamma radiation from SMM
During close to ten years of highly successful operation, the Gamma Ray Spectrometer (GRS) on the Solar Maximum Mission (SMM) made significant celestial measurements, in addition to the discovery andExpand
On the variability of the X-ray emission from supernova 1987A
The hard-X-ray emission observed above 10 keV from SN1987A by the X-ray astronomy satellite Ginga1 and by the KVANT module2 on the MIR station is reasonably well explained3,4 by ComptonExpand
Gamma-ray lines from SN1987A
Gamma-ray spectroscopy of SN1987A has provided us for the first time with a direct confirmation of the existence of explosive nucleosynthesis. Characteristic lines from the decay of radioactive 56NiExpand
SPI observations of the diffuse ^60Fe emission in the Galaxy
Gamma-ray line emission from radioactive decay of 60Fe provides constraints on nucleosynthesis in massive stars and supernovae. The spectrometer SPI on board INTEGRAL has accumulated nearly threeExpand
Gamma-ray Line Astronomy
Gamma-ray lines from radioactive isotopes, ejected into interstellar space by cosmic nucleosynthesis events, are observed with new space telescopes. The Compton Observatory had provided a sky surveyExpand
Gamma-ray line measurements from supernova explosions
  • R. Diehl
  • Physics
  • Proceedings of the International Astronomical Union
  • 2017
Abstract Gamma ray lines are expected to be emitted as part of the afterglow of supernova explosions, because radioactive decay of freshly synthesised nuclei occurs. Significant radioactive gamma rayExpand
High Resolution Observations of Gamma-Ray Line Profiles from SN 1987A
Supernova 1987A was a unique opportunity for gamma-ray astronomers to observe freshly synthesized radioactive material from a type II supernova. Gamma-ray lines were first detected by theExpand
Pre-Discovery Hard X- and Gamma-Ray Luminosity of SN 1987A from Optical Spectra
Modelling of the emergent hard X- and gamma-ray emission in SN1987a is an important diagnostic tool for 56Co distribution in the envelope as well as for the envelope structure (SUNYAEV et al. [1];Expand


Discovery of hard X-ray emission from supernova 1987A
We report the discovery of hard X-rays from the region of the supernova SN1987A in the Large Magellanic Cloud. The observations were made from the Mir-Kvant observatory 'Röntgen'. Hard X-rays wereExpand
The gamma ray spectrometer for the Solar Maximum Mission
The Solar Maximum Mission Gamma Ray Experiment (SMM GRE) utilizes an actively shielded, multicrystal scintillation spectrometer to measure the flux of solar gamma rays. The instrument provides aExpand
Discovery of an unusual hard X-ray source in the region of supernova 1987A
We have discovered a new hard X-ray source near supernova 1987 A, in the Large Magellanic Cloud, from the X-ray astronomy satellite Ginga. The present error box of 0.2° × 0.3° includes the supernova.Expand
Jets in supernova 1987A?