31 citations · 46 across the 5 of their papers we have counts for
8 papers
Measuring the smearing of the Galactic 511 keV signal: positron propagation or supernova kicks?
Thomas Siegert, Roland M. Crocker, Oscar Macias +4
We use 15 years of -ray data from INTEGRAL/SPI in a refined investigation of the morphology of the Galactic bulge positron annihilation signal. Our spatial analysis confirms tha…
Prospects of direct detection of V gamma-rays from thermonuclear supernovae
Fiona H. Panther, Ivo R. Seitenzahl, Ashley J. Ruiter +3
Detection of gamma-rays emitted by radioactive isotopes synthesized in stellar explosions can give important insights into the processes that power transients such as supernovae, a…
Constraints on positron annihilation kinematics in the inner Galaxy
Thomas Siegert, Roland M. Crocker, Roland Diehl +4
The annihilation of cosmic positrons () with electrons in the interstellar medium (ISM) results in the strongest persistent gamma-ray line signal in the sky. For 50 years, thi…
Gamma-ray lines in modern astrophysics
Fiona H. Panther
Gamma-ray astronomy provides a direct window into the most violent, dynamic processes in the Universe. MeV gamma-ray astronomy in particular allows us to directly observe the proce…
SN1991bg-like supernovae are associated with old stellar populations
Fiona H. Panther, Ivo R. Seitenzahl, Ashley J. Ruiter +5
SN1991bg-like supernovae are a distinct subclass of thermonuclear supernovae (SNe Ia). Their spectral and photometric peculiarities indicate their progenitors and explosion mechani…
Positron Annihilation in the Galaxy
Carolyn A. Kierans, John F. Beacom, Steve Boggs +27
The 511 keV line from positron annihilation in the Galaxy was the first -ray line detected to originate from outside our solar system. Going into the fifth decade since the disc…