Distances to Recent Near-Earth Supernovae from Geological and Lunar 60Fe [PDF]
The Astrophysical Journal, 2023 Near-Earth supernova blasts which engulf the solar system have left traces of their ejecta in the geological and lunar records. There is now a wealth of data on live radioactive ^60 Fe pointing to a supernova at 3 Myr ago, as well as the recent discovery
Adrienne F. Ertel, Brian D. Fields
doaj +2 more sources
Simulations of 60Fe entrained in ejecta from a near-Earth supernova: effects of observer motion [PDF]
, 2022 Recent studies have shown that live (not decayed) radioactive 60Fe is present in deep-ocean samples, Antarctic snow, lunar regolith, and cosmic rays. 60Fe represents supernova (SN) ejecta deposited in the Solar System around 3Myr ago, and recently an ...
Evgenii Chaikin +3 more
openalex +3 more sources
Possibility of Secondary i- and s-processes Following r-process in the Collapsar Jet
The Astrophysical Journal LettersThe slow and intermediate neutron-capture processes, s - and i -processes, are believed to occur in asymptotic giant branch stars to provide half of the heavy atomic nuclei with A ≥ 90. We suggest a possibility that certain types of outflows found in the
Zhenyu He +7 more
doaj +2 more sources
NEOWISE-R Caught the Luminous SN 2023ixf in Messier 101 [PDF]
The Astrophysical JournalDuring routine survey imaging, the reactivated Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE-R) serendipitously caught the Type II supernova SN 2023ixf in Messier 101 on the rise, starting day 3.6 through day 10.9, and again on the ...
Schuyler D. Van Dyk +18 more
doaj +2 more sources
On deep-ocean as a fossil of a near-earth supernova [PDF]
, 1999 Brian D. Fields, John Ellis
openalex +3 more sources
Is the PAMELA anomaly caused by supernova explosions near the Earth? [PDF]
, 2009 We show that the anomaly of the positron fraction observed by the PAMELA experiment can be attributed to recent supernova explosion(s) in a dense gas cloud near the Earth. Protons are accelerated around the supernova remnant.
Yutaka Fujita +3 more
openalex +3 more sources
A Pre-Gaia Census of Nearby Stellar Groups [PDF]
Proceedings of the International Astronomical Union, 2015 The nearest, youngest groups of stars to the Sun provide important samples of age-dated stars for studying circumstellar disk evolution, imaged exoplanets, and brown dwarfs.
Mamajek, Eric E.
core +2 more sources
Numerical studies on the link between radioisotopic signatures on Earth and the formation of the Local Bubble. II. Advanced modelling of interstellar 26Al, 53Mn, 60Fe, and 244Pu influxes as traces of past supernova activity in the solar neighbourhood [PDF]
Astronomy & Astrophysics, 2023 Measurements of long-lived radioisotopes provide a means, completely independent of other observational channels, to draw conclusions about near-Earth supernovae (SNe) and thus the origin of the Local Bubble (LB).
M. Schulreich +2 more
semanticscholar +1 more source
Photons from Neutrinos: The Gamma-Ray Echo of a Supernova Neutrino Burst [PDF]
Astrophysical Journal, 2023 When a star undergoes core collapse, a vast amount of energy is released in a ∼10 s long burst of neutrinos of all species. Inverse beta decay in the star’s hydrogen envelope causes an electromagnetic cascade that ultimately results in a flare of gamma ...
C. Lunardini +5 more
semanticscholar +1 more source
Particle acceleration in winds of star clusters [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The origin of cosmic rays in our Galaxy remains a subject of active debate. While supernova remnant (SNR) shocks are often invoked as the sites of acceleration, it is now widely accepted that the difficulties of such sources in reaching PeV energies ...
G. Morlino +3 more
semanticscholar +1 more source