The Origin of Cosmic Rays: How Their Composition Defines Their Sources and Sites and the Processes of Their Mixing, Injection, and Acceleration

Lingenfelter, R. E.

doi:10.3847/1538-4365/ab4b58

Cited by 18 publications

(12 citation statements)

References 164 publications

(319 reference statements)

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“…The Trans-Iron Galactic Element Recorder for the ISS (TIGERISS) Brian F. Rauch grains preferentially accelerated over volatile elements, and that injection into the GCR for both refractory and volatile elements appears to follow a charge dependence consistent with their grain sputtering cross sections (∝Z 2/3 ) [12]. This has been taken as evidence that a significant fraction of the cosmic rays originate in OB associations where material from earlier generations of massive stars (∼20%) mixes with ISM (∼80%) and is accelerated by subsequent supernovae.…”

Section: Pos(icrc2021)087mentioning

confidence: 99%

The Trans-Iron Galactic Element Recorder for the International Space Station (TIGERISS)

Rauch¹,

Walsh²,

Zober³

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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TIGERISS is an Ultra-Heavy Galactic Cosmic Ray (UHGCR) detector to be proposed to the NASA Astrophysics Pioneers Program capable of measuring the abundance relative to 26 Fe of every element from 5 B to 82 Pb. It is evolved from the LDB TIGER and SuperTIGER balloon instruments and the Heavy-Nuclei Explorer SMEX, and compared to its predecessors, TIGERISS will have a greatly improved capability to definitively identify UHGCR nuclei. This has been demonstrated in component accelerator tests at CERN, including silicon strip detectors in place of scintillators. The geometry factor for TIGERISS is estimated to be from 1.1 to 1.7 m 2 sr depending on the ISS attachment point, compared to 0.6 m 2 sr for TIGER. Within one-year TIGERISS would observe ∼27 56 Ba nuclei, a 20% statistically significant result comparable to the current SuperTIGER data set. Not requiring corrections for atmospheric interactions and scintillator saturation effects the TIGERISS results would be cleaner, and they would also make preliminary measurements to higher charges that will test models for cosmic-ray origins and acceleration. TIGERISS will measure UHGCR nuclei resulting from neutron-capture nucleosynthesis in heavy stars, supernovae, and binary neutron-star mergers and will probe the relative contribution of r-process elements to the cosmic rays.

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Section: Pos(icrc2021)087mentioning

confidence: 99%

The Trans-Iron Galactic Element Recorder for the International Space Station (TIGERISS)

Rauch¹,

Walsh²,

Zober³

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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“…[13], we study two different scenarios for the overabundance of GCR 22 Ne. The first one assumes that SN shocks in superbubbles (SBs) propagate in a medium enriched by W.-R. winds from the most massive stars of the parent OB associations [6,9,11]. The second scenario considers that stellar winds in massive star clusters are efficiently accelerated by wind termination shocks [WTSs;12].…”

Section: Pos(icrc2021)153mentioning

confidence: 99%

“…But exactly how W.-R. wind material is incorporated into GCRs has been a matter of debate for decades [e.g. 6,[8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The Origin of Galactic Cosmic Rays as Revealed by their Composition

Tatischeff¹,

Raymond²,

Duprat³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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Galactic cosmic-rays (GCRs) are thought to be accelerated in strong shocks induced by massive star winds and supernova explosions sweeping across the interstellar medium. But the phase of the interstellar medium from which the CRs are extracted has remained elusive up to now. We have studied in detail the GCR source composition deduced from recent measurements by the AMS-02, Voyager 1 and SuperTIGER experiments to obtain information on the composition, ionisation state and dust content of the GCR source reservoirs. The results of this data analysis suggest that the GCRs are mainly accelerated in superbubbles energised by the activity of massive star winds and supernova explosions. The resulting model explains well the measured abundances of all primary and mostly primary CRs from H to Zr, including the overabundance of 22 Ne.

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“…Kruijssen 2012, Ward et al 2019. Supernovae and powerful stellar winds in OB associations are the likely sources of CRs (e.g., Cesarsky and Montmerle 1983, Bykov 2001, Parizot et al 2004, Binns et al 2005, Grenier et al 2015, Lingenfelter 2018, Bykov et al 2018, Lingenfelter 2019).…”

Section: Cosmic Rays and Gamma-ray Emission In Ob Associationsmentioning

confidence: 99%

High-Energy Particles and Radiation in Star-Forming Regions

et al. 2020

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Non-thermal particles and high-energy radiation can play a role in the dynamical processes in star-forming regions and provide an important piece of the multiwavelength observational picture of their structure and components. Powerful stellar winds and supernovae in compact clusters of massive stars and OB associations are known to be favourable sites of high-energy particle acceleration and sources of non-thermal radiation and neutrinos. Namely, young massive stellar clusters are likely sources of the PeV (petaelectronvolt) regime cosmic rays (CRs). They can also be responsible for the cosmic ray composition, e.g., 22 Ne/ 20 Ne anomalous isotopic ratio in CRs. Efficient particle acceleration can be accompanied by super-adiabatic amplification of the fluctuating magnetic fields in the systems converting a part of kinetic power of the winds and supernovae into the magnetic energy through the CR-driven instabilities. The escape and CR propagation in the vicinity of the sources are affected by the non-linear CR feedback. These effects are expected to be important in starburst galaxies, which produce high-energy neutrinos and gamma-rays. We give a brief review of the theoreti-A. M. Bykov

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The Origin of Cosmic Rays: How Their Composition Defines Their Sources and Sites and the Processes of Their Mixing, Injection, and Acceleration

Abstract: any theory of the origin of cosmic rays cannot expect serious success unless it rests on a detailed analysis of the observed composition of primary cosmic radiation."

Cited by 18 publications

References 164 publications

The Trans-Iron Galactic Element Recorder for the International Space Station (TIGERISS)

The Trans-Iron Galactic Element Recorder for the International Space Station (TIGERISS)

The Origin of Galactic Cosmic Rays as Revealed by their Composition

High-Energy Particles and Radiation in Star-Forming Regions

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