2025ApJ...982...81M

Query : 2025ApJ...982...81M

2025ApJ...982...81M - Astrophys. J., 982, 81 (2025/April-1)

Let There Be Neutrons! Hadronic Photoproduction from a Large Flux of High-energy Photons.

MUMPOWER M.R., LEE T.-S.H., LLOYD-RONNING N., BARKER B.L., GROSS A., CUPP S. and MILLER J.M.

Abstract (from CDS):

We propose that neutrons may be generated in high-energy, high-flux photon environments via photo-induced reactions on pre-existing baryons. These photohadronic interactions are expected to occur in astrophysical jets and surrounding material. Historically, these reactions have been attributed to the production of high-energy cosmic rays and neutrinos. We estimate the photoproduction off of protons in the context of gamma-ray bursts, where it is expected there will be sufficient baryonic material that may be encompassing or entrained in the jet. We show that typical stellar baryonic material, even material completely devoid of neutrons, can become inundated with neutrons in situ via hadronic photoproduction. Consequently, this mechanism provides a means for collapsars and other astrophysical sites containing substantial flux of high-energy photons to be favorable for neutron-capture nucleosynthesis.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Gamma-ray bursts - Nuclear astrophysics - Nucleosynthesis - R-process - Compact objects

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRB 191019A gB 22 40 05.87 -17 19 40.8           ~ 55 0

Query : 2025ApJ...982...81M

Basic data :
GRB 191019A -- Gamma-ray Burst
Other object types: otypes_help 		gB (GRB)
ICRS coord. (ep=J2000) : 		22 40 05.87 -17 19 40.8 (X-ray) [ 1800 1800 0 ] D SWIFT
FK4 coord. (ep=B1950 eq=1950) : 		22 37 24.80 -17 35 20.8 [ 1800 1800 0 ]
Gal coord. (ep=J2000) : 		043.93792 -58.17598 [ 1800 1800 0 ]
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Identifiers (1) :
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GRB 191019A

References (55 between 1850 and 2026) (Total 55)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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