Catching Element Formation In The Act
Abstract
Gamma-ray astronomy explores the most energetic photons in nature to address some of the most pressing puzzles in contemporary astrophysics. It encompasses a wide range of objects and phenomena: stars, supernovae, novae, neutron stars, stellar-mass black holes, nucleosynthesis, the interstellar medium, cosmic rays and relativistic-particle acceleration, and the evolution of galaxies. MeV gamma-rays provide a unique probe of nuclear processes in astronomy, directly measuring radioactive decay, nuclear de-excitation, and positron annihilation. The substantial information carried by gamma-ray photons allows us to see deeper into these objects, the bulk of the power is often emitted at gamma-ray energies, and radioactivity provides a natural physical clock that adds unique information. New science will be driven by time-domain population studies at gamma-ray energies. This science is enabled by next-generation gamma-ray instruments with one to two orders of magnitude better sensitivity, larger sky coverage, and faster cadence than all previous gamma-ray instruments. This transformative capability permits: (a) the accurate identification of the gamma-ray emitting objects and correlations with observations taken at other wavelengths and with other messengers; (b) construction of new gamma-ray maps of the Milky Way and other nearby galaxies where extended regions are distinguished from point sources; and (c) considerable serendipitous science of scarce events -- nearby neutron star mergers, for example. Advances in technology push the performance of new gamma-ray instruments to address a wide set of astrophysical questions.
Cite
@article{arxiv.1902.02915,
title = {Catching Element Formation In The Act},
author = {Chris L. Fryer and Frank Timmes and Aimee L. Hungerford and Aaron Couture and Fred Adams and Wako Aoki and Almudena Arcones and David Arnett and Katie Auchettl and Melina Avila and Carles Badenes and Eddie Baron and Andreas Bauswein and John Beacom and Jeff Blackmon and Stephane Blondin and Peter Bloser and Steve Boggs and Alan Boss and Terri Brandt and Eduardo Bravo and Ed Brown and Peter Brown and Steve Bruenn. Carl Budtz-Jorgensen and Eric Burns and Alan Calder and Regina Caputo and Art Champagne and Roger Chevalier and Alessandro Chieffi and Kelly Chipps and David Cinabro and Ondrea Clarkson and Don Clayton and Alain Coc and Devin Connolly and Charlie Conroy and Benoit Cote and Sean Couch and Nicolas Dauphas and Richard James deBoer and Catherine Deibel and Pavel Denisenkov and Steve Desch and Luc Dessart and Roland Diehl and Carolyn Doherty and Inma Dominguez and Subo Dong and Vikram Dwarkadas and Doreen Fan and Brian Fields and Carl Fields and Alex Filippenko and Robert Fisher and Francois Foucart and Claes Fransson and Carla Frohlich and George Fuller and Brad Gibson and Viktoriya Giryanskaya and Joachim Gorres and Stephane Goriely and Sergei Grebenev and Brian Grefenstette and Evan Grohs and James Guillochon and Alice Harpole and Chelsea Harris and J. Austin Harris and Fiona Harrison and Dieter Hartmann and Masa-aki Hashimoto and Alexander Heger and Margarita Hernanz and Falk Herwig and Raphael Hirschi and Raphael William Hix and Peter Hoflich and Robert Hoffman and Cole Holcomb and Eric Hsiao and Christian Iliadis and Agnieszka Janiuk and Thomas Janka and Anders Jerkstrand and Lucas Johns and Samuel Jones and Jordi Jose and Toshitaka Kajino and Amanda Karakas and Platon Karpov and Dan Kasen and Carolyn Kierans and Marc Kippen and Oleg Korobkin and Chiaki Kobayashi and Cecilia Kozma and Saha Krot and Pawan Kumar and Irfan Kuvvetli and Alison Laird and Martin Laming and Josefin Larsson and John Lattanzio and James Lattimer and Mark Leising and Annika Lennarz and Eric Lentz and Marco Limongi and Jonas Lippuner and Eli Livne and Nicole Lloyd-Ronning and Richard Longland and Laura A. Lopez and Maria Lugaro and Alexander Lutovinov and Kristin Madsen and Chris Malone and Francesca Matteucci and Julie McEnery and Zach Meisel and Bronson Messer and Brian Metzger and Bradley Meyer and Georges Meynet and Anthony Mezzacappa and Jonah Miller and Richard Miller and Peter Milne and Wendell Misch and Lee Mitchell and Philipp Mosta and Yuko Motizuki and Bernhard Muller and Matthew Mumpower and Jeremiah Murphy and Shigehiro Nagataki and Ehud Nakar and Ken'ichi Nomoto and Peter Nugent and Filomena Nunes and Brian O'Shea and Uwe Oberlack and Steven Pain and Lucas Parker and Albino Perego and Marco Pignatari and Gabriel Martinez Pinedo and Tomasz Plewa and Dovi Poznanski and William Priedhorsky and Boris Pritychenko and David Radice and Enrico Ramirez-Ruiz and Thomas Rauscher and Sanjay Reddy and Ernst Rehm and Rene Reifarth and Debra Richman and Paul Ricker and Nabin Rijal and Luke Roberts and Friedrich Ropke and Stephan Rosswog and Ashley J. Ruiter and Chris Ruiz and Daniel Wolf Savin and Hendrik Schatz and Dieter Schneider and Josiah Schwab and Ivo Seitenzahl and Ken Shen and Thomas Siegert and Stuart Sim and David Smith and Karl Smith and Michael Smith and Jesper Sollerman and Trevor Sprouse and Artemis Spyrou and Sumner Starrfield and Andrew Steiner and Andrew W. Strong and Tuguldur Sukhbold and Nick Suntzeff and Rebecca Surman and Toru Tanimori and Lih-Sin The and Friedrich-Karl Thielemann and Alexey Tolstov and Nozomu Tominaga and John Tomsick and Dean Townsley and Pelagia Tsintari and Sergey Tsygankov and David Vartanyan and Tonia Venters and Tom Vestrand and Jacco Vink and Roni Waldman and Lifang Wang and Xilu Wang and MacKenzie Warren and Christopher West and J. Craig Wheeler and Michael Wiescher and Christoph Winkler and Lisa Winter and Bill Wolf and Richard Woolf and Stan Woosley and Jin Wu and Chris Wrede and Shoichi Yamada and Patrick Young and Remco Zegers and Michael Zingale and Simon Portegies Zwart},
journal= {arXiv preprint arXiv:1902.02915},
year = {2019}
}
Comments
14 pages including 3 figures