Evidence for GeV cosmic rays from white dwarfs in the local cosmic ray spectra and in the gamma-ray emissivity of the inner Galaxy

Kamae, Tuneyoshi; Lee, Shiu -Hang; Makishima, Kazuo; Shibata, Shinpei; Shigeyama, Toshikazu

doi:10.1093/pasj/psy010

Title: Evidence for GeV cosmic rays from white dwarfs in the local cosmic ray spectra and in the gamma-ray emissivity of the inner Galaxy

Journal Article · Wed Feb 28 00:00:00 EST 2018 · Publications of the Astronomical Society of Japan

DOI:https://doi.org/10.1093/pasj/psy010· OSTI ID:1458419

Kamae, Tuneyoshi ^[1]; Lee, Shiu -Hang ^[2]; Makishima, Kazuo ^[3]; Shibata, Shinpei ^[4]; Shigeyama, Toshikazu ^[5]

The Univ. of Tokyo, Tokyo (Japan); Stanford Univ., Menlo Park, CA (United States)
Kyoto Univ., Kyoto (Japan)
RIKEN, Saitama (Japan)
Yamagata Univ., Yamagata (Japan)
The Univ. of Tokyo, Tokyo (Japan)

Here, recent observations found that electrons are accelerated to ~10 GeV and emit synchrotron hard X-rays in two magnetic white dwarfs (WDs), also known as cataclysmic variables (CVs). In nova outbursts of WDs, multi-GeV gamma-rays were detected, implying that protons are accelerated to 100 GeV or higher. In recent optical surveys, the WD density is found to be higher near the Sun than in the Galactic disk by a factor ~2.5. The cosmic rays (CRs) produced by local CVs and novae will accumulate in the local bubble for 10⁶–10⁷ yr. On these findings, we search for CRs from historic CVs and novae in the observed CR spectra. We model the CR spectra at the heliopause as sums of Galactic and local components based on observational data as much as possible. The initial Galactic CR electron and proton spectra are deduced from the gamma-ray emissivity, the local electron spectrum from the hard X-ray spectra at the CVs, and the local proton spectrum from gamma-ray spectra at novae. These spectral shapes are then expressed in a simple set of polynomial functions of CR energy and regressively fitted until the high-energy (>100 GeV) CR spectra near Earth and the Voyager-1 spectra at the heliopause are reproduced. We then extend the modeling to nuclear CR spectra and find that one spectral shape fits all local nuclear CRs, and that the apparent hardening of the nuclear CR spectra is caused by the roll-down of local nuclear spectra around 100–200 GeV. All local CR spectra populate a limited energy band below 100–200 GeV and enhance gamma-ray emissivity below ~10 GeV. Such an enhancement is observed in the inner Galaxy, suggesting the CR fluxes from CVs and novae are substantially higher there.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515; 15K05098

OSTI ID:: 1458419

Journal Information:: Publications of the Astronomical Society of Japan, Vol. 70, Issue 2; ISSN 0004-6264

Publisher:: Astronomical Society of JapanCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 1 work

Citation information provided by
Web of Science

References (79)

The contribution of chemical abundances in nova ejecta to the interstellar medium Li, Fanger; Zhu, Chunhua; Lü, Guoliang Publications of the Astronomical Society of Japan, Vol. 68, Issue 3 https://doi.org/10.1093/pasj/psw030	journal	April 2016
p, He, and C to Fe cosmic-ray primary fluxes in diffusion models: Source and transport signatures on fluxes and ratios⋆ Putze, A.; Maurin, D.; Donato, F. Astronomy & Astrophysics, Vol. 526 https://doi.org/10.1051/0004-6361/201016064	journal	January 2011
Broadband Spectral Analysis of the Galactic Ridge X-Ray Emission Yuasa, Takayuki; Makishima, Kazuo; Nakazawa, Kazuhiro The Astrophysical Journal, Vol. 753, Issue 2 https://doi.org/10.1088/0004-637X/753/2/129	journal	June 2012
A Model of White Dwarf Pulsar ar Scorpii Geng, Jin-Jun; Zhang, Bing; Huang, Yong-Feng The Astrophysical Journal, Vol. 831, Issue 1 https://doi.org/10.3847/2041-8205/831/1/L10	journal	October 2016
The interstellar cosmic-ray electron spectrum from synchrotron radiation and direct measurements Strong, A. W.; Orlando, E.; Jaffe, T. R. Astronomy & Astrophysics, Vol. 534 https://doi.org/10.1051/0004-6361/201116828	journal	September 2011
The Palomar/MSU Nearby Star Spectroscopic Survey. IV. The Luminosity Function in the Solar Neighborhood and M Dwarf Kinematics Reid, I. Neill; Gizis, John E.; Hawley, Suzanne L. The Astronomical Journal, Vol. 124, Issue 5 https://doi.org/10.1086/343777	journal	November 2002
Energy Spectrum of Cosmic-Ray Electrons at TeV Energies Aharonian, F.; Akhperjanian, A. G.; Barres de Almeida, U. Physical Review Letters, Vol. 101, Issue 26 https://doi.org/10.1103/PhysRevLett.101.261104	journal	December 2008
A radio-pulsing white dwarf binary star Marsh, T. R.; Gänsicke, B. T.; Hümmerich, S. Nature, Vol. 537, Issue 7620 https://doi.org/10.1038/nature18620	journal	July 2016
Abundances of the elements: Meteoritic and solar Anders, Edward; Grevesse, Nicolas Geochimica et Cosmochimica Acta, Vol. 53, Issue 1 https://doi.org/10.1016/0016-7037(89)90286-X	journal	January 1989
Solar Modulation of Cosmic Rays Potgieter, Marius Living Reviews in Solar Physics, Vol. 10 https://doi.org/10.12942/lrsp-2013-3	journal	January 2013
The baseline composition of solar energetic particles Meyer, J. -P. The Astrophysical Journal Supplement Series, Vol. 57 https://doi.org/10.1086/191000	journal	January 1985
The 25 parsec local white dwarf population Holberg, J. B.; Oswalt, T. D.; Sion, E. M. Monthly Notices of the Royal Astronomical Society, Vol. 462, Issue 3 https://doi.org/10.1093/mnras/stw1357	journal	June 2016
Three-Dimensional Distribution of the ISM in the Milky Way Galaxy: II. The Molecular Gas Disk Nakanishi, Hiroyuki; Sofue, Yoshiaki Publications of the Astronomical Society of Japan, Vol. 58, Issue 5 https://doi.org/10.1093/pasj/58.5.847	journal	October 2006
Solar Modulation of Galactic Cosmic Rays Gleeson, L. J.; Axford, W. I. The Astrophysical Journal, Vol. 154 https://doi.org/10.1086/149822	journal	November 1968
Dark matter and pulsar origins of the rising cosmic ray positron fraction in light of new data from the AMS Cholis, Ilias; Hooper, Dan Physical Review D, Vol. 88, Issue 2 https://doi.org/10.1103/PhysRevD.88.023013	journal	July 2013
New calculation of the atmospheric neutrino flux in a three-dimensional scheme Honda, M.; Kajita, T.; Kasahara, K. Physical Review D, Vol. 70, Issue 4 https://doi.org/10.1103/PhysRevD.70.043008	journal	August 2004
Chemical and Physical Parameters from X-Ray High-Resolution Spectra of the Galactic nova v959 mon Peretz, U.; Orio, M.; Behar, E. The Astrophysical Journal, Vol. 829, Issue 1 https://doi.org/10.3847/0004-637X/829/1/2	journal	September 2016
Precision Measurement of the Helium Flux in Primary Cosmic Rays of Rigidities 1.9 GV to 3 TV with the Alpha Magnetic Spectrometer on the International Space Station Aguilar, M.; Aisa, D.; Alpat, B. Physical Review Letters, Vol. 115, Issue 21 https://doi.org/10.1103/PhysRevLett.115.211101	journal	November 2015
THE SPECTRUM OF ISOTROPIC DIFFUSE GAMMA-RAY EMISSION BETWEEN 100 MeV AND 820 GeV Ackermann, M.; Ajello, M.; Albert, A. The Astrophysical Journal, Vol. 799, Issue 1 https://doi.org/10.1088/0004-637X/799/1/86	journal	January 2015
Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station Aguilar, M.; Aisa, D.; Alvino, A. Physical Review Letters, Vol. 113, Issue 12 https://doi.org/10.1103/PhysRevLett.113.121102	journal	September 2014
High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–500 GeV with the Alpha Magnetic Spectrometer on the International Space Station Accardo, L.; Aguilar, M.; Aisa, D. Physical Review Letters, Vol. 113, Issue 12 https://doi.org/10.1103/PhysRevLett.113.121101	journal	September 2014
Three-Dimensional Distribution of the ISM in the Milky Way Galaxy: I. The H i Disk Nakanishi, Hiroyuki; Sofue, Yoshiaki Publications of the Astronomical Society of Japan, Vol. 55, Issue 1 https://doi.org/10.1093/pasj/55.1.191	journal	February 2003
Gamma-ray novae as probes of relativistic particle acceleration at non-relativistic shocks Metzger, B. D.; Finzell, T.; Vurm, I. Monthly Notices of the Royal Astronomical Society, Vol. 450, Issue 3 https://doi.org/10.1093/mnras/stv742	journal	May 2015
Observational Report on the Classical Nova KT Eridani Imamura, Kazuyoshi; Tanabe, Kenji Publications of the Astronomical Society of Japan, Vol. 64, Issue 6 https://doi.org/10.1093/pasj/64.6.120	journal	December 2012
The Local Bubble in the interstellar medium and the origin of the low energy cosmic rays Erlykin, A. D.; Machavariani, S. K.; Wolfendale, A. W. Advances in Space Research, Vol. 59, Issue 2 https://doi.org/10.1016/j.asr.2016.10.017	journal	January 2017
Connecting synchrotron, cosmic rays and magnetic fields in the plane of the Galaxy: Synchrotron, cosmic rays and magnetic fields Jaffe, T. R.; Banday, A. J.; Leahy, J. P. Monthly Notices of the Royal Astronomical Society, Vol. 416, Issue 2 https://doi.org/10.1111/j.1365-2966.2011.19114.x	journal	June 2011
The Galactic nova rate Revisited Shafter, A. W. The Astrophysical Journal, Vol. 834, Issue 2 https://doi.org/10.3847/1538-4357/834/2/196	journal	January 2017
An asymmetric shock wave in the 2006 outburst of the recurrent nova RS Ophiuchi O'Brien, T. J.; Bode, M. F.; Porcas, R. W. Nature, Vol. 442, Issue 7100 https://doi.org/10.1038/nature04949	journal	July 2006
The origin of galactic cosmic rays Blasi, Pasquale The Astronomy and Astrophysics Review, Vol. 21, Issue 1 https://doi.org/10.1007/s00159-013-0070-7	journal	November 2013
Bayesian Analysis of Cosmic ray Propagation: Evidence Against Homogeneous Diffusion Jóhannesson, G.; Austri, R. Ruiz de; Vincent, A. C. The Astrophysical Journal, Vol. 824, Issue 1 https://doi.org/10.3847/0004-637X/824/1/16	journal	June 2016
An Expanding Shell and Synchrotron Jet in RS Ophiuchi Rupen, Michael P.; Mioduszewski, Amy J.; Sokoloski, Jennifer L. The Astrophysical Journal, Vol. 688, Issue 1 https://doi.org/10.1086/525555	journal	November 2008
Anomalous Galactic Cosmic Rays in the Framework of AMS-02 Khiali, Behrouz; Haino, Sadakazu; Feng, Jie The Astrophysical Journal, Vol. 835, Issue 2 https://doi.org/10.3847/1538-4357/835/2/229	journal	January 2017
INTEGRAL constraints on the Galactic hard X-ray background from the Milky Way anticenter Krivonos, R.; Tsygankov, S.; Revnivtsev, M. Astronomy & Astrophysics, Vol. 537 https://doi.org/10.1051/0004-6361/201118053	journal	January 2012
White Dwarf Cosmochronology in the Solar Neighborhood Tremblay, P. -E.; Kalirai, J. S.; Soderblom, D. R. The Astrophysical Journal, Vol. 791, Issue 2 https://doi.org/10.1088/0004-637X/791/2/92	journal	July 2014
Suzaku Discovery of Hard X-Ray Pulsations from a Rotating Magnetized White Dwarf, AEAquarii Terada, Yukikatsu; Hayashi, Takayuki; Ishida, Manabu Publications of the Astronomical Society of Japan, Vol. 60, Issue 2 https://doi.org/10.1093/pasj/60.2.387	journal	April 2008
Voyager 1 Observes Low-Energy Galactic Cosmic Rays in a Region Depleted of Heliospheric Ions Stone, E. C.; Cummings, A. C.; McDonald, F. B. Science, Vol. 341, Issue 6142 https://doi.org/10.1126/science.1236408	journal	June 2013
The Potential of White Dwarf Cosmochronology Fontaine, G.; Brassard, P.; Bergeron, P. Publications of the Astronomical Society of the Pacific, Vol. 113, Issue 782 https://doi.org/10.1086/319535	journal	April 2001
IMPLICATIONS OF VOYAGER 1 OBSERVATIONS BEYOND THE HELIOPAUSE FOR THE LOCAL INTERSTELLAR ELECTRON SPECTRUM Bisschoff, D.; Potgieter, M. S. The Astrophysical Journal, Vol. 794, Issue 2 https://doi.org/10.1088/0004-637X/794/2/166	journal	October 2014
Energy Spectra of Cosmic-Ray Nuclei at high Energies Ahn, H. S.; Allison, P.; Bagliesi, M. G. The Astrophysical Journal, Vol. 707, Issue 1 https://doi.org/10.1088/0004-637X/707/1/593	journal	November 2009
Explaining the cosmic-ray e+/(e−+e+) and ratios using a steady-state injection model Lee, S. -H.; Kamae, T.; Baldini, L. Astroparticle Physics, Vol. 35, Issue 4 https://doi.org/10.1016/j.astropartphys.2011.08.002	journal	November 2011
Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station Aguilar, M.; Aisa, D.; Alpat, B. Physical Review Letters, Vol. 114, Issue 17 https://doi.org/10.1103/PhysRevLett.114.171103	journal	April 2015
Cosmic-Ray Proton and Helium Spectra from the First Cream Flight Yoon, Y. S.; Ahn, H. S.; Allison, P. S. The Astrophysical Journal, Vol. 728, Issue 2 https://doi.org/10.1088/0004-637X/728/2/122	journal	January 2011
LOCAL H i EMISSIVITY MEASURED WITH FERMI -LAT AND IMPLICATIONS FOR COSMIC-RAY SPECTRA Casandjian, Jean-Marc The Astrophysical Journal, Vol. 806, Issue 2 https://doi.org/10.1088/0004-637X/806/2/240	journal	June 2015
Superbubbles and energetic particles in the Galaxy: I. Collective effects of particle acceleration Parizot, E.; Marcowith, A.; van der Swaluw, E. Astronomy & Astrophysics, Vol. 424, Issue 3 https://doi.org/10.1051/0004-6361:20041269	journal	September 2004
Discrepant Hardening Observed in Cosmic-Ray Elemental Spectra Ahn, H. S.; Allison, P.; Bagliesi, M. G. The Astrophysical Journal, Vol. 714, Issue 1 https://doi.org/10.1088/2041-8205/714/1/L89	journal	April 2010
PAMELA Measurements of Cosmic-Ray Proton and Helium Spectra Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A. Science, Vol. 332, Issue 6025 https://doi.org/10.1126/science.1199172	journal	March 2011
Review of Particle Physics Nakamura, K. Journal of Physics G: Nuclear and Particle Physics, Vol. 37, Issue 7A https://doi.org/10.1088/0954-3899/37/7A/075021	journal	July 2010
Testing universality of cosmic-ray acceleration with proton/helium data from AMS and Voyager-1 Tomassetti, Nicola Advances in Space Research, Vol. 60, Issue 4 https://doi.org/10.1016/j.asr.2016.10.024	journal	August 2017
Cosmic-Ray Electron Flux Measured by the PAMELA Experiment between 1 and 625 GeV Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A. Physical Review Letters, Vol. 106, Issue 20 https://doi.org/10.1103/PhysRevLett.106.201101	journal	May 2011
Cosmic-Ray Positron Energy Spectrum Measured by PAMELA Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A. Physical Review Letters, Vol. 111, Issue 8 https://doi.org/10.1103/PhysRevLett.111.081102	journal	August 2013
The White Dwarfs Within 20 Parsecs of the sun: Kinematics and Statistics Sion, Edward M.; Holberg, J. B.; Oswalt, Terry D. The Astronomical Journal, Vol. 138, Issue 6 https://doi.org/10.1088/0004-6256/138/6/1681	journal	October 2009
Galactic Cosmic Rays from Supernova Remnants. II. Shock Acceleration of Gas and Dust Ellison, Donald C.; Drury, Luke O'C.; Meyer, Jean‐Paul The Astrophysical Journal, Vol. 487, Issue 1 https://doi.org/10.1086/304580	journal	September 1997
Production and Propagation of Cosmic‐Ray Positrons and Electrons Moskalenko, I. V.; Strong, A. W. The Astrophysical Journal, Vol. 493, Issue 2 https://doi.org/10.1086/305152	journal	February 1998
Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station Aguilar, M.; Ali Cavasonza, L.; Alpat, B. Physical Review Letters, Vol. 119, Issue 25 https://doi.org/10.1103/PhysRevLett.119.251101	journal	December 2017
Magnetic White Dwarfs Ferrario, Lilia; de Martino, Domitilla; Gänsicke, Boris T. Space Science Reviews, Vol. 191, Issue 1-4 https://doi.org/10.1007/s11214-015-0152-0	journal	May 2015
Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni Abdo, A. A.; Ackermann, M.; Ajello, M. Science, Vol. 329, Issue 5993 https://doi.org/10.1126/science.1192537	journal	August 2010
GALACTIC COSMIC RAYS IN THE LOCAL INTERSTELLAR MEDIUM: VOYAGER 1 OBSERVATIONS AND MODEL RESULTS Cummings, A. C.; Stone, E. C.; Heikkila, B. C. The Astrophysical Journal, Vol. 831, Issue 1 https://doi.org/10.3847/0004-637X/831/1/18	journal	October 2016
Know your Neighborhood: a Detailed Model Atmosphere Analysis of Nearby White Dwarfs Giammichele, N.; Bergeron, P.; Dufour, P. The Astrophysical Journal Supplement Series, Vol. 199, Issue 2 https://doi.org/10.1088/0067-0049/199/2/29	journal	March 2012
Cosmic-ray hardenings in light of AMS-02 data Ohira, Yutaka; Kawanaka, Norita; Ioka, Kunihito Physical Review D, Vol. 93, Issue 8 https://doi.org/10.1103/PhysRevD.93.083001	journal	April 2016
ON THE FERMI LARGE AREA TELESCOPE SURPLUS OF DIFFUSE GALACTIC GAMMA-RAY EMISSION Völk, H. J.; Berezhko, E. G. The Astrophysical Journal, Vol. 777, Issue 2 https://doi.org/10.1088/0004-637X/777/2/149	journal	October 2013
MEASUREMENTS OF THE RELATIVE ABUNDANCES OF HIGH-ENERGY COSMIC-RAY NUCLEI IN THE TeV/NUCLEON REGION Ahn, H. S.; Allison, P. S.; Bagliesi, M. G. The Astrophysical Journal, Vol. 715, Issue 2 https://doi.org/10.1088/0004-637X/715/2/1400	journal	May 2010
A new look at the cosmic ray positron fraction Boudaud, M.; Aupetit, S.; Caroff, S. Astronomy & Astrophysics, Vol. 575 https://doi.org/10.1051/0004-6361/201425197	journal	February 2015
Origin of the Proton-To-Helium Ratio Anomaly in Cosmic rays Tomassetti, Nicola The Astrophysical Journal, Vol. 815, Issue 1 https://doi.org/10.1088/2041-8205/815/1/L1	journal	December 2015
CHANDRA PULSAR SURVEY (ChaPS) Kargaltsev, Oleg; Durant, Martin; Pavlov, George G. The Astrophysical Journal Supplement Series, Vol. 201, Issue 2 https://doi.org/10.1088/0067-0049/201/2/37	journal	August 2012
Measurements of 0.2–20GeV/n cosmic-ray proton and helium spectra from 1997 through 2002 with the BESS spectrometer Shikaze, Y.; Haino, S.; Abe, K. Astroparticle Physics, Vol. 28, Issue 1 https://doi.org/10.1016/j.astropartphys.2007.05.001	journal	September 2007
SUZAKU DETECTION OF SUPERHARD X-RAY EMISSION FROM THE CLASSICAL NOVA V2491 CYGNI Takei, D.; Tsujimoto, M.; Kitamoto, S. The Astrophysical Journal, Vol. 697, Issue 1 https://doi.org/10.1088/0004-637X/697/1/L54	journal	April 2009
X-ray characteristics and the spectral energy distribution of AE Aquarii Oruru, B.; Meintjes, P. J. Monthly Notices of the Royal Astronomical Society, Vol. 421, Issue 2 https://doi.org/10.1111/j.1365-2966.2012.20410.x	journal	February 2012
Properties of the Galactic population of cataclysmic variables in hard X-rays Revnivtsev, M.; Sazonov, S.; Krivonos, R. Astronomy & Astrophysics, Vol. 489, Issue 3 https://doi.org/10.1051/0004-6361:200810213	journal	September 2008
Parameterization of \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $\gamma ,\, e^{\pm }$ \end{document} , and Neutrino Spectra Produced by p‐p Interaction in Astronomical Environments Kamae, Tuneyoshi; Karlsson, Niklas; Mizuno, Tsunefumi The Astrophysical Journal, Vol. 647, Issue 1 https://doi.org/10.1086/505189	journal	August 2006
DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA Acero, F.; Ackermann, M.; Ajello, M. The Astrophysical Journal Supplement Series, Vol. 223, Issue 2 https://doi.org/10.3847/0067-0049/223/2/26	journal	April 2016
FERMI- LAT GAMMA-RAY DETECTIONS OF CLASSICAL NOVAE V1369 CENTAURI 2013 AND V5668 SAGITTARII 2015 Cheung, C. C.; Jean, P.; Shore, S. N. The Astrophysical Journal, Vol. 826, Issue 2 https://doi.org/10.3847/0004-637X/826/2/142	journal	July 2016
The Nine Lives of Cosmic Rays in Galaxies Grenier, Isabelle A.; Black, John H.; Strong, Andrew W. Annual Review of Astronomy and Astrophysics, Vol. 53, Issue 1 https://doi.org/10.1146/annurev-astro-082214-122457	journal	August 2015
Gamma-ray novae: rare or nearby? Morris, Paul J.; Cotter, Garret; Brown, Anthony M. Monthly Notices of the Royal Astronomical Society, Vol. 465, Issue 1 https://doi.org/10.1093/mnras/stw2776	journal	October 2016
Nuclear enhancement factor in calculation of Galactic diffuse gamma-rays: A new estimate with DPMJET-3 Mori, Masaki Astroparticle Physics, Vol. 31, Issue 5 https://doi.org/10.1016/j.astropartphys.2009.03.004	journal	June 2009
Cosmic-Ray Propagation and Interactions in the Galaxy Strong, Andrew W.; Moskalenko, Igor V.; Ptuskin, Vladimir S. Annual Review of Nuclear and Particle Science, Vol. 57, Issue 1 https://doi.org/10.1146/annurev.nucl.57.090506.123011	journal	November 2007
The chemical composition of Galactic ring nebulae around massive stars Esteban, C.; Mesa-Delgado, A.; Morisset, C. Monthly Notices of the Royal Astronomical Society, Vol. 460, Issue 4 https://doi.org/10.1093/mnras/stw1243	journal	May 2016
The incidence of magnetic fields in cool DZ white dwarfs Hollands, M. A.; Gänsicke, B. T.; Koester, D. Monthly Notices of the Royal Astronomical Society, Vol. 450, Issue 1 https://doi.org/10.1093/mnras/stv570	journal	April 2015
Cosmic-ray energy spectrum and composition up to the ankle: the case for a second Galactic component Thoudam, S.; Rachen, J. P.; van Vliet, A. Astronomy & Astrophysics, Vol. 595 https://doi.org/10.1051/0004-6361/201628894	journal	October 2016
Galactic cosmic ray H and He nuclei energy spectra measured by Voyagers 1 and 2 near the heliospheric termination shock in positive and negative solar magnetic polarity cycles: GALACTIC COSMIC RAY ENERGY SPECTRA Webber, W. R.; Cummings, A. C.; McDonald, F. B. Journal of Geophysical Research: Space Physics, Vol. 113, Issue A10 https://doi.org/10.1029/2008JA013395	journal	October 2008

Similar Records

Local H i emissivity measured with Fermi-LAT and implications for cosmic-ray spectra

Journal Article · Sat Jun 20 00:00:00 EDT 2015 · Astrophysical Journal · OSTI ID:1458419

Casandjian, Jean-Marc

Local H i emissivity measured with FERMI-LAT and implications for Cosmic-ray spectra

Journal Article · Sat Jun 20 00:00:00 EDT 2015 · The Astrophysical Journal (Online) · OSTI ID:1458419

Casandjian, Jean -Marc

ON THE ENERGY SPECTRA OF GeV/TeV COSMIC RAY LEPTONS

Journal Article · Wed Feb 10 00:00:00 EST 2010 · Astrophysical Journal · OSTI ID:1458419

Stawarz, Lukasz; Petrosian, Vahe

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS

Title: Evidence for GeV cosmic rays from white dwarfs in the local cosmic ray spectra and in the gamma-ray emissivity of the inner Galaxy

Citation Formats

References (79)

Similar Records

Related Subjects