Galactic Binaries Can Explain the Fermi Galactic Center Excess and 511 keV Emission

Abstract

The Fermi-LAT Galactic Center excess and the 511 keV positron-annihilation signal from the inner Galaxy bare a striking morphological similarity. We propose that both can be explained through a scenario in which millisecond pulsars produce the Galactic Center excess and their progenitors, low-mass X-ray binaries, the 511 keV signal. As a proof-of-principle we study a specific population synthesis scenario from the literature involving so-called ultracompact X-ray binaries. Moreover, for the first time, we quantitatively show that neutron star, rather than black hole, low-mass X-ray binaries can be responsible for the majority of the positrons. In this particular scenario binary millisecond pulsars can be both the source of the Fermi-LAT $\gamma$-ray excess and the bulge positrons. Future avenues to test this scenario are discussed.

arXiv comment11 pages, 5 figures, appendix, comments welcome

References in corpus (134)

• A Universal Density Profile from Hierarchical Clustering
• X-ray Properties of Black-Hole Binaries
• Advection-Dominated Accretion: A Self-Similar Solution
• Towards a unified model for black hole X-ray binary jets
• Fermi Large Area Telescope Second Source Catalog
• Modelling the behaviour of accretion flows in X-ray binaries
• A fundamental plane of black hole activity
• Sources of Relativistic Jets in the Galaxy
• Dark Matter Annihilation in The Galactic Center As Seen by the Fermi Gamma Ray Space Telescope
• ISGRI: the INTEGRAL Soft Gamma-Ray Imager
• A Scheme to Unify Low-Power Accreting Black Holes - Jet-Dominated Accretion Flows and the Radio/X-Ray Correlation
• Compact Object Modeling with the StarTrack Population Synthesis Code
• A universal radio/X-ray correlation in low/hard state black hole binaries
• Going with the flow: can the base of jets subsume the role of compact accretion disk coronae?
• A Radio Pulsar/X-ray Binary Link
• Correlated X-ray Spectral and Timing Behavior of the Black Hole Candidate XTE J1550-564: A New Interpretation of Black Hole States
• A jet model for the broadband spectrum of XTE J1118+480: Synchrotron emission from radio to X-rays in the Low/Hard spectral state
• On The Origin Of The Gamma Rays From The Galactic Center
• The Characterization of the Gamma-Ray Signal from the Central Milky Way: A Compelling Case for Annihilating Dark Matter
• Improved Estimates of the Milky Way's Stellar Mass and Star Formation Rate from Hierarchical Bayesian Meta-Analysis
• Detection of a Gamma-Ray Source in the Galactic Center Consistent with Extended Emission from Dark Matter Annihilation and Concentrated Astrophysical Emission
• The Nuclear Bulge of the Galaxy. III. Large-Scale Physical Characteristics of Stars and Interstellar Matter
• Powerful jets from black hole X-ray binaries in Low/Hard X-ray states
• Background model systematics for the Fermi GeV excess
• Swings between rotation and accretion power in a millisecond binary pulsar
• MeV Dark Matter: Has It Been Detected?
• Radio / X-ray correlation in the low/hard state of GX 339--4
• The Non-Linear Dependence of Flux on Black Hole Mass and Accretion Rate in Core Dominated Jets
• Fermi-LAT Observations of High-Energy Gamma-Ray Emission Toward the Galactic Center
• Astrophysical and Dark Matter Interpretations of Extended Gamma-Ray Emission from the Galactic Center
• Low mass X-ray binaries as a stellar mass indicator for the host galaxy
• A catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth edition)
• WATCHDOG: A Comprehensive All-Sky Database of Galactic Black Hole X-ray Binaries
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Jets in neutron star X-ray binaries: a comparison with black holes
• The all-sky distribution of 511 keV electron-positron annihilation emission
• Strong support for the millisecond pulsar origin of the Galactic center GeV excess
• States and transitions in black-hole binaries
• A dark jet dominates the power output of the stellar black hole Cygnus X-1
• A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
• The 511 keV emission from positron annihilation in the Galaxy
• Formation and evolution of compact binaries in globular clusters: II. Binaries with neutron stars
• Evidence for Unresolved Gamma-Ray Point Sources in the Inner Galaxy
• Jet-dominated states: an alternative to advection across black hole event horizons in `quiescent' X-ray binaries
• A state change in the low-mass X-ray binary XSS J12270-4859
• The INTEGRAL/IBIS Scientific Data Analysis
• Two stellar-mass black holes in the globular cluster M22
• A black hole in a globular cluster
• Exploring the Role of Jets in the Radio/X-ray Correlations of GX339-4
• The e-ASTROGAM mission (exploring the extreme Universe with gamma rays in the MeV-GeV range)
• Stringent Constraint on Galactic Positron Production
• A radio-emitting outflow in the quiescent state of A0620-00: implications for modelling low-luminosity black hole binaries
• The Consistency of Fermi-LAT Observations of the Galactic Center with a Millisecond Pulsar Population in the Central Stellar Cluster
• Hysteresis in the Light Curves of Soft X-ray Transients
• Spectral analysis of the Galactic e+e- annihilation emission
• A Chandra/HETGS Census of X-ray Variability From Sgr A* During 2012
• Positron annihilation spectrum from the Galactic Center region observed by SPI/INTEGRAL
• GeV excess in the Milky Way: The Role of Diffuse Galactic gamma ray Emission template
• The Propeller Regime of Disk Accretion to a Rapidly Rotating Magnetized Star
• Pulsars Cannot Account for the Inner Galaxy's GeV Excess
• Discovery of PSR J1227-4853: A transition from a low-mass X-ray binary to a redback millisecond pulsar
• Jet-dominated advective systems: radio and X-ray luminosity dependence on the accretion rate
• Gamma-ray spectroscopy of Positron Annihilation in the Milky Way
• The radio/X-ray domain of black hole X-ray binaries at the lowest radio luminosities
• Galactic Bulge Preferred Over Dark Matter for the Galactic Center Gamma-Ray Excess
• A broadband leptonic model for gamma-ray emitting microquasars
• X-ray emission from black-hole binaries
• Cosmic Rays from Microquasars: a Narrow Component to the CR Spectrum?
• Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess
• A Radio-Selected Black Hole X-ray Binary Candidate in the Milky Way Globular Cluster M62
• Long Term Variability of Cygnus X-1. IV. Spectral Evolution 1999-2004
• Millisecond pulsars and the Galactic Center gamma-ray excess: the importance of luminosity function and secondary emission
• Iron Emission Lines from Extended X-ray Jets in SS 433: Reheating of Atomic Nuclei
• Deep radio imaging of 47 Tuc identifies the peculiar X-ray source X9 as a new black hole candidate
• Gamma-ray continuum emission from the inner Galactic region as observed with INTEGRAL/SPI
• A New Photometric Model of the Galactic Bar using Red Clump Giants
• The Contribution of Cosmic Rays Interacting With Molecular Clouds to the Galactic Center Gamma-Ray Excess
• X-ray coherent pulsations during a sub-luminous accretion disk state of the transitional millisecond pulsar XSS J12270-4859
• Positron annihilation signatures associated with the outburst of the microquasar V404 Cygni
• The Mexican Hat Wavelet Family. Application to point source detection in CMB maps
• Challenges in Explaining the Galactic Center Gamma-Ray Excess with Millisecond Pulsars
• Radio imaging observations of PSR J1023+0038 in an LMXB state
• The neutron star transient and millisecond pulsar in M28: from sub-luminous accretion to rotation-powered quiescence
• The ultracompact nature of the black hole candidate X-ray binary 47 Tuc X9
• A RIAF Interpretation for the Past Higher Activity of the Galactic Center Black Hole and the 511 keV Annihilation Emission
• Continuum gamma-ray emission from light dark matter positrons and electrons
• Hadronic high-energy gamma-ray emission from the microquasar LS I $+61303$
• The evolution of ultracompact X-ray binaries
• Correlated optical, X-ray, and gamma-ray flaring activity seen with INTEGRAL during the 2015 outburst of V404 Cygni
• Identification of the High-Energy Gamma-Ray Source 3FGL J1544.6-1125 as a Transitional Millisecond Pulsar Binary in an Accreting State
• On the morphology of the electron-positron annihilation emission as seen by SPI/INTEGRAL
• The Galactic Bulge Survey: outline and X-ray observations
• Timing Observations of PSR J1023+0038 During a Low-Mass X-ray Binary State
• Radio detection prospects for a bulge population of millisecond pulsars as suggested by Fermi LAT observations of the inner Galaxy
• NuSTAR Observations of the State Transition of Millisecond Pulsar Binary PSR J1023+0038
• Energisation of interstellar media and cosmic ray production by jets from X-ray binaries
• Simultaneous Chandra and VLA Observations of the Transitional Millisecond Pulsar PSR J1023+0038: Anti-correlated X-ray and Radio Variability
• Formation of Ultracompact X-ray Binaries in Dense Star Clusters
• Composition, collimation, contamination: the jet of Cygnus X-1
• NuSTAR Hard X-ray Survey of the Galactic Center Region II: X-ray Point Sources
• Spitzer Reveals Infrared Optically-Thin Synchrotron Emission from the Compact Jet of the Neutron Star X-Ray Binary 4U 0614+091
• Galactic Populations of Ultracompact Binaries
• Microquasars as sources of positron annihilation radiation
• Population synthesis of ultracompact X-ray binaries in the Galactic Bulge
• An Ultra-deep Chandra Catalog of X-ray Point Sources in the Galactic Center Star Cluster
• Interacting dark matter contribution to the Galactic 511 keV gamma ray emission: constraining the morphology with INTEGRAL/SPI observations
• The first low-mass black hole X-ray binary identified in quiescence outside of a globular cluster
• Low Mass X-Ray Binaries in the Inner Galaxy: Implications for Millisecond Pulsars and the GeV Excess
• Search for 511 keV Emission in Satellite Galaxies of the Milky Way with INTEGRAL/SPI
• Diffuse Galactic antimatter from faint thermonuclear supernovae in old stellar populations
• The emission of Cygnus X-1: observations with INTEGRAL SPI from 20 keV to 2 MeV
• Could electron-positron annihilation lines in the Galactic center result from pulsar winds?
• Estimating the kinetic luminosity function of jets from Galactic X-ray binaries
• SkyFACT: High-dimensional modeling of gamma-ray emission with adaptive templates and penalized likelihoods
• Consistency Between the Luminosity Function of Resolved Millisecond Pulsars and the Galactic Center Excess
• Monte Carlo modelling of the propagation and annihilation of nucleosynthesis positrons in the Galaxy
• Lepto-hadronic model for the broadband emission of Cygnus X-1
• Gamma-ray and X-ray emission from the Galactic Centre: hints on the nuclear star cluster formation history
• Disrupted Globular Clusters and the Gamma-Ray Excess in the Galactic Centre
• Formation of the planet around the millisecond pulsar J1719-1438
• Analyzing γ-rays of the Galactic Center with Deep Learning
• First INTEGRAL observations of V404 Cygni during the 2015 outburst : spectral behavior in the 20 - 650 keV energy range
• Long-term luminosity behavior of 14 ultracompact X-ray binaries
• Mass-scaling as a method to constrain outflows and particle acceleration from low-luminosity accreting black holes
• Sagittarius A* High Energy X-ray Flare Properties During NuSTAR Monitoring of the Galactic Center from 2012 to 2015
• Radiatively driven rotating pair-plasma jets from two component accretion flows
• On the Origin of the 511 keV Emission in the Galactic Centre
• Population synthesis of classical low-mass X-ray binaries in the Galactic Bulge
• Detection of gamma-ray emission from globular clusters M 15, NGC 6397, NGC 5904, NGC 6218 and NGC 6139 with Fermi-LAT
• Cosmic Microwave Background Constraints on Dark Matter Models of the Galactic Center 511 keV Signal
• Searching for the 511 keV annihilation line from galactic compact objects with the IBIS gamma ray telescope
• On the reliability of proxies for globular cluster collision rates
• Fermi Gamma-ray Space Telescope
• The IBIS view of the galactic centre: INTEGRAL's imager observations simulations

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• Primordial black holes as a dark matter candidate are severely constrained by the Galactic Center 511 keV gamma-ray line
• Dark Matter Strikes Back at the Galactic Center
• Constraints on a mixed model of dark matter particles and primordial black holes from the Galactic 511 keV line
• Quiescent and active galactic nuclei as factories of merging compact objects in the era of gravitational-wave astronomy
• The Positron Puzzle
• The 511 keV Excess and Primordial Black Holes
• Detection of the 511 keV Galactic positron annihilation line with COSI
• Gamma-Ray Emission from Molecular Clouds Generated by Penetrating Cosmic Rays
• The Sensitivity of Future Gamma-Ray Telescopes to Primordial Black Holes
• Probing the Fermi-LAT GeV excess with gravitational waves
• Extinct radio pulsars as a source of subrelativistic positrons
• Multi-Component Imaging of the Fermi Gamma-ray Sky in the Spatio-spectral Domain
• Solution of the dark matter riddle within standard model physics: From black holes, galaxies and clusters to cosmology
• Molecular ionization rates and ultracompact dark matter minihalos
• Positron Annihilation in the Galaxy
• Primordial black holes in Randall-Sundrum: Cosmological signatures
• Characterizing the Expected Behavior of Non-Poissonian Template Fitting
• Galactic Electron-Positron Annihilation Emission from X-Ray Binaries with Transient and Persistent Jets
• Measuring the smearing of the Galactic 511 keV signal: positron propagation or supernova kicks?
• Extragalactic Searches for Dark Matter Annihilation