Possible counterpart signal of the Fermi bubbles at the cosmic-ray positrons

Abstract

The inner galaxy has hosted cosmic-ray burst events including those responsible for the gamma-ray Fermi bubbles and the eROSITA bubbles in X-rays. In this work, we study the AMS-02 positron fraction and find three features around 12, 21 and 48 GeV of which the lowest energy has a 1.4 to 4.9-$\sigma$ significance, depending on astrophysical background assumptions. Using background simulations that explain the cosmic-ray positron fraction, positron flux and electron plus positron flux, by primary, secondary cosmic rays and cosmic rays from local pulsars, we test these spectral features as originating from electron/positron burst events from the inner galaxy. We find the 12 GeV feature, to be explained by an event of age $\tau \simeq 3-10$ Myr; in agreement with the proposed age of the Fermi bubbles. Furthermore, the energy in cosmic-ray electrons and positrons propagating along the galactic disk and not within the Fermi bubbles volume, is estimated to be $10^{51.5}-10^{57.5}$ ergs, or $O(10^{-4})-O(1)$ the cosmic-ray energy causing the Fermi bubbles. We advocate that these positron fraction features, are the counterpart signals of the Fermi bubbles, or of substructures in them, or of the eROSITA bubbles.

arXiv comment10 pages, 3 figures and 1 table, Zenodo link: https://zenodo.org/record/6995268#.YvsoJS ZNp8

References in corpus (134)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• The ATNF Pulsar Catalogue
• A Theory of Dark Matter
• Fermi Large Area Telescope Fourth Source Catalog
• Propagation of cosmic-ray nucleons in the Galaxy
• Giant Gamma-ray Bubbles from Fermi-LAT: AGN Activity or Bipolar Galactic Wind?
• The Second Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
• Dark Matter Annihilation in The Galactic Center As Seen by the Fermi Gamma Ray Space Telescope
• Birth and Evolution of Isolated Radio Pulsars
• The Parkes Multibeam Pulsar Survey: I. Observing and Data Analysis Systems, Discovery and Timing of 100 Pulsars
• The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis
• Astrophysical Signatures of Secluded Dark Matter
• Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons
• Model-independent implications of the e+, e-, anti-proton cosmic ray spectra on properties of Dark Matter
• Pulsars as the Sources of High Energy Cosmic Ray Positrons
• 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
• Solar Modulation of Cosmic Rays
• Background model systematics for the Fermi GeV excess
• The First Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
• Secondary antiprotons and propagation of cosmic rays in the Galaxy and heliosphere
• Dark Matter and Pulsar Model Constraints from Galactic Center Fermi-LAT Gamma Ray Observations
• Fermi-LAT Observations of High-Energy Gamma-Ray Emission Toward the Galactic Center
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• TeV Gamma Rays from Geminga and the Origin of the GeV Positron Excess
• Constraints on cosmic-ray propagation models from a global Bayesian analysis
• The Spectrum and Morphology of the Fermi Bubbles
• Microwave ISM Emission Observed by WMAP
• The 2HWC HAWC Observatory Gamma Ray Catalog
• Cosmic-Ray Nuclei, Antiprotons and Gamma-rays in the Galaxy: a New Diffusion Model
• The origin of the positron excess in cosmic rays
• The cosmic-ray positron energy spectrum measured by PAMELA
• The Large-scale Bipolar Wind in the Galactic Center
• The Fermi Haze: A Gamma-Ray Counterpart to the Microwave Haze
• New Positron Spectral Features from Supersymmetric Dark Matter - a Way to Explain the PAMELA Data?
• Leptophilic Dark Matter
• Emission Beam Geometry of Selected Pulsars Derived from Average Pulse Polarization Data
• On possible interpretations of the high energy electron-positron spectrum measured by the Fermi Large Area Telescope
• The Fermi Bubbles: Giant, Multi-Billion-Year-Old Reservoirs of Galactic Center Cosmic Rays
• The surprising Crab pulsar and its nebula: A review
• Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List
• Multiple Galactic Sources with Emission Above 56 TeV Detected by HAWC
• Detection of large-scale X-ray bubbles in the Milky Way halo
• Extended Anomalous Foreground Emission in the WMAP 3-Year Data
• Giant Magnetized Outflows from the Centre of the Milky Way
• The Consistency of Fermi-LAT Observations of the Galactic Center with a Millisecond Pulsar Population in the Central Stellar Cluster
• WIMPonium and Boost Factors for Indirect Dark Matter Detection
• The Fermi Bubbles. I. Possible Evidence for Recent AGN Jet Activity in the Galaxy
• On the birthrates of Galactic neutron stars
• Pulsars versus Dark Matter Interpretation of ATIC/PAMELA
• Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station
• Probing the Pulsar Origin of the Anomalous Positron Fraction with AMS-02 and Atmospheric Cherenkov Telescopes
• GeV excess in the Milky Way: The Role of Diffuse Galactic gamma ray Emission template
• Dark Matter and Pulsar Origins of the Rising Cosmic Ray Positron Fraction in Light of New Data From AMS
• High-energy antiprotons from old supernova remnants
• Cosmic Ray Protons in the Inner Galaxy and the Galactic Center Gamma-Ray Excess
• The population of TeV pulsar wind nebulae in the H.E.S.S. Galactic Plane Survey
• Interpretation of AMS-02 electrons and positrons data
• The Case for a 700+ GeV WIMP: Cosmic Ray Spectra from PAMELA, Fermi and ATIC
• The Fermi Bubbles: Supersonic AGN Jets with Anisotropic Cosmic Ray Diffusion
• On cosmic ray acceleration in supernova remnants and the FERMI/PAMELA data
• Indirect and direct search for dark matter
• Teraelectronvolt pulsed emission from the Crab pulsar detected by MAGIC
• Galactic Center gamma-ray "excess" from an active past of the Galactic Centre?
• High Energy Positrons From Annihilating Dark Matter
• Wild at Heart:-The Particle Astrophysics of the Galactic Centre
• Dissecting cosmic-ray electron-positron data with Occam's Razor: the role of known Pulsars
• Testing astrophysical models for the PAMELA positron excess with cosmic ray nuclei
• Fermi gamma-ray `bubbles' from stochastic acceleration of electrons
• Origin of the Fermi Bubble
• A Unified Model of the Fermi Bubbles, Microwave Haze, and Polarized Radio Lobes: Reverse Shocks in the Galactic Center's Giant Outflows
• High-Energy Gamma Rays from the Milky Way: Three-Dimensional Spatial Models for the Cosmic-Ray and Radiation Field Densities in the Interstellar Medium
• The Galactic Center GeV Excess from a Series of Leptonic Cosmic-Ray Outbursts
• The characteristics of the Galactic center excess measured with 11 years of Fermi-LAT data
• Suzaku observations of the diffuse x-ray emission across the fermi bubbles' edges
• An Effective Theory of Dirac Dark Matter
• Antiprotons from dark matter annihilation in the Galaxy: astrophysical uncertainties
• Coherently Dedispersed Polarimetry of Millisecond Pulsars
• AMS-02 data confronts acceleration of cosmic ray secondaries in nearby sources
• Is the PAMELA anomaly caused by the supernova explosions near the Earth?
• A Predictive Analytic Model for the Solar Modulation of Cosmic Rays
• The PAMELA Positron Excess from Annihilations into a Light Boson
• Constraints on dark matter annihilation from AMS-02 results
• X-Ray Observations of Black Widow Pulsars
• Arecibo 430 MHz Pulsar Polarimetry: Faraday Rotation Measures and Morphological Classifications
• Pulsar Birthrate from Parkes Multi-beam Survey
• Pulsar interpretation for the AMS-02 result
• AMS-100: The Next Generation Magnetic Spectrometer in Space -- An International Science Platform for Physics and Astrophysics at Lagrange Point 2
• The Fermi Bubbles. II. The Potential Roles of Viscosity and Cosmic Ray Diffusion in Jet Models
• New calculation of antiproton production by cosmic ray protons and nuclei
• The Fermi Bubbles as Starburst Wind Termination Shocks
• Galactic factories of cosmic-ray electrons and positrons
• The Return of the Templates: Revisiting the Galactic Center Excess with Multi-Messenger Observations
• Implications of the AMS-02 positron fraction in cosmic rays
• The Fermi Bubbles: Gamma-ray, Microwave, and Polarization Signatures of Leptonic AGN Jets
• The High-Energy Tail of the Galactic Center Gamma-Ray Excess
• NICER X-ray Observations of Seven Nearby Rotation-Powered Millisecond Pulsars
• Cosmic-Ray Electron Excess from Pulsars is Spiky or Smooth?: Continuous and Multiple Electron/Positron injections
• Can we explain AMS-02 antiproton and positron excesses simultaneously by nearby supernovae without pulsars nor dark matter?
• Constraining the origin of the rising cosmic ray positron fraction with the boron-to-carbon ratio
• Neutrino Mass and Dark Matter in light of recent AMS-02 results
• Dynamical Dark Matter and the Positron Excess in Light of AMS
• The Spatially Uniform Spectrum of the Fermi Bubbles: the Leptonic AGN Jet Scenario
• Optical and infrared observations of the Crab Pulsar and its nearby knot
• Characterization of the optical and X-ray properties of the northwestern wisps in the Crab Nebula
• Galactic dark matter search via phenomenological astrophysics modeling
• Possible Evidence for the Stochastic Acceleration of Secondary Antiprotons by Supernova Remnants
• Stochastic cosmic ray sources and the TeV break in the all-electron spectrum
• Dark Matter Particle Explorer observations of high-energy cosmic ray electrons plus positrons and their physical implications
• Pinpointing Cosmic Ray Propagation With The AMS-02 Experiment
• Studying the Milky Way Pulsar Population with Cosmic-Ray Leptons
• Constraining positron emission from pulsar populations with AMS-02 data
• The near-infrared detection of PSR B0540-69 and its nebula
• Charge Asymmetric Cosmic Ray Signals From Dark Matter Decay
• 'Notches' in the Profiles of Bright Pulsars
• Slightly Non-Minimal Dark Matter in PAMELA and ATIC
• TeV Electron Spectrum for Probing Cosmic-Ray Escape from a Supernova Remnant
• Suzaku X-ray Observations of the Fermi Bubbles: Northernmost Cap and Southeast Claw Discovered with MAXI-SSC
• Identifying the Radio Bubble Nature of the Microwave Haze
• Features in the Spectrum of Cosmic-Ray Positrons from Pulsars
• Optical and ultraviolet pulsed emission from an accreting millisecond pulsar
• Analyzing the Gamma-ray Sky with Wavelets
• Utilizing cosmic-ray positron and electron observations to probe the averaged properties of Milky Way pulsars
• Possible optical counterpart of PSR J1357-6429
• Pulsars Do Not Produce Sharp Features in the Cosmic-Ray Electron and Positron Spectra
• Production and acceleration of antinuclei in supernova shockwaves
• The first ultraviolet detection of the Large Magellanic Cloud pulsar PSR B0540-69 and its multi-wavelength properties
• Cosmic Rays from Pulsars and Magnetars
• The optical and near-infrared spectrum of the Crab pulsar with X-shooter
• Chandra and HST Studies of Six Millisecond Pulsars in the Globular Cluster M13
• Revisiting GeV-scale annihilating dark matter with the AMS-02 positron fraction
• Constraining the Charge-, Time- and Rigidity-Dependence of Cosmic-Ray Solar Modulation with AMS-02 Observations during Solar Cycle 24
• Dark matter annihilation into leptons through gravity portals

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