Fermi Detection of the Pulsar Wind Nebula HESS J1640-465

Abstract

We present observations of HESS J1640-465 with the Fermi-LAT. The source is detected with high confidence as an emitter of high-energy gamma-rays. The spectrum lacks any evidence for the characteristic cutoff associated with emission from pulsars, indicating that the emission arises primarily from the pulsar wind nebula. Broadband modeling implies an evolved nebula with a low magnetic field resulting in a high gamma-ray to X-ray flux ratio. The Fermi emission exceeds predictions of the broadband model, and has a steeper spectrum, possibly resulting from a distinct excess of low energy electrons similar to what is inferred for both the Vela X and Crab pulsar wind nebulae.

6 pages, 5 figures, accepted for publication in ApJ

References in corpus (17)

• Fermi Large Area Telescope First Source Catalog
• Particle acceleration in relativistic collisionless shocks: Fermi process at last?
• Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment
• Fermi-LAT Discovery of Extended Gamma-ray Emission in the Direction of Supernova Remnant W51C
• A Dynamical Model for the Evolution of a Pulsar Wind Nebula inside a Non-Radiative Supernova Remnant
• Efficient cosmic ray acceleration, hydrodynamics, and Self-consistent Thermal X-ray Emission applied to SNR RX J1713.7-3946
• Gamma ray emission from SNR RX J1713.7-3946 and the origin of galactic cosmic rays
• Fermi LAT Observations of Supernova Remnants Interacting with Molecular Clouds
• Fermi Large Area Telescope observations of the Vela-X Pulsar Wind Nebula
• The Infrared Detection of the Pulsar Wind Nebula in the Galactic Supernova Remnant 3C 58
• Probing the radio to X-ray connection of the Vela X PWN with Fermi LAT and H.E.S.S
• Multiband Emission from Pulsar Wind Nebulae: A Possible Injection Spectrum
• Fermi LAT detection of pulsed gamma-rays from the Vela-like pulsars PSR J1048-5832 and PSR J2229+6114
• XMM-Newton observations reveal the X-ray counterpart of the very-high-energy gamma-ray source HESSJ1640-465
• High Resolution X-ray Observations of the Pulsar Wind Nebula Associated with the Gamma-ray Source HESSJ1640-465
• Probing the Nature of the Vela X Cocoon
• Detection of Gamma-Ray Emission from the Vela Pulsar Wind Nebula with AGILE

Cited by in corpus (40)

• Discovery of TeV Gamma Ray Emission from Tycho's Supernova Remnant
• Pulsar Wind Nebulae as Cosmic Pevatrons: A Current Sheet's Tale
• Constraints on the Galactic Population of TEV Pulsar Wind Nebulae Using Fermi Large Area Telescope Observations
• The Dipole Magnetic Field and Spin-down Evolutions of The High Braking Index Pulsar PSR J1640-4631
• The soft gamma-ray pulsar population: an high-energy overview
• Fermi-LAT Search for Pulsar Wind Nebulae around gamma-ray Pulsars
• Fermi Large Area Telescope Observations of the Supernova Remnant G8.7-0.1
• A newly-discovered young massive star cluster at the end of the Galactic Bar
• Late-time Evolution of Composite Supernova Remnants: Deep Chandra Observations and Hydrodynamical Modeling of a Crushed Pulsar Wind Nebula in SNR G327.1-1.1
• Effects of synchrotron cooling and pair production on collisionless relativistic reconnection
• The Vela-X Pulsar Wind Nebula revisited with 4 years of Fermi-Large Area Telescope observations
• Detection of the Pulsar Wind Nebula HESS J1825-137 with the Fermi Large Area Telescope
• NuSTAR Discovery of a Young, Energetic Pulsar Associated with the Luminous Gamma-ray Source HESS J1640-465
• Multi-Zone Modeling of The Pulsar Wind Nebula HESS J1825-137
• Discovery of the hard spectrum VHE gamma-ray source HESS J1641-463
• A Broadband Study of the Emission from the Composite Supernova Remnant MSH 11-62
• Discovery of the source HESS J1356-645 associated with the young and energetic PSR J1357-6429
• HESS J1640-465 - an exceptionally luminous TeV gamma-ray supernova remnant
• Probing the gamma-ray emission from HESS J1834-087 using H.E.S.S. and Fermi LAT observations
• Fermi-LAT constraints on the Pulsar Wind Nebula nature of HESS J1857+026
• Interstellar gas towards the TeV gamma-ray sources HESS J1640-465 and HESS J1641-463
• First high-resolution radio study of the Supernova Remnant G338.3-0.0 associated with the gamma-ray source HESS J1640-465
• HESS J1640-465 -- a Gamma-ray emitting pulsar wind nebula ?
• Neutrino signal from extended Galactic sources in IceCube
• Chasing the Identification of ASCA Galactic Objects (ChIcAGO) - An X-ray Survey of Unidentified Sources in the Galactic Plane I: Source Sample and Initial Results
• HESS J1640-465 and HESS J1641-463: two intriguing TeV sources in the light of new Fermi LAT observations
• A Tale of Two Current Sheets
• LMC N132D: A mature supernova remnant with a power-law gamma-ray spectrum extending beyond 8 TeV
• High energy gamma-ray emission from compact galactic sources in the context of observations with the next generation Cherenkov Telescope Arrays
• Constraining the origin of the puzzling source HESS J1640-465 and the PeVatron candidate HESS J1641-463 using Fermi-LAT observations
• The environment of the gamma-ray emitting SNR G338.3-0.0: a hadronic interpretation for HESS J1640-465
• Non-thermal emission from Pulsar-Wind Nebulae in Starburst Galaxies
• A Self-Consistent Explanation of TeV Emissions from HESS J1640-465 and HESS J1641-463
• Study of maximum electron energy of sub-PeV pulsar wind nebulae by multiwavelength modelling
• Broadband X-ray Spectroscopy of the Pulsar Wind Nebula in HESS J1640-465
• Suzaku Analysis of the Supernova Remnant G306.3-0.9 and the Gamma-ray View of Its Neighborhood
• Implications of the pulsar wind nebula scenario for a TeV gamma-ray source VER J2016+371
• Cosmic Ray e^+/(e^- + e^+) and pbar/p Ratios Explained by an Injection Model Based on Gamma-ray Observations
• CANGAROO-III observation of TeV gamma rays from the unidentified gamma-ray source HESS J1614-518
• Analysis of the possible detection of the pulsar wind nebulae of PSR J1208-6238, J1341-6220, J1838-0537 and J1844-0346