Multiwavelength Investigation of $\gamma$-ray Source MGRO J1908+06 Emission Using Fermi-LAT, VERITAS, and HAWC

Abstract

This paper investigates the origin of the $\gamma$-ray emission from MGRO J1908+06 in the GeV-TeV energy band. By analyzing the data collected by {\it Fermi}-LAT, VERITAS, and HAWC, with the addition of spectral data previously reported by LHAASO, a multiwavelength (MW) study of the morphological and spectral features of MGRO J1908+06 provides insight into the origin of the $\gamma$-ray emission. The mechanism behind the bright TeV emission is studied by constraining the magnetic field strength, the source age and the distance through detailed broadband modeling. Both spectral shape and energy-dependent morphology support the scenario that inverse-Compton (IC) emission of an evolved pulsar wind nebula (PWN) associated with PSR J1907+0602 is responsible for the MGRO J1908+06 $\gamma$-ray emission with a best-fit true age of $T=22\pm 9$ kyr and a magnetic field of $B=5.4\pm 0.8\mu \mathrm{G}$, assuming the distance to the pulsar $d_{\mathrm{PSR}}=3.2$ kpc.

arXiv comment21 pages, 11 figures, submitted to The Astrophysical Journal

References in corpus (40)

• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• The CO-to-H2 Conversion Factor
• The Milky Way in Molecular Clouds: A New Complete CO Survey
• A statistical study of 233 pulsar proper motions
• Fermi Large Area Telescope Fourth Source Catalog
• Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
• The Second Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
• Incremental Fermi Large Area Telescope Fourth Source Catalog
• Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth
• VERITAS: the Very Energetic Radiation Imaging Telescope Array System
• Observation of the Crab Nebula with the HAWC Gamma-Ray Observatory
• Pulsar Wind Nebulae in Evolved Supernova Remnants
• TeV Gamma-Ray Sources from a Survey of the Galactic Plane with Milagro
• The 1st Fermi Lat Supernova Remnant Catalog
• The First LHAASO Catalog of Gamma-Ray Sources
• Multiple Galactic Sources with Emission Above 56 TeV Detected by HAWC
• A Dynamical Model for the Evolution of a Pulsar Wind Nebula inside a Non-Radiative Supernova Remnant
• A Measurement of the Spatial Distribution of Diffuse TeV Gamma Ray Emission from the Galactic Plane with Milagro
• Observation of Extended VHE Emission from the Supernova Remnant IC 443 with VERITAS
• Very high energy particle acceleration powered by the jets of the microquasar SS 433
• Rotation Curve of the Milky Way out to $\sim$ 200 kpc
• Measurement of the Crab Nebula Spectrum Past 100 TeV with HAWC
• High-Energy Gamma Rays from the Milky Way: Three-Dimensional Spatial Models for the Cosmic-Ray and Radiation Field Densities in the Interstellar Medium
• On the TeV Halo Fraction in gamma-ray bright Pulsar Wind Nebulae
• Search for extended sources in the Galactic Plane using 6 years of Fermi-Large Area Telescope Pass 8 data above 10 GeV
• TeV Halos are Everywhere: Prospects for New Discoveries
• A Cosmic Ray Positron Anisotropy due to Two Middle-Aged, Nearby Pulsars?
• PSR J1907+0602: A Radio-Faint Gamma-Ray Pulsar Powering a Bright TeV Pulsar Wind Nebula
• Detection of Very High Energy radiation from HESS J1908+063 confirms the Milagro unidentified source MGRO J1908+06
• Pulsar magnetic alignment and the pulsewidth-age relation
• Observation of the TeV gamma-ray source MGRO J1908+06 with ARGO-YBJ
• Cosmic-ray acceleration and escape from post-adiabatic Supernova remnants
• Investigating the TeV Morphology of MGRO J1908+06 with VERITAS
• The effects of spin-down on the structure and evolution of pulsar wind nebulae
• Ultra-high energy Inverse Compton emission from Galactic electron accelerators
• Investigating the nature of MGRO J1908+06 with multiwavelength observations
• Timing of 29 Pulsars Discovered in the PALFA Survey
• Radio study of the extended TeV source VER J1907+062
• Multiwavelength investigation of the candidate Galactic PeVatron MGRO J1908+06
• Revisiting the PeVatron candidate MGRO J1908+06 with an updated H.E.S.S. analysis

Cited by in corpus (1)

• Investigation of the Microquasar SS 433 with VERITAS