Chandra X-ray Observations of PSR J1849-0001, its Pulsar Wind Nebula, and the TeV Source HESS J1849-000
arXiv:2311.13677 · doi:10.3847/1538-4357/ad3e6d
Abstract
We obtained a 108 ks Chandra X-ray Observatory (CXO) observation of PSR J1849-0001 and its pulsar wind nebula (PWN), coincident with the TeV source HESS J1849-000. By analyzing the new and archival CXO data, we resolved the pulsar from the PWN, explored the PWN morphology on arcsecond and arcminute scales, and measured the spectra of different regions of the PWN. Both the pulsar and the compact inner PWN spectra are hard with power-law photon indices of and , respectively. The jet-dominiated PWN has a relatively low luminosity, lack of gamma-ray pulsations, relatively hard and nonthermal spectrum of the pulsar, and sine-like pulse profile, which indicates a relatively small angle between the pulsar's spin and magnetic dipole axis. In this respect, it shares similar properties with a few other so-called MeV pulsars. Although the joint X-ray and TeV spectral energy distribution can be roughly described by a single-zone model, the obtained magnetic field value is unrealistically low. A more realistic scenario is the presence of a relic PWN, no longer emitting synchrotron X-rays but still radiating in TeV via inverse-Compton upscattering. We calso serendipitously detected surprisingly bright X-ray emission from a very wide binary whose components should not be interacting.
13 pages, 9 figures, Accepted by ApJ
References in corpus (20)
- Gaia Data Release 3: Summary of the content and survey properties
- The VLA Galactic Plane Survey
- The Rapid ASKAP Continuum Survey I: Design and First Results
- 3HWC: The Third HAWC Catalog of Very-High-Energy Gamma-ray Sources
- A radiation transfer model for the Milky-Way: I. Radiation fields and application to High Energy Astrophysics
- Fitting Pulsar Wind Tori. II. Error Analysis and Applications
- Galactic Supernova Remnant Candidates Discovered by THOR
- The soft gamma-ray pulsar population: an high-energy overview
- Pulsar-wind nebulae and magnetar outflows: observations at radio, X-ray, and gamma-ray wavelengths
- A global view on star formation: The GLOSTAR Galactic Plane Survey. I. Overview and first results for the Galactic longitude range 28° < l < 36°
- Light-curve modelling constraints on the obliquities and aspect angles of the young Fermi pulsars
- Rings and Jets around PSR J2021+3651: the `Dragonfly Nebula'
- The imprint of pulsar parameters on the morphology of Pulsar Wind Nebulae
- UV emission from young and middle-aged pulsars: Connecting X-rays with the optical
- Quantitative Age Estimation of Supernova Remnants and Associated Pulsars
- Toward understanding the physical underpinnings of spatial and spectral morphologies of pulsar wind nebulae
- Neutron Star Interior Composition Explorer X-ray Timing of the Radio and Gamma-ray Quiet Pulsars PSR J1412+7922 AND PSR J1849-0001
- Observation of gamma rays up to 320 TeV from the middle-aged TeV pulsar wind nebula HESS J1849000
- Revisiting the Chandra Observation on the Region of PSR J1809-1917: Indication of an X-ray Halo and Implication for the Origin of HESS J1809-193
- NuSTAR observations of G11.2-0.3