Multiwavelength properties of a new Geminga-like pulsar: PSR J2021+4026

Abstract

In this paper, we report a detailed investigation of the multiwavelength properties of a newly detected gamma-ray pulsar, PSR J2021+4026, in both observational and theoretical aspects. We firstly identify an X-ray source in the XMM-Newton serendipitous source catalogue, 2XMM J202131.0+402645, located within the 95% confidence circle of PSR J2021+4026. With an archival Chandra observation, this identification provides an X-ray position with arcsecond accuracy which is helpful in facilitating further investigations. Searching for the pulsed radio emission at the position of 2XMM J202131.0+402645 with a 25-m telescope at Urumqi Astronomical Observatory resulted in null detection and places an upper-limit of 0.1~mJy for any pulsed signal at 18~cm. Together with the emission properties in X-ray and gamma-ray, the radio quietness suggests PSR J2021+4026 to be another member of Geminga-like pulsars. In the radio sky survey data, extended emission features have been identified in the gamma-ray error circle of PSR J2021+4026. We have also re-analyzed the gamma-ray data collected by FERMI's Large Area Telescope. We found that the X-ray position of 2XMM J202131.0+402645 is consistent with that of the optimal gamma-ray timing solution. We have further modeled the results in the context of outer gap model which provides us with constraints for the pulsar emission geometry such as magnetic inclination angle and the viewing angle. We have also discussed the possibility of whether PSR J2021+4026 has any physical association with the supernova remnant G78.2+2.1 (gamma-Cygni).

arXiv comment11 pages, 14 figures

References in corpus (17)

• The USNO-B Catalog
• A statistical study of 233 pulsar proper motions
• Fermi Large Area Telescope Bright Gamma-ray Source List
• The XMM-Newton Serendipitous Survey. V. The Second XMM-Newton Serendipitous Source Catalogue
• The Pulsar Kick Velocity Distribution
• Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
• Re-examining the X-Ray versus Spin-Down Luminosity Correlation of Rotation Powered Pulsars
• Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List
• X-ray emission from early-type stars in the Orion Nebula Cluster
• Pulsar Timing at Urumqi Astronomical Observatory: Observing System and Results
• The Origin and Motion of PSR J0538+2817 in S147
• A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar
• ASCA View of the Supernova Remnant Gamma Cygni (G78.2+2.1): Bremsstrahlung X-ray Spectrum from Loss-flattened Electron Distribution
• Chandra X-Ray Observatory Observations of the Globular Cluster M71
• A multi-wavelength search for a counterpart of the unidentified gamma-ray source 3EG J2020+4017 (2CG078+2)
• A search for a counterpart of the unidentified gamma-ray source 3EG J2020+4017 (2CG078+2)
• Exploring the X-ray emission properties of the supernova remnant G67.7+1.8 and its central X-ray sources

Cited by in corpus (12)

• Precise Gamma-Ray Timing and Radio Observations of 17 Fermi Gamma-Ray Pulsars
• PSR J2021+4026 in the Gamma Cygni region: the first variable gamma-ray pulsar seen by the Fermi LAT
• Discovery of TeV Gamma-ray Emission Toward Supernova Remnant SNR G78.2+2.1
• Gamma-ray spectral properties of mature pulsars: a two-layer model
• Discovery of X-ray Pulsation from the Geminga-like Pulsar PSR J2021+4026
• Mode change of a gamma-ray pulsar, PSR J2021+4026
• Detection of an X-ray Pulsation for the Gamma-ray Pulsar Centered in CTA 1
• A detailed X-ray investigation of PSR J2021+4026 and $\gamma$-Cygni supernova remnant
• Discovery of X-ray pulsations from "next Geminga" - PSR J1836+5925
• X-ray study of Variable Gamma-ray Pulsar PSR J2021+4026
• AGILE study of the gamma-ray emission from the SNR G78.2+2.1 (Gamma Cygni)
• A renewed search for radio emission from the variable $\gamma$-ray pulsar PSR J2021$+$4026