The Slow X-Ray Expansion of the Northwestern Rim of the Supernova Remnant RX J0852.0-4622

Abstract

The detection of radioactive decay line of 44Ti provides a unique evidence that the gamma-ray source is a young (< 1,000 yr) supernova remnant because of its short lifetime of about 90 yr. Only two Galactic remnants, Cassiopeia A and RX J0852.0-4622, are hitherto reported to be the 44Ti line emitter, although the detection from the latter has been debated. Here we report on an expansion measurement of the northwestern rim of RX J0852.0-4622 obtained with X-ray observations separated by 6.5 yr. The expansion rate is derived to be 0.023+/-0.006% that is about five times lower than those of young historical remnants. Such a slow expansion suggests that RX J0852.0-4622 is not a young remnant as has been expected. We estimate the age of 1,700-4,300 yr of this remnant depending on its evolutionary stage. Assuming a high shock speed of about 3000 km/sec, which is suggested by the detection of non-thermal X-ray radiation, the distance of about 750 pc to this remnant is also derived.

arXiv comment12 pages, 3 figures, Accepted for publication in the Astrophysical Journal Letters

References in corpus (18)

• Nucleosynthesis in Massive Stars With Improved Nuclear and Stellar Physics
• Analytical solutions for energy spectra of electrons accelerated by nonrelativistic shock-waves in shell type supernova remnants
• The XMM-Newton EPIC Background: Production of Background Maps and Event Files
• RXJ 0852.0-0462: Another Nonthermal Shell-Type SNR (G266.2-1.2)
• H.E.S.S. observations of the supernova remnant RX J0852.0-4622: shell-type morphology and spectrum of a widely extended VHE gamma-ray source
• HESS Observations and VLT Spectroscopy of PG 1553+113
• The SN 1006 Remnant: Optical Proper Motions, Deep Imaging, Distance, and Brightness at Maximum
• Measuring Cluster Temperature Profiles with XMM/EPIC
• The first COMPTEL Source Catalogue
• Chandra Observations of A Galactic Supernova Remnant Vela Jr.: A New Sample of Thin Filaments Emitting Synchrotron X-Rays
• Fine-structure in the nonthermal X-ray emission of SNR RX J1713.7-3946 revealed by Chandra
• The Expansion of the X-ray Remnant of Tycho's Supernova (SN1572)
• Detection of Gamma-rays around 1TeV from RX J0852.0-4622 by CANGAROO-II
• Overabundance of Calcium in the young SNR RX J0852$-$4622: evidence of over-production of ${}^{44}$Ti
• The Compact Central Object in the Supernova Remnant G266.2-1.2
• The X-ray Expansion of the Supernova Remnant Cassiopeia A
• XMM-Newton observations of the supernova remnant RX J0852.0-4622/GRO J0852-4642
• The Extraordinarily Rapid Expansion of the X-ray Remnant of Kepler's Supernova (SN1604)

Cited by in corpus (56)

• The 1st Fermi Lat Supernova Remnant Catalog
• Observational signatures of particle acceleration in supernova remnants
• Galactic electrons and positrons at the Earth:new estimate of the primary and secondary fluxes
• Measuring the cosmic ray acceleration efficiency of a supernova remnant
• Interpretation of AMS-02 electrons and positrons data
• Gamma-Ray Observations of the Supernova Remnant RX J0852.0-4622 with the Fermi LAT
• X-Ray Measured Dynamics of Tycho's Supernova Remnant
• On the Expansion Rate, Age, and Distance of the Supernova Remnant G266.2-1.2 (Vela Jr.)
• A new SNR with TeV shell-type morphology: HESS J1731-347
• Searches for continuous gravitational waves from nine young supernova remnants
• Evolution of high-energy particle distribution in Supernova Remnants
• Study of TeV shell supernova remnants at gamma-ray energies
• Deeper H.E.S.S. observations of Vela Junior (RX J0852.0$-$4622): Morphology studies and resolved spectroscopy
• An X-ray and Radio Study of the Varying Expansion Velocities in Tycho's Supernova Remnant
• A detailed study of the interstellar protons toward the TeV $\gamma$-ray SNR RX J0852.0$-$4622 (G266.2$-$1.2, Vela Jr.); a third case of the $\gamma$-rays and ISM spatial correspondence
• A CR-hydro-NEI Model of Multi-wavelength Emission from the Vela Jr. Supernova Remnant (SNR RX J0852.0-4622)
• Forward Shock Proper Motions of Kepler's Supernova Remnant
• A new nearby pulsar wind nebula overlapping the RX J0852.0-4622 supernova remnant
• The Three-Dimensional Expansion of the Ejecta from Tycho's Supernova Remnant
• Expansion measurement of Supernova Remnant RX J1713.7-3946
• Perspective on the cosmic-ray electron spectrum above TeV
• Comparing supernova remnants around strongly magnetized and canonical pulsars
• Galactic survey of 44Ti sources with the IBIS telescope onboard INTEGRAL
• Systematic Study of Acceleration Efficiency in Young Supernova Remnants with Nonthermal X-ray Observations
• ALMA CO Observations of the Mixed-Morphology Supernova Remnant W49B: Efficient Production of Recombining Plasma and Hadronic Gamma-rays via Shock-Cloud Interactions
• Non-Thermal X-ray Emission from the Northwestern Rim of the Galactic Supernova Remnant G266.2-1.2 (RX J0852.0-4622)
• TeV cosmic ray nuclei acceleration in shell-type supernova remnants with hard $\gamma$-ray spectra
• The Refined Shock Velocity of the X-Ray Filaments in the RCW 86 Northeast Rim
• Modeling of the spatially resolved non-thermal emission from the Vela Jr. supernova remnant
• Multi-messenger constraints to the local emission of cosmic-ray electrons
• The Expansion of the Forward Shock of 1E 0102.2-7219 in X-rays
• Fermi Large Area Telescope observations of the supernova remnant HESS J1731-347
• The Expansion of the Young Supernova Remnant 0509-68.7 (N103B)
• An Expanding Shell of Neutral Hydrogen Associated with SN 1006: Hints for the Single-Degenerate Origin and Faint Hadronic Gamma-Rays
• Hydrodynamic simulations of the interaction of supernova shock waves with a clumpy environment: the case of the RX J0852.0-4622 (Vela Jr) supernova remnant
• Observational constraints on the maximum energies of accelerated particles in supernova remnants: low maximum energies and a large variety
• Search for Sc-K line emission from RX J0852.0--4622 Supernova remnant with Suzaku
• Nonthermal emission properties of the northwestern rim of supernova remnant RX J0852-4622
• Multi-Year X-ray Variations of Iron-K and Continuum Emissions in the Young Supernova Remnant Cassiopeia A
• Statistically study the optimal local sources for cosmic ray nuclei and electron
• On the point source approximation of nearby cosmic-ray sources
• SRG/eROSITA and XMM-Newton observations of Vela Jr
• Electron Acceleration in Middle-age Shell-type $\gamma$-Ray Supernova Remnants
• Gamma rays from reaccelerated particles at supernova remnant shocks
• Constraining the coherence scale of the interstellar magnetic field using TeV gamma-ray observations of supernova remnants
• Suzaku study on the Ejecta of the Supernova Remnant G272.2$-$3.2
• Molecular and atomic gas in the young TeV γ-ray SNRs RX J1713.7-3946 and RX J0852.0-4622; evidence for the hadronic production of γ-rays
• Constraining the Age and Distance of the Galactic Supernova Remnant G156.2+5.7 by H-alpha Expansion Measurements
• Searching for an interstellar medium association for HESS J1534-571
• Study on the escape timescale of high-energy particles from supernova remnants through thermal X-ray properties
• Simulating TeV gamma-ray morphologies of shell-type supernova remnants
• Search for broad absorption lines in spectra of stars in the field of supernova remnant RX J0852.0-4622 (Vela Jr.)
• Far-Ultraviolet Spectral Images of the Vela Supernova Remnant: Supplements and Comparisons with other Wavelength Images
• A New Model For Vela Jr. Supernova Remnant
• Non-Thermal Radio and Gamma-Ray Emission from a Supernova Remnant by the Blast Wave Breaking Out of the Circumstellar Matter
• Unraveling the Effects of Dense Medium on a Near to Bohm-Limit Acceleration in Kepler's SNR