Suzaku Discovery of Fe K-Shell Line from the O-Rich SNR G292.0+1.8

Abstract

We report the Suzaku/XIS results of the Galactic oxygen-rich supernova remnant (SNR), G292.0+1.8, a remnant of a core-collapse supernova. The X-ray spectrum of G292.0+1.8 consists of two type plasmas, one is in collisional ionization equilibrium (CIE) and the other is in non-equilibrium ionization (NEI). The CIE plasma has nearly solar abundances, and hence would be originated from the circumstellar and interstellar mediums. The NEI plasma has super-solar abundances, and the abundance pattern indicates that the plasma originates from the supernova ejecta with a main sequence of 30-35 Msolar. Iron K-shell line at energy of 6.6 keV is detected for the first time in the NEI plasma.

14 pages, 5 figures and 1 table, accepted for publication in PASJ

References in corpus (6)

• A Half-Megasecond Chandra Observation of the Oxygen-Rich Supernova Remnant G292.0+1.8
• Discovery of the recombining plasma in the south of the Galactic center; a relic of the past Galactic center activity?
• X-ray Emitting Ejecta in Puppis A Observed with Suzaku
• The (Re-)Discovery of G350.1-0.3: A Young, Luminous Supernova Remnant and Its Neutron Star
• Asymmetric Ejecta Distribution in SN 1006
• The Outer Shock of the Oxygen-Rich Supernova Remnant G292.0+1.8: Evidence for the Interaction with the Stellar Winds from its Massive Progenitor

Cited by in corpus (10)

• The gas-to-extinction ratio and the gas distribution in the Galaxy
• Progenitor Mass Distribution of Core-Collapse Supernova Remnants in Our Galaxy and Magellanic Clouds based on Elemental Abundances
• Detailed X-Ray Mapping of the Shocked Ejecta and Circumstellar Medium in the Galactic Core-Collapse Supernova Remnant G292.0+1.8
• Quantitative Age Estimation of Supernova Remnants and Associated Pulsars
• X-ray ejecta kinematics of the Galactic core-collapse supernova remnant G292.0+1.8
• Hitomi Observations of the LMC SNR N132D: Highly Redshifted X-ray Emission from Iron Ejecta
• Suzaku study on the Ejecta of the Supernova Remnant G272.2$-$3.2
• The Cold Dust Content of the Oxygen-Rich Supernova Remnant G292.0+1.8
• A Search for Unbound Stellar Companions to Pulsar J1124-5916
• SNR G292.0+1.8: A Remnant of a Low-Mass Progenitor Stripped-Envelope Supernova