A 20 Year Radio Light Curve for the Young Supernova Remnant G1.9+0.3
arXiv:0806.1952 · doi:10.1111/j.1745-3933.2008.00514.x
Abstract
The radio source G1.9+0.3 has recently been identified as the youngest known Galactic supernova remnant, with a putative age of ~100 years. We present a radio light curve for G1.9+0.3 based on 25 epochs of observation with the Molonglo Observatory Synthesis Telescope, spanning 20 years from 1988 to 2007. These observations are all at the same frequency (843 MHz) and comparable resolutions (43" x 91" or 43" x 95") and cover one fifth of the estimated lifetime of the supernova remnant. We find that the flux density has increased at a rate of 1.22 +0.24/-0.16 per cent per year over the last two decades, suggesting that G1.9+0.3 is undergoing a period of magnetic field amplification.
5 pages, 4 figures, to be published in MNRAS Letters
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Cited by in corpus (13)
- Radio Evolution of Supernova Remnants Including Non-linear Particle Acceleration: Insights from Hydrodynamic Simulations
- Asymmetric Expansion of the Youngest Galactic Supernova Remnant G1.9+0.3
- Radio Observations of Supernova Remnant G1.9+0.3
- The Hard X-Ray View of the Young Supernova Remnant G1.9+0.3
- Nonuniform Expansion of the Youngest Galactic Supernova Remnant G1.9+0.3
- Modeling SNR G1.9+0.3 as a Supernova Inside a Planetary Nebula
- TeV γ-ray observations of the young synchrotron-dominated SNRs G1.9+0.3 and G330.2+1.0 with H.E.S.S
- Non-thermal emission from the reverse shock of the youngest galactic Supernova remnant G1.9+0.3
- Expected gamma-ray emission of supernova remnant SN 1987A
- Nonthermal properties of supernova remnant G1.9+0.3
- SN 1885A and supernova remnants in the centre of M31 with LOFAR
- A Possible Gamma-Ray Enhancement Event in Tycho's Supernova Remnant
- Brightening and Fading in the Youngest Galactic Supernova Remnant G1.9+0.3: 13 years of monitoring with the Chandra X-ray Observatory