Some properties of synchrotron radio and inverse-Compton gamma-ray images of supernova remnants
arXiv:0901.4258 · doi:10.1111/j.1365-2966.2009.14563.x
Abstract
The synchrotron radio maps of supernova remnants (SNRs) in uniform interstellar medium and interstellar magnetic field (ISMF) are analyzed, allowing different `sensitivity' of injection efficiency to the shock obliquity. The very-high energy gamma-ray maps due to inverse Compton process are also synthesized. The properties of images in these different wavelength bands are compared, with particular emphasis on the location of the bright limbs in bilateral SNRs. Recent H.E.S.S. observations of SN 1006 show that the radio and IC gamma-ray limbs coincide, and we found that this may happen if: i) injection is isotropic but the variation of the maximum energy of electrons is rather quick to compensate for differences in magnetic field; ii) obliquity dependence of injection (either quasi-parallel or quasi-perpendicular) and the electron maximum energy is strong enough to dominate magnetic field variation. In the latter case, the obliquity dependence of the injection and the maximum energy should not be opposite. We argue that the position of the limbs alone and even their coincidence in radio, X-rays and gamma-rays, as it is discovered by H.E.S.S. in SN 1006, cannot be conclusive about the dependence of the electron injection efficiency, the compression/amplification of ISMF and the electron maximum energy on the obliquity angle.
arXiv commentAccepted for publication in MNRAS
References in corpus (12)
- Primary particle acceleration above 100 TeV in the shell-type Supernova Remnant RX J1713.7-3946 with deep H.E.S.S. observations
- A detailed spectral and morphological study of the gamma-ray supernova remnant RX J1713.7-3946 with H.E.S.S
- Acceleration Rates and Injection Efficiencies in Oblique Shocks
- Theory of cosmic ray production in the supernova remnant RX J1713.7-3946
- The nature of bilateral supernova remnants
- On the Origin of Asymmetries in Bilateral Supernova Remnants
- Radio and X-ray Profiles in Supernova Remnants Undergoing Efficient Cosmic Ray Production
- Aspect angle for interstellar magnetic field in SN 1006
- Arguments against a dominantly hadronic origin of the VHE radiation from the supernova remnant RX J1713-3946
- 3-D Model of Broadband Emission from Supernova Remnants Undergoing Non-linear Diffusive Shock Acceleration
- Morphology of synchrotron emission in young supernova remnants
- Artificial broadening of the high-energy end of electron spectrum in supernova remnants
Cited by in corpus (12)
- Constraints on local interstellar magnetic field from non-thermal emission of SN1006
- 3D Simulations of the Thermal X-ray Emission from Young Supernova Remnants Including Efficient Particle Acceleration
- Effects of non-uniform interstellar magnetic field on synchrotron X-ray and inverse-Compton gamma-ray morphology of SNRs
- Predicted gamma-ray image of SN 1006 due to inverse Compton emission
- Nonthermal emission properties of the northwestern rim of supernova remnant RX J0852-4622
- Radio, X-ray and gamma-ray surface brightness profiles as powerful diagnostic tools for non-thermal SNR shells
- Radio polarization maps of shell-type SNRs II. Sedov models with evolution of turbulent magnetic field
- Particle acceleration, escape and non-thermal emission from core-collapse supernovae inside non-identical wind-blown bubbles
- How does the stellar wind influence the radio morphology of a supernova remnant?
- Constraints on magnetic field strength in the remnant SN1006 from its nonthermal images
- Hadronic gamma-ray images of Sedov supernova remnants
- Morphology of supernova remnants and their halos