Brand identity

Chevalier, Michel; Mazzalovo, Gérald

doi:10.1057/9780230508897_5

Cited by 2 publications

(3 citation statements)

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“…6 shows the simulated radio light curves for two different models. The standard model in Chevalier (1996), relating K and B 2 to the thermal energy density, proved inadequate in our simulations. It provides a fair match to the luminosity rise around day 700, but the subsequent peak in luminosity decreases too quickly as the forward shock leaves the shell.…”

Section: Simulation Of the Radio Light Curvementioning

confidence: 84%

“…One must therefore appeal to simpler scaling relations to infer the behaviour of these quantities in terms of others that are well understood. Chevalier (1996) has outlined several possibilities for how the synchrotron luminosity pa-rameters might scale, although many other variations may exist. The radiating electron energy density (∝ K) and the magnetic energy density (∝ B 2 ) may scale with the thermal energy density (∝ P ), since these are thought to be built up by high-pressure turbulent motions in the shock, or may also scale with the thermal particle density if a constant fraction of the thermal particle density is injected in the acceleration process.…”

Section: Hydrodynamical Simulationmentioning

confidence: 99%

“…As a test of our methods, we initially computed radio light curves for a hydrodynamic simulation of a self-similar shock expansion to demonstrate that we could correctly reproduce the decline rates of the synchrotron luminosity presented in Chevalier (1996) for the different models therein. We then applied this code to the more complex simulation of Dwarkadas et al (2010), scaling the simulated light curves to the radio data.…”

Section: Simulation Of the Radio Light Curvementioning

confidence: 99%

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Performing a stellar autopsy using the radio-bright remnant of SN 1996cr

Meunier

Bauer

Dwarkadas

et al. 2013

Monthly Notices of the Royal Astronomical Society

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We present newly reduced archival radio observations of SN 1996cr in the Circinus Galaxy from the Australia Telescope Compact Array (ATCA) and the Molonglo Observatory Synthesis Telescope (MOST), and attempt to model its radio light curves using recent hydrodynamical simulations of the interaction between the SN ejecta and the circumstellar material (CSM) at X-ray wavelengths. The radio data within the first 1000 days show clear signs of free-free absorption (FFA), which decreases gradually and is minimal above 1.4 GHz after day ∼3000. Constraints on the FFA optical depth provide estimates of the CSM free electron density, which allows insight into the ionisation of SN 1996cr's CSM and offers a test on the density distribution adopted by the hydrodynamical simulation. The intrinsic spectral index of the radiation shows evidence for spectral flattening, which is characterised by α = 0.852 ± 0.002 at day 3000 and a decay rate of ∆α = -0.014 ± 0.001 yr −1 . The striking similarity in the spectral flattening of SN 1987A, SN 1993J, and SN 1996cr suggests this may be a relatively common feature of SNe/CSM shocks. We adopt this spectral index variation to model the synchrotron radio emission of the shock, and consider several scalings that relate the parameters of the hydrodynamical simulation to the magnetic field and electron distribution. The simulated light curves match the large-scale features of the observed light curves, but fail to match certain tightly constraining sections. This suggests that simple energy density scalings may not be able to account for the complexities of the true physical processes at work, or alternatively, that the parameters of the simulation require modification in order to accurately represent the surroundings of SN 1996cr.

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Section: Simulation Of the Radio Light Curvementioning

confidence: 84%

Section: Hydrodynamical Simulationmentioning

confidence: 99%

Section: Simulation Of the Radio Light Curvementioning

confidence: 99%

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Performing a stellar autopsy using the radio-bright remnant of SN 1996cr

Meunier

Bauer

Dwarkadas

et al. 2013

Monthly Notices of the Royal Astronomical Society

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Essence: The Structure and Dynamics of the Brand

Barnham¹

2009

International Journal of Market Research

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The concept of ‘brand essence’ is relatively well established in marketing circles. It has come to the fore as a way for marketers to better understand their brands and also as a benchmark to evaluate brand activities. In some quarters, however, the concept has encountered more resistance. It is seen by many in the creative community as something that oversimplifies the marketing process and limits the power of the brand. The main argument of this paper is that brand essence has been fundamentally misunderstood. This has resulted in a number of negative consequences for the branding process. However, this paper will also show how the concept still has much to offer marketing professionals. A new, and more relevant, interpretation of brand essence is put forward in this paper, which recognises the intrinsically relational and dynamic aspects of the concept. As such, it creates a new platform upon which we can build our understanding of brands.

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Brand identity

Cited by 2 publications

References 0 publications

Performing a stellar autopsy using the radio-bright remnant of SN 1996cr

Performing a stellar autopsy using the radio-bright remnant of SN 1996cr

Essence: The Structure and Dynamics of the Brand

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