--- title: "Gravitational-to-Electromagnetic Waves Conversion and Gamma-Ray Bursts Calorimetry: The GRB980425/SN1998bw 1049 ,! erg Radio Emission • CBPF Index" description: "CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community." canonical_url: "https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb42b" locale: en meta: "og:description": "CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community." "og:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_~R3Jhdml0YXRpb25hbC10by1FbGVjdHJvbWFnbmV0aWMgV2F2ZXMgQ29udmVyc2lvbiBhbmQgR2FtbWEtUmF5IEJ1cnN0cyBDYWxvcmltZXRyeTogVGhlIEdSQjk4MDQyNS9TTjE5OThidyA8bWF0aD4gMTA0OSAsITwvbWF0aD4gZXJnIFJhZGlvIEVtaXNzaW9u%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_Herman%2BJ.%2BMosquera%2BCuesta%2Cdetalhe_2001%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmI0MmIi%2Cs_UIn9S8nlgwwwY7_j.png" "og:image:height": "600" "og:image:type": image/png "og:image:width": "1200" "og:title": "Gravitational-to-Electromagnetic Waves Conversion and Gamma-Ray Bursts Calorimetry: The GRB980425/SN1998bw 1049 ,! erg Radio Emission • CBPF Index" "twitter:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_~R3Jhdml0YXRpb25hbC10by1FbGVjdHJvbWFnbmV0aWMgV2F2ZXMgQ29udmVyc2lvbiBhbmQgR2FtbWEtUmF5IEJ1cnN0cyBDYWxvcmltZXRyeTogVGhlIEdSQjk4MDQyNS9TTjE5OThidyA8bWF0aD4gMTA0OSAsITwvbWF0aD4gZXJnIFJhZGlvIEVtaXNzaW9u%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_Herman%2BJ.%2BMosquera%2BCuesta%2Cdetalhe_2001%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmI0MmIi%2Cs_UIn9S8nlgwwwY7_j.png" --- > Index of every page on this site: [llms.txt](https://index.cbpf.br/llms.txt) **Physics Note****Published** # **Gravitational-to-Electromagnetic Waves Conversion and Gamma-Ray Bursts Calorimetry: The GRB980425/SN1998bw **∼1049  ⁣\\\sim 10^{49} \\,\\!\∼1049** erg Radio Emission** **Herman J. Mosquera Cuesta** 2001 [**Download PDF **0.2 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbb42b/pdf) [**Contact owner**](mailto:apub@cbpf.br?subject=Gravitational-to-Electromagnetic%20Waves%20Conversion%20and%20Gamma-Ray%20Bursts%20Calorimetry%3A%20The%20GRB980425%2FSN1998bw%20%3Cmath%3E%201049%20%2C!%3C%2Fmath%3E%20erg%20Radio%20Emission) ## **Publication details**
Authors
Herman J. Mosquera Cuesta
Type
Physics Note
Status
Published
Publication date
2001
Description
The unusual features of supernova (SN) 1998bw and its apparent association with the gamma-ray burst (GRB) event GRB980425 were highlighted by Kulkarni et al. [1,2] . At its peak SN1998bw was anomalously superluminous in radio wavelengths with an inferred fluence: <math>E_{radio} \geq 10^{49}\,\!</math>erg [Kulkarni, S., et al., Nat. 395, 663 (1998)], while the apparent expansion velocity of its ejecta <math>(\sim 10^{-5}M_\odot)\,\!</math> suggests a shock wave moving relativistically <math>(V_{exp} \sim 2c)\,\!</math>. The SN1998bw unique properties strengthen the case for it to be linked with GRB980425. I present a consistent, novel mechanism to explain the peculiar event SN1998bw and similar phenomena in GRBs: Conversion of powerful, high frequency <math>(\sim 2kHz)\,\!</math> gravitational waves (GWs) into electromagnetic waves (EMWs) might have taken place during SN1998bw. Yet, conversion of GRB photons into GWs, as advanced in Johnston, Ruffini and Zerilli [Phys. Lett 49B, 185 (1974)], may also occur. These processes can produce GRBs depleted in <math> \gamma-rays \,\!</math> but enhanced in x-rays, for instance, or even more plausible to induce GRB, those with no optical afterglow. The class of GWs needed to drive these gamma-ray bursts' calorimetric changes may be generated by: a) the non-axisymmetric dynamics of a torus surrounding the hypernova (or failed supernova) magnetized stellar-mass black hole (BH) remnant, as in the van Putten's mechanism for driving long GRBs powered by the BH spin-energy [Phys. Rev. Lett. 87, 091101 (2001) [8], or in Van Putten and Ostriker [Astrophys. J. 552, L32 (2001)] mechanism for accounting for the bi-modal distribution in durations in GRBs, where the torus magneto-hydrodynamics may be dominated by either hyper-accretion on to a slowly spinning BH or suspended accretion on to a fast rotating BH. b) the just formed black hole with eletromagnetic structure (EMBH); as in the Ruffini et al. GRBs central engine mechanism [Astrophys. J. 555, L107 (2001); Astrophys. J. 555, L113 (2001)] [9], provided the issue concerning the origin of the black hole charge be suitably clarified. In both of these mechanisms the total energy radiated as GWs is about <math>\rm \Delta E_{GWs} \sim 10^{53}erg (\frac{M}{10 M_\odot})\,\!</math>, which for the conversion efficiency estimated here turns out to be enough to explain the superluminous radio wavelength emission from SN1998bw. Thus, I argue this process could have induced the enhancement in the radio-luminosity of SN1998bw as evidenced in its light curve (Figure 2 in Ref.[1]), and optical light curve of GRB980326 [Bloom et al., Nature 401, 453 (1998)] and GRB990712 [Björnsson et al., Astrophys. J. 552, L121 (2001)]. Moreover, GWs-driven plasma density perturbations moving at the speed of light may up(or down)-convert fireball photons [10], which could render further substancial modifications of the gamma-ray burst/supernovae calorimetry.}
Year
2001
Number
CBPF-NF-058/01
Linked to a thesis
No
Linked to a grant
No
```json {"@context":"https://schema.org","@graph":[{"@id":"https://index.cbpf.br/en#website","@type":"WebSite","description":"O CBPF INDEX é o sistema de acompanhamento da produção científica e tecnológica do CBPF. Nele é possível obter a lista de publicações de artigos, livros, relatórios técnicos, etc de toda a comunidade do CBPF.","inLanguage":"en-US","name":"CBPF Index","url":"https://index.cbpf.br/en","publisher":{"@id":"https://index.cbpf.br/#identity"},"translationOfWork":{"@id":"https://index.cbpf.br/#website"}},{"@id":"https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb42b#webpage","@type":"WebPage","description":"CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community.","name":"Gravitational-to-Electromagnetic Waves Conversion and Gamma-Ray Bursts Calorimetry: The GRB980425/SN1998bw \u003Cmath> 1049 ,!\u003C/math> erg Radio Emission","url":"https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb42b","isPartOf":{"@id":"https://index.cbpf.br/en#website"},"potentialAction":[{"@type":"ReadAction","target":["https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb42b"]}],"primaryImageOfPage":{"@id":"https://index.cbpf.br/#logo"}},{"@id":"https://index.cbpf.br/#identity","@type":"Organization","alternateName":"CBPF","description":"Unidade de pesquisa do Ministério da Ciência, Tecnologia e Inovação dedicada à pesquisa básica em Física, suas aplicações e à formação científica.","email":"web@cbpf.br","legalName":"Centro Brasileiro de Pesquisas Físicas/CBPF","name":"Centro Brasileiro de Pesquisas Físicas","taxID":"04.044.443/0001-35","telephone":"+55-21-2141-7100","url":"https://cbpf.br","address":{"@type":"PostalAddress","streetAddress":"Rua Dr. Xavier Sigaud, 150","addressLocality":"Rio de Janeiro","addressRegion":"RJ","postalCode":"22290-180","addressCountry":"BR"},"logo":{"@id":"https://index.cbpf.br/#logo"},"sameAs":["https://twitter.com/cbpf_mcti"]},{"@id":"https://index.cbpf.br/#logo","@type":"ImageObject","caption":"Centro Brasileiro de Pesquisas Físicas","contentUrl":"https://index.cbpf.br/icon-512x512-light.png","inLanguage":"en-US","url":"https://index.cbpf.br/icon-512x512-light.png"}]} ``` ## Sitemap See the full [sitemap](https://index.cbpf.br/sitemap.md) for all pages.