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The effect of porosity of dust particles on polarization and color with special reference to comets

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The effect of porosity of dust particles on polarization and color with special reference to comets

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dc.contributor.author Sen, A. K. es_ES
dc.contributor.author Botet, R. es_ES
dc.contributor.author Vilaplana Cerda, Rosario Isabel es_ES
dc.contributor.author Choudhury, Naznin R es_ES
dc.contributor.author Gupta, Ranjan es_ES
dc.date.accessioned 2018-11-14T21:03:40Z
dc.date.available 2018-11-14T21:03:40Z
dc.date.issued 2017 es_ES
dc.identifier.issn 0022-4073 es_ES
dc.identifier.uri http://hdl.handle.net/10251/112509
dc.description.abstract [EN] Cosmic dust particles are mostly responsible for polarization of the light that we observe from astrophysical objects. They also lead to color-extinction, thermal re-emission and other scattering related phenomena. Micrometric dust particles are often made of smaller constituent (nanometric grains). They are characterized by their size (average radius), chemical composition and morphology (including porosity). In the present work, we address the question of the role of the dust particle porosity on light polarization and color, using Discrete Dipole Approximation (DDA) light scattering code. To this purpose, we develop an algorithm to generate dust particles of arbitrary values of porosity. In brief, starting from a compact spherical ensemble of dipoles,randomly the dipoles are removed one by one, such that the remaining dipoles remain connected within their neighbours. We stop the removal process when the desired porosity is obtained. Then we compute and study the optical properties of the porous dust particle. The main objective of this paper is to develop a tool to generate dust particles with an arbitrary value of porosity and to study the effect of porosity on their light scattering properties. As a possible application, we simulate cometary polarization and color values which grossly match with the observed ones for the comet 1P/Halley, leaving scope for future work. es_ES
dc.description.sponsorship R.B. thanks the Assam University, Silchar, for hospitality in the framework of 'Global Initiative for Academic Network' (GIAN) programme from MHRD, April 2016. The authors AKS and RV thank Erasmus Mundus - NAMASTE programme for funds to do this collaborative work. Finally, we are thankful to anonymous referees of this paper, due to whose comments we believe the quality of paper has improved.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Journal of Quantitative Spectroscopy and Radiative Transfer es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Dust es_ES
dc.subject Extinction- dust es_ES
dc.subject Polarization- dust es_ES
dc.subject Color- comet es_ES
dc.subject Porous es_ES
dc.subject Aggregate es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title The effect of porosity of dust particles on polarization and color with special reference to comets es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jqsrt.2017.05.009 es_ES
dc.rights.accessRights Abierto es_ES
dc.date.embargoEndDate 2019-09-01 es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Sen, AK.; Botet, R.; Vilaplana Cerda, RI.; Choudhury, NR.; Gupta, R. (2017). The effect of porosity of dust particles on polarization and color with special reference to comets. Journal of Quantitative Spectroscopy and Radiative Transfer. 198:164-178. doi:10.1016/j.jqsrt.2017.05.009 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.jqsrt.2017.05.009 es_ES
dc.description.upvformatpinicio 164 es_ES
dc.description.upvformatpfin 178 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 198 es_ES
dc.relation.pasarela S\337492 es_ES
dc.contributor.funder European Commission


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