Evolution of massive fields around a black hole in Horava gravity

We study the evolution of massive scalar field in the spacetime geometry of Kehagias-Sfetsos(KS) black hole in deformed Horava-Lifshitz(HL) gravity by numerical analysis. We find that the signature of HL theory is encoded in the quasinormal mode(QNM) phase of the evolution of field. The QNM phase in the evolution process lasts for a longer time in HL theory. QNMs involved in the evolution of massive field are calculated and find that they have a higher oscillation frequency and a lower damping rate than the Schwarzschild spacetime case. We also study the relaxation of field in the intermediate and asymptotic range and verified that behaviors of field in these phases are independent of the HL parameter and is identical to the Schwarzschild case.Comment: The article was fully rewritten, references added, accepted to GR

Land, labour and migrations : understanding Kerala's economic modernity

This paper seeks to map out the historical trajectory leading to a series of migrations in and from the erstwhile princely state of Travancore during 1900-70 in order to acquire and bring land under cultivation. It argues that these migrations undertaken with a moralistic and paternal mission of reclaiming ‘empty’ spaces into productive locations were a result of a specific form of economic modernity in Kerala as beckoned by colonialism and appropriated by a resolute local agency through a process of translation. The attempt is to disentangle the intertwining history of colonialism, capital and ‘native’ agency and thereby to capture the complex circumstances that unleashed a new discourse of development with land and hard work at the centre of its scheme. The transition was facilitated by a conforming social imaginary that not only dissented radically with the idea of leaving landscape empty and being idle but also advocated passionately the idea of using the opulent natural resources for the development of the self and the nation. Leading the transition the Syrian Christians were successful in wielding a new subjectivity of development with a specific authority over the modernity of Kerala as purogamana karshakar (forward-looking peasants). Key words: Economic modernity, translation, objectification, social imaginary, migration, modernisation, development discourse. JEL Classification: N5, P16, O13, O1

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Collection and estimation of zooplankton

Zooplankters are the diverse, delicate and often very beautiful assemblages of animals that drift in the waters of the world oceans. The name zooplankton is derived from the Greek: Zoon, animal; planktos, wandering. They play a key role in the marine food web by transferring the organic energy produced by the unicellular algae to higher trophic levels such as pelagic stocks. Because of their critical role as food source for larval and juvenile fish, the dynamics of zooplankton populations, their reproductive cycles, growth and survival rates are all important factors influencing recruitment of fish stocks and thereby the magnitude of fishery. Majority of them are microscopic, unicellular or multicellular forms with size ranging from a few microns to a millimeter or more. In addition to size variations, there are differences in morphological features and taxonomic position. The zooplankton plays an important role to study the faunal biodiversity of aquatic ecosystems