20 research outputs found

    BeppoSAX observations of the X-ray binary pulsar 4U1626-67

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    We report on observations of the low-mass X-ray binary 4U1626-67 performed during the BeppoSAX Science Verification Phase. We present the broad-band 0.1-100 keV pulse averaged spectrum, that is well fit by a two-component function: a 0.27 +/- 0.02 keV blackbody and an absorbed power law with a photon index of 0.89 +/- 0.02. A very deep and narrow absorption feature at 38 keV, attributable to electron cyclotron resonance, is clearly visible in the broad-band spectrum. It corresponds to a neutron star magnetic field strength of 3.3 x 10^{12} G. The 4U1626-67 pulse profiles show a dramatic dependance on energy: the transition between the low energy (E<10 keV) "bi-horned" shape to the high-energy (E>10 keV) sinusoidal profile is clearly visible in our data. The modulation index shows a monotonic increase with energy.Comment: 4 pages, 2 figures. Uses espcrc2.sty (included). To appear in Proceedings of "The Active X-ray Sky: Results from BeppoSAX and Rossi-XTE

    A Dynamical Principle For 3D-4D Interlinkage In Salpeter-like Equations

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    The half-century old Markov-Yukawa Transversality Principle (MYTPMYTP) which provides a theoretical rationale for the covariant instantaneous approximation (CIACIA) that underlies all Salpeter-like equations, is generalized to a covariant null-plane ansatz (CNPACNPA). A common characteristic of both formulations is an exact 3D-4D interlinkage of BS amplitudes which facilitates a two-tier description: the 3D form for spectroscopy, and the 4D form for transition amplitudes as 4D loop integrals. Some basic applications of MYTPMYTP on the covariant null plane (quark mass function, vacuum condensates, and decay constants) are given on the lines of earlier applications to these processes under CIACIA. PACS: 03.65.-w ; 03.65.Co ; 11.10.Qr ; 11.10.St Keywords: Markov-Yukawa Transversality Principle (MYTPMYTP); Salpeter-like eqs; Cov Instantaneity Ansatz (CIACIA); Cov Null-Plane Ansatz (CNPACNPA); 3D-4D interlinkage; Vertex function; 4D loopsComment: LaTeX file, 25 pages, to be published in Nuclear Phys.

    "The fruits of independence": Satyajit Ray, Indian nationhood and the spectre of empire

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    Challenging the longstanding consensus that Satyajit Ray's work is largely free of ideological concerns and notable only for its humanistic richness, this article shows with reference to representations of British colonialism and Indian nationhood that Ray's films and stories are marked deeply and consistently by a distinctively Bengali variety of liberalism. Drawn from an ongoing biographical project, it commences with an overview of the nationalist milieu in which Ray grew up and emphasizes the preoccupation with colonialism and nationalism that marked his earliest unfilmed scripts. It then shows with case studies of Kanchanjangha (1962), Charulata (1964), First Class Kamra (First-Class Compartment, 1981), Pratidwandi (The Adversary, 1970), Shatranj ke Khilari (The Chess Players, 1977), Agantuk (The Stranger, 1991) and Robertsoner Ruby (Robertson's Ruby, 1992) how Ray's mature work continued to combine a strongly anti-colonial viewpoint with a shifting perspective on Indian nationhood and an unequivocal commitment to cultural cosmopolitanism. Analysing how Ray articulated his ideological positions through the quintessentially liberal device of complexly staged debates that were apparently free, but in fact closed by the scenarist/director on ideologically specific notes, this article concludes that Ray's reputation as an all-forgiving, ‘everybody-has-his-reasons’ humanist is based on simplistic or even tendentious readings of his work

    Emerging Consensus on Labour Market Institutions and Implications for Developing Countries: From the Debates in India

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    This paper makes a critical intervention to on-going theoretical and policy debates in the economic analysis of labour market institutions (LMIs) in the context of recent debates in India. It focuses on the internal inconsistency of mainstream economic analyses of LMIs, in particular those based on the new institutional economics (NIE) approach, and what appears to be an emerging policy consensus on LMIs within the World Bank and the International Labour Organization (ILO). The paper draws out the possible ideological parallels in these two developments, despite different intellectual origins and intentions of those engaged in these debates. A corresponding modification in policy debates in India is observed in the shifting perspectives from the Second National Commission on Labour (SNCL) to the National Commission for Enterprises in the Unorganised Sector (NCEUS). The apparent emerging consensus in both the theoretical literature and policy debates reveals the tendency for researchers to focus on labour market outcomes and phenomenal forms of LMIs rather than the structures, processes, agencies and relations that underpin them. While this can be seen as an advancement from the traditional distortionist-institutionalist dichotomy, the tendency of this consensus to explain the persistence of seemingly inefficient institutions within the micro-level choice theoretic framework and its appeal to policy agendas on good governance, social capital, trust and civil society, render it vulnerable to appropriation by the mainstream. The paper argues that the emerging consensus on LMIs is an inadequate framework to inform effective policy propositions, and highlights the scope and opportunity for a political economy alternative
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