3,830 research outputs found

    1861-06-10 S.R. Devereux writes to Governor Washburn about discharge for Senator Bridges\u27 son

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    https://digitalmaine.com/cw_me_2nd_regiment_corr/1048/thumbnail.jp

    A multi-scale study of infrared and radio emission from Scd galaxy M33

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    We investigate the energy sources of the infrared (IR) emission and their relation to the radio continuum emission at various spatial scales within the Scd galaxy M33. We use the wavelet transform to analyze IR data at the Spitzer wavelengths of 24, 70, and 160μ\mum, as well as recent radio continuum data at 3.6cm and 20cm. An Hα\alpha map serves as a tracer of the star forming regions and as an indicator of the thermal radio emission. We find that the dominant scale of the 70μ\mum emission is larger than that of the 24μ\mum emission, while the 160μ\mum emission shows a smooth wavelet spectrum. The radio and Hα\alpha maps are well correlated with all 3 MIPS maps, although their correlations with the 160μ\mum map are weaker. After subtracting the bright HII regions, the 24 and 70μ\mum maps show weaker correlations with the 20cm map than with the 3.6cm map at most scales. We also find a strong correlation between the 3.6cm and Hα\alpha emission at all scales. Comparing the results with and without the bright HII regions, we conclude that the IR emission is influenced by young, massive stars increasingly with decreasing wavelength from 160 to 24μ\mum. The radio-IR correlations indicate that the warm dust-thermal radio correlation is stronger than the cold dust-nonthermal radio correlation at scales smaller than 4kpc. A perfect 3.6cm-Hα\alpha correlation implies that extinction has no significant effect on Hα\alpha emitting structures.Comment: 15 pages, 10 figures, accepted for publication in the Astronomy and Astrophysics Journa

    Accomplice, patron, go-between? A role to play with poor migrant Qur’anic students in northern Nigeria

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    What does it mean to conduct ethnographic research in a context where inequalities are pervasive? Drawing on experiences conducting research with poor migrant Qur’anic students (almajirai) in Kano, northern Nigeria, this article explores the challenges of establishing productive and ethical research relationships with informants whose social and socioeconomic status is significantly lower than that of the researcher. The article argues that large socioeconomic and educational inequalities demand a rethinking of the subject positions available to researchers in such contexts. In the article, I consider in turn my roles as an ‘accomplice’ of exclusionary elite behaviour, as a ‘patron’ for my informants, and as a ‘go-between’ facilitating access for them to otherwise inaccessible ‘social microworlds’
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