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15 results on '"Briggs, F.H."'

3. Deep HI imaging of galaxy cluster Abell 2218 at z=0.2

Author

Zwaan, M., van Dokkum, P.G., Verheijen, MAW, Briggs, F.H., Hibbard, JE, Rupen, MP, VanGorkom, JH, Kapteyn Astronomical Institute, and Astronomy

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Deep HI imaging with the Westerbork Synthesis Radio Telescope in the direction of Abell 2218 has resulted in the first detection of HI 21 cm emission at cosmological distance. The HI signal originates in a galaxy at a projected distance of 1.5 h(100)(-1) Mpc from the cluster core and is probably in the process of being accreted onto the cluster. The detection of this galaxy demonstrates that HI 21 cm emission line surveys at cosmological distances are feasible with present-day radio telescopes.

Published
2001

4. Interferometric Imaging with the 32 Element Murchison Wide-Field Array

Author

Ord, S., Mitchell, D., Wayth, Randall, Greenhill, L., Bernadi, G., Gleadow, A., Edgar, R.G., Clarke, M.A., Allen, G., Arcus, Wayne, Benkevitch, L., Bowman, J.D., Briggs, F.H., Bunton, J.D., Burns, S., Cappallo, R.J., Coles, W.A., Corey, B.E., DeSouza, L., Doeleman, S.S., Derome, M., Deshpande, A., Emrich, D., Goeke, M.R., Gopalakrishna, M.R., Herne, David, Hewitt, J.N., Kamini, P.A., Kaplan, D.L., Kasper, J.C., Kincaid, B.B., Kocz, J., Kowald, E., Kratzenberg, E., Kumar, D., Lonsdale, C., Lynch, Mervyn, McWhirter, S., Madhavi, S., Matejek, M., Morales, M., Morgan, E., Oberoi, D., Pathikulangara, J., Prabu, T., Rogers, A., Roshi, A., Salah, J., Schinkel, A., Udaya, S.N., Srivani, K., Stevens, J., Tingay, Steven, Vaccarella, A., Waterson, Mark, Ord, S., Mitchell, D., Wayth, Randall, Greenhill, L., Bernadi, G., Gleadow, A., Edgar, R.G., Clarke, M.A., Allen, G., Arcus, Wayne, Benkevitch, L., Bowman, J.D., Briggs, F.H., Bunton, J.D., Burns, S., Cappallo, R.J., Coles, W.A., Corey, B.E., DeSouza, L., Doeleman, S.S., Derome, M., Deshpande, A., Emrich, D., Goeke, M.R., Gopalakrishna, M.R., Herne, David, Hewitt, J.N., Kamini, P.A., Kaplan, D.L., Kasper, J.C., Kincaid, B.B., Kocz, J., Kowald, E., Kratzenberg, E., Kumar, D., Lonsdale, C., Lynch, Mervyn, McWhirter, S., Madhavi, S., Matejek, M., Morales, M., Morgan, E., Oberoi, D., Pathikulangara, J., Prabu, T., Rogers, A., Roshi, A., Salah, J., Schinkel, A., Udaya, S.N., Srivani, K., Stevens, J., Tingay, Steven, Vaccarella, A., and Waterson, Mark

Abstract

The Murchison Wide-Field Array (MWA) is a low-frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of reionization (EOR) and to probe the structure of the solar corona. Sited in western Australia, the full MWA will comprise 8192 dipoles grouped into 512 tiles and will be capable of imaging the sky south of 40° declination, from 80 MHz to 300 MHz with an instantaneous field of view that is tens of degrees wide and a resolution of a few arcminutes. A 32 station prototype of the MWA has been recently commissioned and a set of observations has been taken that exercise the whole acquisition and processing pipeline. We present Stokes I, Q, and U images from two ~4 hr integrations of a field 20° wide centered on Pictoris A. These images demonstrate the capacity and stability of a real-time calibration and imaging technique employing the weighted addition of warped snapshots to counter extreme wide-field imaging distortions.

Published
2010

5. The Murchison Widefield Array

Author

RFI2010, Mitchell, Daniel A., Greenhill, Lincoln J., Ord, Stephen M., Bernardi, Gianni, Wayth, Randall B., Edgar, Richard G., Clarke, Michael A., Dale, Kevin, Pfister, Hanspeter, Gleadow, Stewart J., Arcus, Wayne, Briggs, F.H., Benkevitch, L., Bowman, J.D., Bunton, J.D., Burns, S., Cappallo, R.J., Corey, B.E., de Oliveira-Costa, A., Desouza, L., Doeleman, S.S., Derome, M.F., Emrich, David, Glossop, Mark, Goeke, R., Gopala Krishna, M.R., Hazelton, B., Herne, David, Hewitt, J.N., Kamini, P.A., Kaplan, D.L., Kasper, J.C., Kincaid, B.B., Kocz, J., Kowald, E., Kratzenberg, E., Kumar, D., Lonsdale, C.J., Lynch, M.J., Madhavi, S., Matejek, M., McWhirter, S.R., Morales, M.F., Morgan, E., Oberoi, D., Pathikulangara, J., Prabu, T., Rogers, A., Salah, J.E., Sault, R.J., Udaya Shankar, N., Srivani, K.S., Stevens, J., Tingay, Steven, Vaccarella, A., Waterson, Mark, Webster, R.L., Whitney, A.R., Williams, A., Williams, C., RFI2010, Mitchell, Daniel A., Greenhill, Lincoln J., Ord, Stephen M., Bernardi, Gianni, Wayth, Randall B., Edgar, Richard G., Clarke, Michael A., Dale, Kevin, Pfister, Hanspeter, Gleadow, Stewart J., Arcus, Wayne, Briggs, F.H., Benkevitch, L., Bowman, J.D., Bunton, J.D., Burns, S., Cappallo, R.J., Corey, B.E., de Oliveira-Costa, A., Desouza, L., Doeleman, S.S., Derome, M.F., Emrich, David, Glossop, Mark, Goeke, R., Gopala Krishna, M.R., Hazelton, B., Herne, David, Hewitt, J.N., Kamini, P.A., Kaplan, D.L., Kasper, J.C., Kincaid, B.B., Kocz, J., Kowald, E., Kratzenberg, E., Kumar, D., Lonsdale, C.J., Lynch, M.J., Madhavi, S., Matejek, M., McWhirter, S.R., Morales, M.F., Morgan, E., Oberoi, D., Pathikulangara, J., Prabu, T., Rogers, A., Salah, J.E., Sault, R.J., Udaya Shankar, N., Srivani, K.S., Stevens, J., Tingay, Steven, Vaccarella, A., Waterson, Mark, Webster, R.L., Whitney, A.R., Williams, A., and Williams, C.

Published
2010

6. The Murchison Widefield Array: Design Overview

Author

Lonsdale, C.J., primary, Cappallo, R.J., additional, Morales, M.F., additional, Briggs, F.H., additional, Benkevitch, L., additional, Bowman, J.D., additional, Bunton, J.D., additional, Burns, S., additional, Corey, B.E., additional, deSouza, L., additional, Doeleman, S.S., additional, Derome, M., additional, Deshpande, A., additional, Gopala, M.R., additional, Greenhill, L.J., additional, Herne, D.E., additional, Hewitt, J.N., additional, Kamini, P.A., additional, Kasper, J.C., additional, Kincaid, B.B., additional, Kocz, J., additional, Kowald, E., additional, Kratzenberg, E., additional, Kumar, D., additional, Lynch, M.J., additional, Madhavi, S., additional, Matejek, M., additional, Mitchell, D.A., additional, Morgan, E., additional, Oberoi, D., additional, Ord, S., additional, Pathikulangara, J., additional, Prabu, T., additional, Rogers, A., additional, Roshi, A., additional, Salah, J.E., additional, Sault, R.J., additional, Shankar, N.U., additional, Srivani, K.S., additional, Stevens, J., additional, Tingay, S., additional, Vaccarella, A., additional, Waterson, M., additional, Wayth, R.B., additional, Webster, R.L., additional, Whitney, A.R., additional, Williams, A., additional, and Williams, C., additional

Published
2009
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10. Interferometric observations of Mars at 21-cm wavelength

Author

Briggs, F.H. and Drake, F.D.

Abstract

Continuum observations of Mars at 21 cm with the NRAO interferometer during the 1971 opposition give an integrated brightness temperature of 179±11K, a value for the surface dielectric constant in agreement with those determined by radar, and lead to a flat microwave spectrum.

Published
1972
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