Search Results - "Hewitt, D. M"

Spectropolarimetry and photometry of the early afterglow of the gamma-ray burst GRB 191221B by Buckley, D A H, Bagnulo, S, Britto, R J, Mao, J, Kann, D A, Cooper, J, Lipunov, V, Hewitt, D M, Razzaque, S, Kuin, N P M, Monageng, I M, Covino, S, Jakobsson, P, van der Horst, A J, Wiersema, K, Böttcher, M, Campana, S, D’Elia, V, Gorbovskoy, E S, Gorbunov, I, Groenewald, D N, Hartmann, D H, Kornilov, V G, Mundell, C G, Podesta, R, Thomas, J K, Tyurina, N, Vlasenko, D, van Soelen, B, Xu, D

“…ABSTRACT We report on results of spectropolarimetry of the afterglow of the long gamma-ray burst GRB 191221B, obtained with SALT/RSS and VLT/FORS2, as well as…”
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Arecibo observations of a burst storm from FRB 20121102A in 2016 by Hewitt, D M, Snelders, M P, Hessels, J W T, Nimmo, K, Jahns, J N, Spitler, L G, Gourdji, K, Hilmarsson, G H, Michilli, D, Ould-Boukattine, O S, Scholz, P, Seymour, A D

“…ABSTRACT FRB 20121102A is the first known fast radio burst (FRB) from which repeat bursts were detected, and one of the best-studied FRB sources in the…”
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The FRB 20121102A November rain in 2018 observed with the Arecibo Telescope by Jahns, J N, Spitler, L G, Nimmo, K, Hewitt, D M, Snelders, M P, Seymour, A, Hessels, J W T, Gourdji, K, Michilli, D, Hilmarsson, G H

“…ABSTRACT We present 849 new bursts from FRB 20121102A detected with the 305-m Arecibo Telescope. Observations were conducted as part of our regular campaign to…”
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A burst storm from the repeating FRB 20200120E in an M81 globular cluster by Nimmo, K, Hessels, J W T, Snelders, M P, Karuppusamy, R, Hewitt, D M, Kirsten, F, Marcote, B, Bach, U, Bansod, A, Barr, E D, Behrend, J, Bezrukovs, V, Buttaccio, S, Feiler, R, Gawroński, M P, Lindqvist, M, Orbidans, A, Puchalska, W, Wang, N, Winchen, T, Wolak, P, Wu, J, Yuan, J

“…ABSTRACT The repeating fast radio burst (FRB) source FRB 20200120E is exceptional because of its proximity and association with a globular cluster. Here we…”
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Milliarcsecond Localization of the Repeating FRB 20201124A by Nimmo, K., Hewitt, D. M., Hessels, J. W. T., Kirsten, F., Marcote, B., Bach, U., Blaauw, R., Burgay, M., Corongiu, A., Feiler, R., Gawroński, M. P., Giroletti, M., Karuppusamy, R., Keimpema, A., Kharinov, M. A., Lindqvist, M., Maccaferri, G., Melnikov, A., Mikhailov, A., Ould-Boukattine, O. S., Paragi, Z., Pilia, M., Possenti, A., Snelders, M. P., Surcis, G., Trudu, M., Venturi, T., Vlemmings, W., Wang, N., Yang, J., Yuan, J.

“…Abstract Very long baseline interferometric (VLBI) localizations of repeating fast radio bursts (FRBs) have demonstrated a diversity of local environments:…”
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Radio and optical observations of the possible AE Aqr twin, LAMOST J024048.51+195226.9 by Pretorius, M L, Hewitt, D M, Woudt, P A, Fender, R P, Heywood, I, Knigge, C, Miller-Jones, J C A, Buckley, D A H, Worters, H L, Potter, S B, Williams, D R A

“…ABSTRACT It was recently proposed that the cataclysmic variable (CV) LAMOST J024048.51+195226.9 may be a twin to the unique magnetic propeller system AE Aqr…”
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A MeerKAT survey of nearby nova-like cataclysmic variables by Hewitt, D M, Pretorius, M L, Woudt, P A, Tremou, E, Miller-Jones, J C A, Knigge, C, Castro Segura, N, Williams, D R A, Fender, R P, Armstrong, R, Groot, P, Heywood, I, Horesh, A, van der Horst, A J, Koerding, E, McBride, V A, Mooley, K P, Rowlinson, A, Stappers, B, Wijers, R A M J

“…ABSTRACT We present the results of MeerKAT radio observations of 11 nearby nova-like cataclysmic variables (CVs). We have detected radio emission from IM Eri,…”
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Bow shocks, nova shells, disc winds and tilted discs: the nova-like V341 Ara has it all by Castro Segura, N, Knigge, C, Acosta-Pulido, J A, Altamirano, D, del Palacio, S, Hernandez Santisteban, J V, Pahari, M, Rodriguez-Gil, P, Belardi, C, Buckley, D A H, Burleigh, M R, Childress, M, Fender, R P, Hewitt, D M, James, D J, Kuhn, R B, Kuin, N P M, Pepper, J, Ponomareva, A A, Pretorius, M L, Rodríguez, J E, Stassun, K G, Williams, D R A, Woudt, P A

“…ABSTRACT V341 Ara was recently recognized as one of the closest (d ≃ 150 pc) and brightest (V ≃ 10) nova-like cataclysmic variables. This unique system is…”
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A spectroscopic, photometric, polarimetric, and radio study of the eclipsing polar UZ Fornacis: the first simultaneous SALT and MeerKAT observations by Khangale, Z N, Potter, S B, Woudt, P A, Buckley, D A H, Semena, A N, Kotze, E J, Groenewald, D N, Hewitt, D M, Pretorius, M L, Fender, R P, Groot, P, Bloemen, S, Klein-Wolt, M, Körding, E, Le Poole, R, McBride, V A, Townsend, L, Paterson, K, Pieterse, D L A, Vreeswijk, P

“…ABSTRACT We present phase-resolved spectroscopy, photometry, and circular spectropolarimetry of the eclipsing polar UZ Fornacis. Doppler tomography of the…”
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Ion exchange adsorption and elution for recovering gold thiosulfate from leach solutions by Jeffrey, M.I., Hewitt, D.M., Dai, X., Brunt, S.D.

“…A new elution process for recovering gold thiosulfate from resins is described, and is based on the concept of synergistic ion exchange. In the presence of…”
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Safe Technical Innovation by D. Brock Hewitt, MD, MPH, MS, Ko Un Park, MD

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The FRB 20121102A November rain in 2018 observed with the Arecibo Telescope by Jahns, J. N, Spitler, L. G, Nimmo, K, Hewitt, D. M, Snelders, M. P, Seymour, A, Hessels, J. W. T, Gourdji, K, Michilli, D, Hilmarsson, G. H

“…Monthly Notices of the Royal Astronomical Society, Volume 519, Issue 1, February 2023, Pages 666-687 We present 849 new bursts from FRB 20121102A detected with…”
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A repeating fast radio burst source in a globular cluster by Kirsten, F., Marcote, B., Nimmo, K., Hessels, J. W. T., Bhardwaj, M., Tendulkar, S. P., Keimpema, A., Yang, J., Snelders, M. P., Scholz, P., Pearlman, A. B., Law, C. J., Peters, W. M., Giroletti, M., Paragi, Z., Bassa, C., Hewitt, D. M., Bach, U., Bezrukovs, V., Burgay, M., Buttaccio, S. T., Conway, J. E., Corongiu, A., Feiler, R., Forssén, O., Gawroński, M. P., Karuppusamy, R., Kharinov, M. A., Lindqvist, M., Maccaferri, G., Melnikov, A., Ould-Boukattine, O. S., Possenti, A., Surcis, G., Wang, N., Yuan, J., Aggarwal, K., Anna-Thomas, R., Bower, G. C., Blaauw, R., Burke-Spolaor, S., Cassanelli, T., Clarke, T. E., Fonseca, E., Gaensler, B. M., Gopinath, A., Kaspi, V. M., Kassim, N., Lazio, T. J. W., Leung, C., Li, D. Z., Lin, H. H., Masui, K. W., Mckinven, R., Michilli, D., Mikhailov, A. G., Ng, C., Orbidans, A., Pen, U. L., Petroff, E., Rahman, M., Ransom, S. M., Shin, K., Smith, K. M., Stairs, I. H., Vlemmings, W.

“…Fast radio bursts (FRBs) are flashes of unknown physical origin 1 . The majority of FRBs have been seen only once, although some are known to generate multiple…”
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A burst storm from the repeating FRB 20200120E in an M81 globular cluster by Nimmo, K, Hessels, J. W. T, Snelders, M. P, Karuppusamy, R, Hewitt, D. M, Kirsten, F, Marcote, B, Bach, U, Bansod, A, Barr, E. D, Behrend, J, Bezrukovs, V, Buttaccio, S, Feiler, R, Gawroński, M. P, Lindqvist, M, Orbidans, A, Puchalska, W, Wang, N, Winchen, T, Wolak, P, Wu, J, Yuan, J

“…The repeating fast radio burst (FRB) source FRB 20200120E is exceptional because of its proximity and association with a globular cluster. Here we report $60$…”
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Arecibo observations of a burst storm from FRB 20121102A in 2016 by Hewitt, D. M, Snelders, M. P, Hessels, J. W. T, Nimmo, K, Jahns, J. N, Spitler, L. G, Gourdji, K, Hilmarsson, G. H, Michilli, D, Ould-Boukattine, O. S, Scholz, P, Seymour, A. D

“…FRB 20121102A is the first known fast radio burst (FRB) from which repeat bursts were detected, and one of the best-studied FRB sources in the literature. Here…”
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Radio and optical observations of the possible AE Aqr twin, LAMOST J024048.51+195226.9 by Pretorius, M. L, Hewitt, D. M, Woudt, P. A, Fender, R. P, Heywood, I, Knigge, C, Miller-Jones, J. C. A, Buckley, D. A. H, Worters, H. L, Potter, S. B, Williams, D. R. A

“…Thorstensen (2020) recently argued that the cataclysmic variable (CV) LAMOST J024048.51+195226.9 may be a twin to the unique magnetic propeller system AE Aqr…”
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Milliarcsecond localisation of the repeating FRB 20201124A by Nimmo, K, Hewitt, D. M, Hessels, J. W. T, Kirsten, F, Marcote, B, Bach, U, Blaauw, R, Burgay, M, Corongiu, A, Feiler, R, Gawroński, M. P, Giroletti, M, Karuppusamy, R, Keimpema, A, Kharinov, M. A, Lindqvist, M, Maccaferri, G, Melnikov, A, Mikhailov, A, Ould-Boukattine, O. S, Paragi, Z, Pilia, M, Possenti, A, Snelders, M. P, Surcis, G, Trudu, M, Venturi, T, Vlemmings, W, Wang, N, Yang, J, Yuan, J

“…Very long baseline interferometric (VLBI) localisations of repeating fast radio bursts (FRBs) have demonstrated a diversity of local environments: from nearby…”
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Spectropolarimetry and photometry of the early afterglow of the gamma-ray burst GRB191221B by Buckley, D. A. H, Bagnulo, S, Britto, R. J, Mao, J, Kann, D. A, Cooper, J, Lipunov, V, Hewitt, D. M, Razzaque, S, Kuin, N. P. M, Monageng, I. M, Covino, S, Jakobsson, P, van der Horst, A. J, Wiersema, K, Böttcher, M, Campana, S, D'Elia, V, Gorbovskoy, E. S, Gorbunov, I, Groenewald, D. N, Hartmann, D. H, Kornilov, V. G, Mundell, C. G, Podesta, R, Thomas, J. K, Tyurina, N, Vlasenko, D, van Soelen, B, Xu, D

“…We report on results of spectropolarimetry of the afterglow of the long gamma-ray burst GRB 191221B, obtained with SALT/RSS and VLT/FORS2, as well as…”
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A repeating fast radio burst source in a globular cluster by Kirsten, F, Marcote, B, Nimmo, K, Hessels, J. W. T, Bhardwaj, M, Tendulkar, S. P, Keimpema, A, Yang, J, Snelders, M. P, Scholz, P, Pearlman, A. B, Law, C. J, Peters, W. M, Giroletti, M, Paragi, Z, Bassa, C, Hewitt, D. M, Bach, U, Bezrukovs, V, Burgay, M, Buttaccio, S. T, Conway, J. E, Corongiu, A, Feiler, R, Forssén, O, Gawroński, M. P, Karuppusamy, R, Kharinov, M. A, Lindqvist, M, Maccaferri, G, Melnikov, A, Ould-Boukattine, O. S, Possenti, A, Surcis, G, Wang, N, Yuan, J, Aggarwal, K, Anna-Thomas, R, Bower, G. C, Blaauw, R, Burke-Spolaor, S, Cassanelli, T, Clarke, T. E, Fonseca, E, Gaensler, B. M, Gopinath, A, Kaspi, V. M, Kassim, N, Lazio, T. J. W, Leung, C, Li, D. Z, Lin, H. H, Masui, K. W, Mckinven, R, Michilli, D, Mikhailov, A, Ng, C, Orbidans, A, Pen, U. L, Petroff, E, Rahman, M, Ransom, S. M, Shin, K, Smith, K. M, Stairs, I. H, Vlemmings, W

“…Fast radio bursts (FRBs) are exceptionally luminous flashes of unknown physical origin, reaching us from other galaxies (Petroff et al. 2019). Most FRBs have…”
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Burst timescales and luminosities as links between young pulsars and fast radio bursts by Nimmo, K., Hessels, J. W. T., Kirsten, F., Keimpema, A., Cordes, J. M., Snelders, M. P., Hewitt, D. M., Karuppusamy, R., Archibald, A. M., Bezrukovs, V., Bhardwaj, M., Blaauw, R., Buttaccio, S. T., Cassanelli, T., Conway, J. E., Corongiu, A., Feiler, R., Fonseca, E., Forssén, O., Gawroński, M., Giroletti, M., Kharinov, M. A., Leung, C., Lindqvist, M., Maccaferri, G., Marcote, B., Masui, K. W., Mckinven, R., Melnikov, A., Michilli, D., Mikhailov, A. G., Ng, C., Orbidans, A., Ould-Boukattine, O. S., Paragi, Z., Pearlman, A. B., Petroff, E., Rahman, M., Scholz, P., Shin, K., Smith, K. M., Stairs, I. H., Surcis, G., Tendulkar, S. P., Vlemmings, W., Wang, N., Yang, J., Yuan, J. P.

“…Fast radio bursts (FRBs) are extragalactic radio flashes of unknown physical origin. Their high luminosities and short durations require extreme energy…”
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