1,315 results on '"Markoff, S"'
Search Results
302. A LOFAR census of millisecond pulsars
- Author
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Kondratiev, V.I., Verbiest, J.P.W., Hessels, J.W.T., Bilous, A., Stappers, B.W., Kramer, M., Keane, E.F., Noutsos, A., Osłowski, S., Breton, R.P., Hassall, T.E., Alexov, A., Cooper, S., Falcke, H., Grießmeier, J.-M., Karastergiou, A., Kuniyoshi, M., Pilia, M., Sobey, C, Veen, S. ter, Leeuwen, J. van, Weltevrede, P., Bell, M.E., Broderick, J.W., Corbel, S., Eislöffel, J., Markoff, S., Rowlinson, A., Swinbank, J.D., Wijers, R.A.M.J., Wijnands, R., Zarka, P., Kondratiev, V.I., Verbiest, J.P.W., Hessels, J.W.T., Bilous, A., Stappers, B.W., Kramer, M., Keane, E.F., Noutsos, A., Osłowski, S., Breton, R.P., Hassall, T.E., Alexov, A., Cooper, S., Falcke, H., Grießmeier, J.-M., Karastergiou, A., Kuniyoshi, M., Pilia, M., Sobey, C, Veen, S. ter, Leeuwen, J. van, Weltevrede, P., Bell, M.E., Broderick, J.W., Corbel, S., Eislöffel, J., Markoff, S., Rowlinson, A., Swinbank, J.D., Wijers, R.A.M.J., Wijnands, R., and Zarka, P.
- Abstract
Contains fulltext : 155764.pdf (preprint version ) (Open Access)
- Published
- 2016
303. LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole
- Author
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Stewart, A.J., Fender, R.P., Broderick, J.W., Hassall, T.E., Muñoz-Darias, T., Rowlinson, A., Swinbank, J.D., Staley, T.D., Molenaar, G.J., Scheers, B., Grobler, T.L., Pietka, M., Heald, G., McKean, J.P., Bell, M.E., Bonafede, A., Breton, R.P., Carbone, D., Cendes, Y., Clarke, A.O., Corbel, S., Gasperin, F. de, Eislöffel, J., Falcke, H., Ferrari, C., Grießmeier, J.-M., Hardcastle, M.J., Heesen, V., Hessels, J.W.T., Horneffer, A., Iacobelli, M., Jonker, P.G., Karastergiou, A., Kokotanekov, G., Kondratiev, V.I., Kuniyoshi, M., Law, C.J., Leeuwen, J. van, Markoff, S., Miller-Jones, J.C.A., Mulcahy, D., Orru, E., Pandey-Pommier, M., Pratley, L., Rol, E., Röttgering, H.J.A., Scaife, A.M.M., Shulevski, A., Sobey, C.A., Stappers, B.W., Tasse, C., Horst, A.J. van der, Velzen, S. van, Weeren, R.J. van, Wijers, R.A.M.J., Wijnands, R., Wise, M., Zarka, P., Alexov, A., Anderson, J., Asgekar, A., Avruch, I.M., Bentum, M.J., Bernardi, G., Best, P., Breitling, F., Brüggen, M., Butcher, H.R., Ciardi, B., Conway, J.E., Corstanje, A., Geus, A. de, Deller, A., Duscha, S., Frieswijk, W., Garrett, M.A., Gunst, A.W., Haarlem, M.P. van, Hoeft, M., Hörandel, J., Juette, E., Kuper, G., Loose, M., Maat, P., McFadden, R., McKay-Bukowski, D., Moldon, J., Munk, H., Norden, M.J., Paas, H., Polatidis, A.G., Schwarz, D., Sluman, J., Smirnov, O., Steinmetz, M., Thoudam, S., Toribio, M.C., Vermeulen, R., Vocks, C., Wijnholds, S.J., Wucknitz, O., Yatawatta, S., Stewart, A.J., Fender, R.P., Broderick, J.W., Hassall, T.E., Muñoz-Darias, T., Rowlinson, A., Swinbank, J.D., Staley, T.D., Molenaar, G.J., Scheers, B., Grobler, T.L., Pietka, M., Heald, G., McKean, J.P., Bell, M.E., Bonafede, A., Breton, R.P., Carbone, D., Cendes, Y., Clarke, A.O., Corbel, S., Gasperin, F. de, Eislöffel, J., Falcke, H., Ferrari, C., Grießmeier, J.-M., Hardcastle, M.J., Heesen, V., Hessels, J.W.T., Horneffer, A., Iacobelli, M., Jonker, P.G., Karastergiou, A., Kokotanekov, G., Kondratiev, V.I., Kuniyoshi, M., Law, C.J., Leeuwen, J. van, Markoff, S., Miller-Jones, J.C.A., Mulcahy, D., Orru, E., Pandey-Pommier, M., Pratley, L., Rol, E., Röttgering, H.J.A., Scaife, A.M.M., Shulevski, A., Sobey, C.A., Stappers, B.W., Tasse, C., Horst, A.J. van der, Velzen, S. van, Weeren, R.J. van, Wijers, R.A.M.J., Wijnands, R., Wise, M., Zarka, P., Alexov, A., Anderson, J., Asgekar, A., Avruch, I.M., Bentum, M.J., Bernardi, G., Best, P., Breitling, F., Brüggen, M., Butcher, H.R., Ciardi, B., Conway, J.E., Corstanje, A., Geus, A. de, Deller, A., Duscha, S., Frieswijk, W., Garrett, M.A., Gunst, A.W., Haarlem, M.P. van, Hoeft, M., Hörandel, J., Juette, E., Kuper, G., Loose, M., Maat, P., McFadden, R., McKay-Bukowski, D., Moldon, J., Munk, H., Norden, M.J., Paas, H., Polatidis, A.G., Schwarz, D., Sluman, J., Smirnov, O., Steinmetz, M., Thoudam, S., Toribio, M.C., Vermeulen, R., Vocks, C., Wijnholds, S.J., Wucknitz, O., and Yatawatta, S.
- Abstract
Contains fulltext : 155770.pdf (preprint version ) (Open Access)
- Published
- 2016
304. The reproducible radio outbursts of SS Cygni
- Author
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Russell, T.D., Miller-Jones, J.C.A., Sivakoff, G.R., Altamirano, D., O'Brien, T.J., Page, K.L., Templeton, M.R., Körding, E.G., Knigge, C., Rupen, M.P., Fender, R.P., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Remillard, R.A., Russell, D.M., Sarazin, C.L., Waagen, E.O., Russell, T.D., Miller-Jones, J.C.A., Sivakoff, G.R., Altamirano, D., O'Brien, T.J., Page, K.L., Templeton, M.R., Körding, E.G., Knigge, C., Rupen, M.P., Fender, R.P., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Remillard, R.A., Russell, D.M., Sarazin, C.L., and Waagen, E.O.
- Abstract
Contains fulltext : 159681.pdf (preprint version ) (Open Access)
- Published
- 2016
305. A LOFAR census of non-recycled pulsars: average profiles, dispersion measures, flux densities, and spectra⋆
- Author
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Bilous, A.V., Kondratiev, V.I., Kramer, M., Keane, E.F., Hessels, J.W.T., Stappers, B.W., Malofeev, V.M., Sobey, C, Breton, R.P., Cooper, S., Falcke, H., Karastergiou, A., Michilli, D., Osłowski, S., Sanidas, S., Veen, S. ter, Leeuwen, J. van, Verbiest, J.P.W., Weltevrede, P., Zarka, P., Grießmeier, J.-M., Serylak, M, Bell, M.E., Broderick, J.W., Eislöffel, J., Markoff, S., Rowlinson, A., Bilous, A.V., Kondratiev, V.I., Kramer, M., Keane, E.F., Hessels, J.W.T., Stappers, B.W., Malofeev, V.M., Sobey, C, Breton, R.P., Cooper, S., Falcke, H., Karastergiou, A., Michilli, D., Osłowski, S., Sanidas, S., Veen, S. ter, Leeuwen, J. van, Verbiest, J.P.W., Weltevrede, P., Zarka, P., Grießmeier, J.-M., Serylak, M, Bell, M.E., Broderick, J.W., Eislöffel, J., Markoff, S., and Rowlinson, A.
- Abstract
Contains fulltext : 159647.pdf (publisher's version ) (Open Access)
- Published
- 2016
306. Orbital and superorbital variability of LS I +61 303 at low radio frequencies with GMRT and LOFAR
- Author
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Marcote, B., Ribó, M., Paredes, J.M., Ishwara-Chandra, C.H., Swinbank, J.D., Broderick, J.W., Markoff, S., Fender, R., Wijers, R.A.M.J., Pooley, G.G., Stewart, A.J., Bell, M.E., Breton, R.P., Carbone, D., Corbel, S., Eislöffel, J., Falcke, H., Griesmeier, J.-M., Kuniyoshi, M., Pietka, M., Rowlinson, A., Serylak, M, Horst, A.J. van der, Leeuwen, J. van, Wise, M.W., Zarka, P., Marcote, B., Ribó, M., Paredes, J.M., Ishwara-Chandra, C.H., Swinbank, J.D., Broderick, J.W., Markoff, S., Fender, R., Wijers, R.A.M.J., Pooley, G.G., Stewart, A.J., Bell, M.E., Breton, R.P., Carbone, D., Corbel, S., Eislöffel, J., Falcke, H., Griesmeier, J.-M., Kuniyoshi, M., Pietka, M., Rowlinson, A., Serylak, M, Horst, A.J. van der, Leeuwen, J. van, Wise, M.W., and Zarka, P.
- Abstract
Contains fulltext : 155778.pdf (preprint version ) (Open Access)
- Published
- 2016
307. LOFAR imaging of Cygnus A – Direct detection of a turnover in the hotspot radio spectra
- Author
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McKean, J.P., Godfrey, L.E.H., Vegetti, S., Wise, M.W., Morganti, R., Hardcastle, M.J., Rafferty, D., Anderson, J., Avruch, I.M., Beck, R., Bell, M.E., Bemmel, I. van, Bentum, M.J., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J.W., Brüggen, M., Cerrigone, L., Ciardi, B., Gasperin, F. de, Deller, A., Duscha, S., Engels, D., Falcke, H., Fallows, R.A., Frieswijk, W., Garrett, M.A., Grießmeier, J.M., Haarlem, M.P. van, Heald, G., Hoeft, M., Horst, A.J. van der, Iacobelli, M., Intema, H., Juette, E., Karastergiou, A., Kondratiev, V.I., Koopmans, L.V.E., Kuniyoshi, M., Kuper, G., Leeuwen, J. van, Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Mulcahy, D.D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A.G., Reich, W., Röttgering, H.J.A., Rowlinson, A., Scaife, A.M.M., Serylak, M, Shulevski, A., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Thoudam, S., Toribio, M.C., Vermeulen, R., Vocks, C., Weeren, R.J. van, Wucknitz, O., Yatawatta, S., Zarka, P., McKean, J.P., Godfrey, L.E.H., Vegetti, S., Wise, M.W., Morganti, R., Hardcastle, M.J., Rafferty, D., Anderson, J., Avruch, I.M., Beck, R., Bell, M.E., Bemmel, I. van, Bentum, M.J., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J.W., Brüggen, M., Cerrigone, L., Ciardi, B., Gasperin, F. de, Deller, A., Duscha, S., Engels, D., Falcke, H., Fallows, R.A., Frieswijk, W., Garrett, M.A., Grießmeier, J.M., Haarlem, M.P. van, Heald, G., Hoeft, M., Horst, A.J. van der, Iacobelli, M., Intema, H., Juette, E., Karastergiou, A., Kondratiev, V.I., Koopmans, L.V.E., Kuniyoshi, M., Kuper, G., Leeuwen, J. van, Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Mulcahy, D.D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A.G., Reich, W., Röttgering, H.J.A., Rowlinson, A., Scaife, A.M.M., Serylak, M, Shulevski, A., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Thoudam, S., Toribio, M.C., Vermeulen, R., Vocks, C., Weeren, R.J. van, Wucknitz, O., Yatawatta, S., and Zarka, P.
- Abstract
Contains fulltext : 161143.pdf (preprint version ) (Open Access)
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- 2016
308. The 2015 Decay of the Black Hole X-ray Binary V404 Cygni: Robust Disk-Jet Coupling and a Sharp Transition into Quiescence
- Author
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Plotkin, R. M., Miller-Jones, J. C. A., Gallo, E., Jonker, P. G., Homan, J., Tomsick, J. A., Kaaret, P., Russell, D. M., Heinz, S., Hodges-Kluck, E. J., Markoff, S., Sivakoff, G. R., Altamirano, D., Neilsen, J., Plotkin, R. M., Miller-Jones, J. C. A., Gallo, E., Jonker, P. G., Homan, J., Tomsick, J. A., Kaaret, P., Russell, D. M., Heinz, S., Hodges-Kluck, E. J., Markoff, S., Sivakoff, G. R., Altamirano, D., and Neilsen, J.
- Abstract
We present simultaneous X-ray and radio observations of the black hole X-ray binary V404 Cygni at the end of its 2015 outburst. From 2015 July 11-August 5 we monitored V404 Cygni with Chandra, Swift, and NuSTAR in the X-ray, and with the Karl G. Jansky Very Large Array and the Very Long Baseline Array in the radio, spanning a range of luminosities that were poorly covered during its previous outburst in 1989 (our 2015 campaign covers 2e33
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- 2016
- Full Text
- View/download PDF
309. Mass-scaling as a method to constrain outflows and particle acceleration from low-luminosity accreting black holes
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Connors, R. M. T., Markoff, S., Nowak, M. A., Neilsen, J., Ceccobello, C., Crumley, P., Froning, C. S., Gallo, E., Nip, J. E., Connors, R. M. T., Markoff, S., Nowak, M. A., Neilsen, J., Ceccobello, C., Crumley, P., Froning, C. S., Gallo, E., and Nip, J. E.
- Abstract
The `fundamental plane of black hole accretion' (FP), a relation between the radio luminosities ($L_R$), X-ray luminosities ($L_X$), and masses ($M_{BH}$) of hard/quiescent state black hole binaries and low-luminosity active galactic nuclei, suggests some aspects of black hole accretion may be scale invariant. However, key questions still exist concerning the relationship between the inflow/outflow behaviour in the `classic' hard state and quiescence, which may impact this scaling. We show that the broadband spectra of A0620-00 and~\sgra~(the least luminous stellar mass/supermassive black holes on the FP) can be modelled simultaneously with a physically-motivated outflow-dominated model where the jet power and all distances are scaled by the black hole mass. We find we can explain the data of both A0620-00 and~\sgra~(in its non-thermal flaring state) in the context of two outflow-model scenarios: (1) a synchrotron-self-Compton dominated state in which the jet plasma reaches highly sub-equipartition conditions (for the magnetic field with respect to that of the radiating particles), and (2) a synchrotron dominated state in the fast-cooling regime in which particle acceleration occurs within the inner few gravitational radii of the black hole and plasma is close to equipartition. We show that it may be possible to further discriminate between models (1) and (2) through future monitoring of its submm/IR/X-ray emission, in particular via time lags between the variable emission in these bands., Comment: 19 pages (including appendix), 6 figures, 5 tables. Accepted for publication in MNRAS
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- 2016
- Full Text
- View/download PDF
310. Contributions of the Cherenkov Telescope Array (CTA) to the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016)
- Author
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Consortium, The CTA, Abchiche, A., Abeysekara, U., Abril, Ó., Acero, F., Acharya, B. S., Adams, C., Agnetta, G., Aharonian, F., Akhperjanian, A., Albert, A., Alcubierre, M., Alfaro, J., Alfaro, R., Allafort, A. J., Aloisio, R., Amans, J. -P., Amato, E., Ambrogi, L., Ambrosi, G., Ambrosio, M., Anderson, J., Anduze, M., Angüner, E. O., Antolini, E., Antonelli, L. A., Antonucci, M., Antonuccio, V., Antoranz, P., Aramo, C., Aravantinos, A., Araya, M., Arcaro, C., Arezki, B., Argan, A., Armstrong, T., Arqueros, F., Arrabito, L., Arrieta, M., Asano, K., Ashley, M., Aubert, P., Singh, C. B., Babic, A., Backes, M., Bais, A., Bajtlik, S., Balazs, C., Balbo, M., Balis, D., Balkowski, C., Ballester, O., Ballet, J., Balzer, A., Bamba, A., Bandiera, R., Barber, A., Barbier, C., Barcelo, M., Barkov, M., Barnacka, A., de Almeida, U. Barres, Barrio, J. A., Basso, S., Bastieri, D., Bauer, C., Becciani, U., Becherini, Y., Tjus, J. Becker, Beckmann, V., Bednarek, W., Benbow, W., Ventura, D. Benedico, Berdugo, J., Berge, D., Bernardini, E., Bernardini, M. G., Bernhard, S., Bernlöhr, K., Bertucci, B., Besel, M. -A., Beshley, V., Bhatt, N., Bhattacharjee, P., Bhattacharyya, W., Bhattachryya, S., Biasuzzi, B., Bicknell, G., Bigongiari, C., Biland, A., Bilinsky, A., Bilnik, W., Biondo, B., Bird, R., Bird, T., Bissaldi, E., Bitossi, M., Blanch, O., Blasi, P., Blazek, J., Bockermann, C., Boehm, C., Bogacz, L., Bogdan, M., Bohacova, M., Boisson, C., Boix, J., Bolmont, J., Bonanno, G., Bonardi, A., Bonavolontà, C., Bonifacio, P., Bonnarel, F., Bonnoli, G., Borkowski, J., Bose, R., Bosnjak, Z., Böttcher, M., Bousquet, J. -J., Boutonnet, C., Bouyjou, F., Bowman, L., Braiding, C., Brantseg, T., Brau-Nogué, S., Bregeon, J., Briggs, M., Brigida, M., Bringmann, T., Brisken, W., Bristow, D., Britto, R., Brocato, E., Bron, S., Brook, P., Brooks, W., Brown, A. M., Brügge, K., Brun, F., Brun, P., Brunetti, G., Brunetti, L., Bruno, P., Buanes, T., Bucciantini, N., Buchholtz, G., Buckley, J., Bugaev, V., Bühler, R., Bulgarelli, A., Bulik, T., Burton, M., Burtovoi, A., Busetto, G., Buson, S., Buss, J., Byrum, K., Cadoux, F., Tovar, J. Calvo, Cameron, R., Canelli, F., Canestrari, R., Capalbi, M., Capasso, M., Capobianco, G., Caproni, A., Caraveo, P., Cardenzana, J., Cardillo, M., Carius, S., Carlile, C., Carosi, A., Carosi, R., Carquín, E., Carr, J., Carroll, M., Carter, J., Carton, P. -H., Casandjian, J. -M., Casanova, S., Cascone, E., Casiraghi, M., Castellina, A., Mora, J. Castroviejo, Catalani, F., Catalano, O., Catalanotti, S., Cauz, D., Cavazzani, S., Cerchiara, P., Chabanne, E., Chadwick, P., Chaleil, T., Champion, C., Chatterjee, A., Chaty, S., Chaves, R., Chen, A., Chen, X., Cheng, K., Chernyakova, M., Chiappetti, L., Chikawa, M., Chinn, D., Chitnis, V. R., Cho, N., Christov, A., Chudoba, J., Cieślar, M., Ciocci, M. A., Clay, R., Colafrancesco, S., Colin, P., Colley, J. -M., Colombo, E., Colome, J., Colonges, S., Conforti, V., Connaughton, V., Connell, S., Conrad, J., Contreras, J. L., Coppi, P., Corbel, S., Coridian, J., Cornat, R., Corona, P., Corti, D., Cortina, J., Cossio, L., Costa, A., Costantini, H., Cotter, G., Courty, B., Covino, S., Covone, G., Crimi, G., Criswell, S. J., Crocker, R., Croston, J., Cuadra, J., Cumani, P., Cusumano, G., Da Vela, P., Dale, Ø., D'Ammando, F., Dang, D., Dang, V. T., Dangeon, L., Daniel, M., Davids, I., Dawson, B., Dazzi, F., Costa, B. de Aguiar, De Angelis, A., Cardoso, R. F. de Araujo, De Caprio, V., Anjos, R. de Cássia dos, De Cesare, G., De Franco, A., De Frondat, F., Pino, E. M. de Gouveia Dal, de la Calle, I., De Lisio, C., Lopez, R. de los Reyes, De Lotto, B., De Luca, A., Neto, J. R. T. de Mello, de Naurois, M., Wilhelmi, E. de Oña, De Palma, F., De Persio, F., de Souza, V., Decock, G., Decock, J., Deil, C., Del Santo, M., Delagnes, E., Deleglise, G., Delgado, C., Delgado, J., della Volpe, D., Deloye, P., Detournay, M., Dettlaff, A., Devin, J., Di Girolamo, T., Di Giulio, C., Di Paola, A., Di Pierro, F., Diaz, M. A., Díaz, C., Dib, C., Dick, J., Dickinson, H., Diebold, S., Digel, S., Dipold, J., Disset, G., Distefano, A., Djannati-Ataï, A., Doert, M., Dohmke, M., Domínguez, A., Dominik, N., Dominique, J. -L., Prester, D. Dominis, Donat, A., Donnarumma, I., Dorner, D., Doro, M., Dournaux, J. -L., Downes, T., Doyle, K., Drake, G., Drappeau, S., Drass, H., Dravins, D., Drury, L., Dubus, G., Ducci, L., Dumas, D., Morå, K. Dundas, Durand, D., D'Urso, D., Dwarkadas, V., Dyks, J., Dyrda, M., Ebr, J., Edy, E., Egberts, K., Eger, P., Egorov, A., Einecke, S., Eisch, J., Eisenkolb, F., Eleftheriadis, C., Elsaesser, D., Elsässer, D., Emmanoulopoulos, D., Engelbrecht, C., Engelhaupt, D., Ernenwein, J. -P., Escarate, P., Eschbach, S., Espinoza, C., Evans, P., Fairbairn, M., Falceta-Goncalves, D., Falcone, A., Ramazani, V. Fallah, Fantinel, D., Farakos, K., Farnier, C., Farrell, E., Fasola, G., Favre, Y., Fede, E., Fedora, R., Fedorova, E., Fegan, S., Ferenc, D., Fernandez-Alonso, M., Fernández-Barral, A., Ferrand, G., Ferreira, O., Fesquet, M., Fetfatzis, P., Fiandrini, E., Fiasson, A., Filipčič, A., Filipovic, M., Fink, D., Finley, C., Finley, J. P., Finoguenov, A., Fioretti, V., Fiorini, M., Fleischhack, H., Flores, H., Florin, D., Föhr, C., Fokitis, E., Fonseca, M. V., Font, L., Fontaine, G., Fontes, B., Fornasa, M., Förster, A., Fortin, P., Fortson, L., Fouque, N., Franckowiak, A., Franco, F. J., Albuquerque, I. Freire Mota, Coromina, L. Freixas, Fresnillo, L., Fruck, C., Fuessling, M., Fugazza, D., Fujita, Y., Fukami, S., Fukazawa, Y., Fukuda, T., Fukui, Y., Funk, S., Furniss, A., Gäbele, W., Gabici, S., Gadola, A., Galindo, D., Gall, D. D., Gallant, Y., Galloway, D., Gallozzi, S., Galvez, J. A., Gao, S., Garcia, A., Garcia, B., Gil, R. García, López, R. Garcia, Garczarczyk, M., Gardiol, D., Gargano, C., Gargano, F., Garozzo, S., Garrecht, F., Garrido, L., Garrido-Ruiz, M., Gascon, D., Gaskins, J., Gaudemard, J., Gaug, M., Gaweda, J., Gebhardt, B., Gebyehu, M., Geffroy, N., Genolini, B., Gerard, L., Ghalumyan, A., Ghedina, A., Ghislain, P., Giammaria, P., Giannakaki, E., Gianotti, F., Giarrusso, S., Giavitto, G., Giebels, B., Gieras, T., Giglietto, N., Gika, V., Gimenes, R., Giomi, M., Giommi, P., Giordano, F., Giovannini, G., Girardot, P., Giro, E., Giroletti, M., Gironnet, J., Giuliani, A., Glicenstein, J. -F., Gnatyk, R., Godinovic, N., Goldoni, P., Gomez, G., Gonzalez, M. M., González, A., Gora, D., Gothe, K. S., Gotz, D., Goullon, J., Grabarczyk, T., Graciani, R., Graham, J., Grandi, P., Granot, J., Grasseau, G., Gredig, R., Green, A. J., Green, A. 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Zanmar, Zaric, D., Zavrtanik, D., Zavrtanik, M., Zdziarski, A., Zech, A., Zechlin, H., Zhao, A., Zhdanov, V., Ziegler, A., Ziemann, J., Ziętara, K., Zink, A., Ziółkowski, J., Zitelli, V., Zoli, A., Zorn, J., and Żychowski, P.
- Abstract
List of contributions from the Cherenkov Telescope Array (CTA) Consortium presented at the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016), July 11-15, 2016, in Heidelberg, Germany., Comment: Index of CTA conference proceedings for the Gamma 2016, Heidelberg, Germany
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- 2016
311. The GCT camera for the Cherenkov Telescope Array
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Brown, Anthony M., Abchiche, A., Allan, D., Amans, J. P., Armstrong, T. P., Balzer, A., Berge, D., Boisson, C., Bousquet, J. -J., Bryan, M., Buchholtz, G., Chadwick, P. M., Costantini, H., Cotter, G., Daniel, M. K., De Franco, A., De Frondat, F., Dournaux, J. -L., Dumas, D., Fasola, G., Funk, S., Gironnet, J., Graham, J. A., Greenshaw, T., Hervet, O., Hidaka, N., Hinton, J. A., Huet, J. -M., Jegouzo, I., Jogler, T., Kraus, M., Lapington, J. S., Laporte, P., Lefaucheur, J., Markoff, S., Melse, T., Mohrmann, L., Molyneux, P., Nolan, S. J., Okumura, A., Osborne, J. P., Parsons, R. D., Rosen, S., Ross, D., Rowell, G., Sato, Y., Sayede, F., Schmoll, J., Schoorlemmer, H., Servillat, M., Sol, H., Stamatescu, V., Stephan, M., Stuik, R., Sykes, J., Tajima, H., Thornhill, J., Tibaldo, L., Trichard, C., Vink, J., Watson, J. J., White, R., Yamane, N., Zech, A., Zink, A., Zorn, J., Brown, Anthony M., Abchiche, A., Allan, D., Amans, J. P., Armstrong, T. P., Balzer, A., Berge, D., Boisson, C., Bousquet, J. -J., Bryan, M., Buchholtz, G., Chadwick, P. M., Costantini, H., Cotter, G., Daniel, M. K., De Franco, A., De Frondat, F., Dournaux, J. -L., Dumas, D., Fasola, G., Funk, S., Gironnet, J., Graham, J. A., Greenshaw, T., Hervet, O., Hidaka, N., Hinton, J. A., Huet, J. -M., Jegouzo, I., Jogler, T., Kraus, M., Lapington, J. S., Laporte, P., Lefaucheur, J., Markoff, S., Melse, T., Mohrmann, L., Molyneux, P., Nolan, S. J., Okumura, A., Osborne, J. P., Parsons, R. D., Rosen, S., Ross, D., Rowell, G., Sato, Y., Sayede, F., Schmoll, J., Schoorlemmer, H., Servillat, M., Sol, H., Stamatescu, V., Stephan, M., Stuik, R., Sykes, J., Tajima, H., Thornhill, J., Tibaldo, L., Trichard, C., Vink, J., Watson, J. J., White, R., Yamane, N., Zech, A., Zink, A., and Zorn, J.
- Abstract
The Gamma-ray Cherenkov Telescope (GCT) is proposed for the Small-Sized Telescope component of the Cherenkov Telescope Array (CTA). GCT's dual-mirror Schwarzschild-Couder (SC) optical system allows the use of a compact camera with small form-factor photosensors. The GCT camera is ~0.4 m in diameter and has 2048 pixels; each pixel has a ~0.2 degree angular size, resulting in a wide field-of-view. The design of the GCT camera is high performance at low cost, with the camera housing 32 front-end electronics modules providing full waveform information for all of the camera's 2048 pixels. The first GCT camera prototype, CHEC-M, was commissioned during 2015, culminating in the first Cherenkov images recorded by a SC telescope and the first light of a CTA prototype. In this contribution we give a detailed description of the GCT camera and present preliminary results from CHEC-M's commissioning., Comment: 8 pages, 6 figures, published in the proceedings of SPIE Astronomical Telescopes and Instrumentation, Edinburgh 2016
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- 2016
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312. The reproducible radio outbursts of SS Cygni
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Russell, T. D., Miller-Jones, J. C. A., Sivakoff, G. R., Altamirano, D., O'Brien, T. J., Page, K. L., Templeton, M. R., Koerding, E. G., Knigge, C., Rupen, M. P., Fender, R. P., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Remillard, R. A., Russell, D. M., Sarazin, C. L., Waagen, E. O., Russell, T. D., Miller-Jones, J. C. A., Sivakoff, G. R., Altamirano, D., O'Brien, T. J., Page, K. L., Templeton, M. R., Koerding, E. G., Knigge, C., Rupen, M. P., Fender, R. P., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Remillard, R. A., Russell, D. M., Sarazin, C. L., and Waagen, E. O.
- Abstract
We present the results of our intensive radio observing campaign of the dwarf nova SS Cyg during its 2010 April outburst. We argue that the observed radio emission was produced by synchrotron emission from a transient radio jet. Comparing the radio light curves from previous and subsequent outbursts of this system (including high-resolution observations from outbursts in 2011 and 2012) shows that the typical long and short outbursts of this system exhibit reproducible radio outbursts that do not vary significantly between outbursts, which is consistent with the similarity of the observed optical, ultraviolet and X-ray light curves. Contemporaneous optical and X-ray observations show that the radio emission appears to have been triggered at the same time as the initial X-ray flare, which occurs as disk material first reaches the boundary layer. This raises the possibility that the boundary region may be involved in jet production in accreting white dwarf systems. Our high spatial resolution monitoring shows that the compact jet remained active throughout the outburst with no radio quenching., Comment: 15 pages, 9 figures, Accepted for publication in MNRAS
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- 2016
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313. A LOFAR census of non-recycled pulsars: Average profiles, dispersion measures, flux densities, and spectra
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Bilous, AV, Kondratiev, VI, Kramer, M, Keane, EF, Hessels, JWT, Stappers, BW, Malofeev, VM, Sobey, C, Breton, RP, Cooper, S, Falcke, H, Karastergiou, A, Michilli, D, Osłowski, S, Sanidas, S, Ter Veen, S, Van Leeuwen, J, Verbiest, JPW, Weltevrede, P, Zarka, P, Grießmeier, JM, Serylak, M, Bell, ME, Broderick, JW, Eislöffel, J, Markoff, S, Rowlinson, A, Bilous, AV, Kondratiev, VI, Kramer, M, Keane, EF, Hessels, JWT, Stappers, BW, Malofeev, VM, Sobey, C, Breton, RP, Cooper, S, Falcke, H, Karastergiou, A, Michilli, D, Osłowski, S, Sanidas, S, Ter Veen, S, Van Leeuwen, J, Verbiest, JPW, Weltevrede, P, Zarka, P, Grießmeier, JM, Serylak, M, Bell, ME, Broderick, JW, Eislöffel, J, Markoff, S, and Rowlinson, A
- Abstract
© ESO 2016. We present first results from a LOFAR census of non-recycled pulsars. The census includes almost all such pulsars known (194 sources) at declinations Dec > 8 and Galactic latitudes jGbj > 3, regardless of their expected flux densities and scattering times. Each pulsar was observed for 20 min in the contiguous frequency range of 110-188 MHz. Full-Stokes data were recorded. We present the dispersion measures, flux densities, and calibrated total intensity profiles for the 158 pulsars detected in the sample. The median uncertainty in census dispersion measures (1:5 × 10-3 pc cm-3) is ten times smaller, on average, than in the ATNF pulsar catalogue. We combined census flux densities with those in the literature and fitted the resulting broadband spectra with single or broken power-law functions. For 48 census pulsars such fits are being published for the first time. Typically, the choice between single and broken power-laws, as well as the location of the spectral break, were highly influenced by the spectral coverage of the available flux density measurements. In particular, the inclusion of measurements below 100MHz appears essential for investigating the lowfrequency turnover in the spectra for most of the census pulsars. For several pulsars, we compared the spectral indices from different works and found the typical spread of values to be within 0.5-1.5, suggesting a prevailing underestimation of spectral index errors in the literature. The census observations yielded some unexpected individual source results, as we describe in the paper. Lastly, we will provide this unique sample of wide-band, low-frequency pulse profiles via the European Pulsar Network Database.
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- 2016
314. Wide-band, low-frequency pulse profiles of 100 radio pulsars with LOFAR
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Pilia, M., Hessels, J. W. T., Stappers, B. W., Kondratiev, V. I., Kramer, M., van Leeuwen, J., Weltevrede, P., Lyne, A. G., Zagkouris, K., Hassall, T. E., Bilous, A. V., Breton, R. P., Falcke, H., Grießmeier, J. -M, Keane, E., Karastergiou, A., Kuniyoshi, M., Noutsos, A., Os\lowski, S., Serylak, M., Sobey, C., ter Veen, S., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Bell, M. E., Bentum, M. J., Bernardi, G., Bîrzan, L., Bonafede, A., Breitling, F., Broderick, J. W., Brüggen, M., Ciardi, B., Corbel, S., de Geus, E., de Jong, A., Deller, A., Duscha, S., Eislöffel, J., Fallows, R. A., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., Gunst, A. W., Hamaker, J. P., Heald, G., Horneffer, A., Jonker, P., Juette, E., Kuper, G., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Miller-Jones, J. C. A., Nelles, A., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H., Rowlinson, A., Schwarz, D., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J. D., Tagger, M., Tang, Y., Tasse, C., Thoudam, Satyendra, Toribio, M. C., van der Horst, A. J., Vermeulen, R., Vocks, C., van Weeren, R. J., Wijers, R. A. M. J., Wijnands, R., Wijnholds, S. J., Wucknitz, O., Zarka, P., Pilia, M., Hessels, J. W. T., Stappers, B. W., Kondratiev, V. I., Kramer, M., van Leeuwen, J., Weltevrede, P., Lyne, A. G., Zagkouris, K., Hassall, T. E., Bilous, A. V., Breton, R. P., Falcke, H., Grießmeier, J. -M, Keane, E., Karastergiou, A., Kuniyoshi, M., Noutsos, A., Os\lowski, S., Serylak, M., Sobey, C., ter Veen, S., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Bell, M. E., Bentum, M. J., Bernardi, G., Bîrzan, L., Bonafede, A., Breitling, F., Broderick, J. W., Brüggen, M., Ciardi, B., Corbel, S., de Geus, E., de Jong, A., Deller, A., Duscha, S., Eislöffel, J., Fallows, R. A., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., Gunst, A. W., Hamaker, J. P., Heald, G., Horneffer, A., Jonker, P., Juette, E., Kuper, G., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Miller-Jones, J. C. A., Nelles, A., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H., Rowlinson, A., Schwarz, D., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J. D., Tagger, M., Tang, Y., Tasse, C., Thoudam, Satyendra, Toribio, M. C., van der Horst, A. J., Vermeulen, R., Vocks, C., van Weeren, R. J., Wijers, R. A. M. J., Wijnands, R., Wijnholds, S. J., Wucknitz, O., and Zarka, P.
- Abstract
Context. LOFAR offers the unique capability of observing pulsars across the 10−240 MHz frequency range with a fractional bandwidth of roughly 50%. This spectral range is well suited for studying the frequency evolution of pulse profile morphology caused by both intrinsic and extrinsic effects such as changing emission altitude in the pulsar magnetosphere or scatter broadening by the interstellar medium, respectively. Aims. The magnitude of most of these effects increases rapidly towards low frequencies. LOFAR can thus address a number of open questions about the nature of radio pulsar emission and its propagation through the interstellar medium. Methods. We present the average pulse profiles of 100 pulsars observed in the two LOFAR frequency bands: high band (120–167 MHz, 100 profiles) and low band (15–62 MHz, 26 profiles). We compare them with Westerbork Synthesis Radio Telescope (WSRT) and Lovell Telescope observations at higher frequencies (350 and 1400 MHz) to study the profile evolution. The profiles were aligned in absolute phase by folding with a new set of timing solutions from the Lovell Telescope, which we present along with precise dispersion measures obtained with LOFAR. Results. We find that the profile evolution with decreasing radio frequency does not follow a specific trend; depending on the geometry of the pulsar, new components can enter into or be hidden from view. Nonetheless, in general our observations confirm the widening of pulsar profiles at low frequencies, as expected from radius-to-frequency mapping or birefringence theories.
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- 2016
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315. A LOFAR census of millisecond pulsars
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Kondratiev, VI, Verbiest, JPW, Hessels, JWT, Bilous, AV, Stappers, BW, Kramer, M, Keane, EF, Noutsos, A, Osłowski, S, Breton, RP, Hassall, TE, Alexov, A, Cooper, S, Falcke, H, Grießmeier, JM, Karastergiou, A, Kuniyoshi, M, Pilia, M, Sobey, C, Ter Veen, S, Van Leeuwen, J, Weltevrede, P, Bell, ME, Broderick, JW, Corbel, S, Eisloffel, J, Markoff, S, Rowlinson, A, Swinbank, JD, Wijers, RAMJ, Wijnands, R, Zarka, P, Kondratiev, VI, Verbiest, JPW, Hessels, JWT, Bilous, AV, Stappers, BW, Kramer, M, Keane, EF, Noutsos, A, Osłowski, S, Breton, RP, Hassall, TE, Alexov, A, Cooper, S, Falcke, H, Grießmeier, JM, Karastergiou, A, Kuniyoshi, M, Pilia, M, Sobey, C, Ter Veen, S, Van Leeuwen, J, Weltevrede, P, Bell, ME, Broderick, JW, Corbel, S, Eisloffel, J, Markoff, S, Rowlinson, A, Swinbank, JD, Wijers, RAMJ, Wijnands, R, and Zarka, P
- Abstract
© 2016 ESO. We report the detection of 48 millisecond pulsars (MSPs) out of 75 observed thus far using the LOw-Frequency ARray (LOFAR) in the frequency range 110-188 MHz. We have also detected three MSPs out of nine observed in the frequency range 38-77 MHz. This is the largest sample of MSPs ever observed at these low frequencies, and half of the detected MSPs were observed for the first time atfrequencies below 200 MHz. We present the average pulse profiles of the detected MSPs, their effective pulse widths, and flux densities and compare these with higher observing frequencies. The flux-calibrated, multifrequency LOFAR pulse profiles are publicly available via the European Pulsar Network Database of Pulsar Profiles. We also present average values of dispersion measures (DM) and discuss DM and profile variations. About 35% of the MSPs show strong narrow profiles, another 25% exhibit scattered profiles, and the rest are only weakly detected. A qualitative comparison of the LOFAR MSP profiles with those at higher radio frequencies shows constant separation between profile components. Similarly, the profile widths are consistent with those observed at higher frequencies, unless scattering dominates at the lowest frequencies. This is very different from what is observed for normal pulsars and suggests a compact emission region in the MSP magnetosphere. The amplitude ratio of the profile components, on the other hand, can dramatically change towards low frequencies, often with the trailing component becoming dominant. As previously demonstrated this can be caused by aberration and retardation. This data set enables high-precision studies of pulse profile evolution with frequency, dispersion, Faraday rotation, and scattering in the interstellar medium. Characterising and correcting these systematic effects may improve pulsar-timing precision at higher observing frequencies, where pulsar timing array projects aim to directly detect gravitational waves.
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- 2016
316. A large light-mass component of cosmic rays at 1017-1017.5 electronvolts from radio observations
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Buitink, S, Corstanje, A, Falcke, H, Hörandel, JR, Huege, T, Nelles, A, Rachen, JP, Rossetto, L, Schellart, P, Scholten, O, Ter Veen, S, Thoudam, S, Trinh, TNG, Anderson, J, Asgekar, A, Avruch, IM, Bell, ME, Bentum, MJ, Bernardi, G, Best, P, Bonafede, A, Breitling, F, Broderick, JW, Brouw, WN, Brüggen, M, Butcher, HR, Carbone, D, Ciardi, B, Conway, JE, De Gasperin, F, De Geus, E, Deller, A, Dettmar, RJ, Van Diepen, G, Duscha, S, Eislöffel, J, Engels, D, Enriquez, JE, Fallows, RA, Fender, R, Ferrari, C, Frieswijk, W, Garrett, MA, Grießmeier, JM, Gunst, AW, Van Haarlem, MP, Hassall, TE, Heald, G, Hessels, JWT, Hoeft, M, Horneffer, A, Iacobelli, M, Intema, H, Juette, E, Karastergiou, A, Kondratiev, VI, Kramer, M, Kuniyoshi, M, Kuper, G, Van Leeuwen, J, Loose, GM, Maat, P, Mann, G, Markoff, S, McFadden, R, McKay-Bukowski, D, McKean, JP, Mevius, M, Mulcahy, DD, Munk, H, Norden, MJ, Orru, E, Paas, H, Pandey-Pommier, M, Pandey, VN, Pietka, M, Pizzo, R, Polatidis, AG, Reich, W, Röttgering, HJA, Scaife, AMM, Schwarz, DJ, Serylak, M, Sluman, J, Smirnov, O, Stappers, BW, Steinmetz, M, Stewart, A, Swinbank, J, Tagger, M, Tang, Y, Tasse, C, Toribio, MC, Vermeulen, R, Vocks, C, Vogt, C, Van Weeren, RJ, Wijers, RAMJ, Wijnholds, SJ, Wise, MW, Buitink, S, Corstanje, A, Falcke, H, Hörandel, JR, Huege, T, Nelles, A, Rachen, JP, Rossetto, L, Schellart, P, Scholten, O, Ter Veen, S, Thoudam, S, Trinh, TNG, Anderson, J, Asgekar, A, Avruch, IM, Bell, ME, Bentum, MJ, Bernardi, G, Best, P, Bonafede, A, Breitling, F, Broderick, JW, Brouw, WN, Brüggen, M, Butcher, HR, Carbone, D, Ciardi, B, Conway, JE, De Gasperin, F, De Geus, E, Deller, A, Dettmar, RJ, Van Diepen, G, Duscha, S, Eislöffel, J, Engels, D, Enriquez, JE, Fallows, RA, Fender, R, Ferrari, C, Frieswijk, W, Garrett, MA, Grießmeier, JM, Gunst, AW, Van Haarlem, MP, Hassall, TE, Heald, G, Hessels, JWT, Hoeft, M, Horneffer, A, Iacobelli, M, Intema, H, Juette, E, Karastergiou, A, Kondratiev, VI, Kramer, M, Kuniyoshi, M, Kuper, G, Van Leeuwen, J, Loose, GM, Maat, P, Mann, G, Markoff, S, McFadden, R, McKay-Bukowski, D, McKean, JP, Mevius, M, Mulcahy, DD, Munk, H, Norden, MJ, Orru, E, Paas, H, Pandey-Pommier, M, Pandey, VN, Pietka, M, Pizzo, R, Polatidis, AG, Reich, W, Röttgering, HJA, Scaife, AMM, Schwarz, DJ, Serylak, M, Sluman, J, Smirnov, O, Stappers, BW, Steinmetz, M, Stewart, A, Swinbank, J, Tagger, M, Tang, Y, Tasse, C, Toribio, MC, Vermeulen, R, Vocks, C, Vogt, C, Van Weeren, RJ, Wijers, RAMJ, Wijnholds, SJ, and Wise, MW
- Abstract
© 2016 Macmillan Publishers Limited. All rights reserved. Cosmic rays are the highest-energy particles found in nature. Measurements of the mass composition of cosmic rays with energies of 1017-1018 electronvolts are essential to understanding whether they have galactic or extragalactic sources. It has also been proposed that the astrophysical neutrino signal comes from accelerators capable of producing cosmic rays of these energies. Cosmic rays initiate air showers - cascades of secondary particles in the atmosphere - and their masses can be inferred from measurements of the atmospheric depth of the shower maximum (Xmax; the depth of the air shower when it contains the most particles) or of the composition of shower particles reaching the ground. Current measurements have either high uncertainty, or a low duty cycle and a high energy threshold. Radio detection of cosmic rays is a rapidly developing technique for determining Xmax (refs 10, 11) with a duty cycle of, in principle, nearly 100 per cent. The radiation is generated by the separation of relativistic electrons and positrons in the geomagnetic field and a negative charge excess in the shower front. Here we report radio measurements of Xmax with a mean uncertainty of 16 grams per square centimetre for air showers initiated by cosmic rays with energies of 1017-1017.5 electronvolts. This high resolution in Xmax enables us to determine the mass spectrum of the cosmic rays: we find a mixed composition, with a light-mass fraction (protons and helium nuclei) of about 80 per cent. Unless, contrary to current expectations, the extragalactic component of cosmic rays contributes substantially to the total flux below 1017.5 electronvolts, our measurements indicate the existence of an additional galactic component, to account for the light composition that we measured in the 1017-1017.5 electronvolt range.
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- 2016
317. LOFAR imaging of Cygnus A - direct detection of a turnover in the hotspot radio spectra
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McKean, J., Godfrey, L., Vegetti, S., Wise, M., Morganti, R., Hardcastle, M., Rafferty, D., Anderson, J., Avruch, I., Beck, R., Bell, M., van Bemmel, I., Bentum, M., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J., Brueggen, M., Cerrigone, L., Ciardi, B., de Gasperin, F., Deller, A., Duscha, S., Engels, D., Falcke, H., Fallows, R., Frieswijk, W., Garrett, M., Griessmeier, J., van Haarlem, M., Heald, G., Hoeft, M., van der Horst, A., Iacobelli, M., Intema, Hubertus, Juette, E., Karastergiou, A., Kondratiev, V., Koopmans, L., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Mulcahy, D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A., Reich, W., Rottgering, H., Rowlinson, A., Scaife, A., Serylak, M., Shulevski, A., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Thoudam, S., Toribio, M., Vermeulen, R., Vocks, C., van Weeren, R., Wucknitz, O., Yatawatta, S., Zarka, P., McKean, J., Godfrey, L., Vegetti, S., Wise, M., Morganti, R., Hardcastle, M., Rafferty, D., Anderson, J., Avruch, I., Beck, R., Bell, M., van Bemmel, I., Bentum, M., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J., Brueggen, M., Cerrigone, L., Ciardi, B., de Gasperin, F., Deller, A., Duscha, S., Engels, D., Falcke, H., Fallows, R., Frieswijk, W., Garrett, M., Griessmeier, J., van Haarlem, M., Heald, G., Hoeft, M., van der Horst, A., Iacobelli, M., Intema, Hubertus, Juette, E., Karastergiou, A., Kondratiev, V., Koopmans, L., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Mulcahy, D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A., Reich, W., Rottgering, H., Rowlinson, A., Scaife, A., Serylak, M., Shulevski, A., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Thoudam, S., Toribio, M., Vermeulen, R., Vocks, C., van Weeren, R., Wucknitz, O., Yatawatta, S., and Zarka, P.
- Abstract
The low-frequency radio spectra of the hotspots within powerful radio galaxies can provide valuable information about the physical processes operating at the site of the jet termination. These processes are responsible for the dissipation of jet kinetic energy, particle acceleration, and magnetic-field generation. Here, we report new observations of the powerful radio galaxy Cygnus A using the Low Frequency Array (LOFAR) between 109 and 183 MHz, at an angular resolution of ∼3.5 arcsec. The radio emission of the lobes is found to have a complex spectral index distribution, with a spectral steepening found towards the centre of the source. For the first time, a turnover in the radio spectrum of the two main hotspots of Cygnus A has been directly observed. By combining our LOFAR imaging with data from the Very Large Array at higher frequencies, we show that the very rapid turnover in the hotspot spectra cannot be explained by a low-energy cut-off in the electron energy distribution, as has been previously suggested. Thermal (free–free) absorption or synchrotron self-absorption models are able to describe the low-frequency spectral shape of the hotspots; however, as with previous studies, we find that the implied model parameters are unlikely, and interpreting the spectra of the hotspots remains problematic.
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- 2016
318. Corrigendum: A large light-mass component of cosmic rays at 1017-1017.5 electronvolts from radio observations
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Buitink, S., Corstanje, A., Falcke, H., Hörandel, J., Huege, T., Nelles, A., Rachen, J., Rossetto, L., Schellart, P., Scholten, O., Ter Veen, S., Thoudam, S., Trinh, T., Anderson, J., Asgekar, A., Avruch, I., Bell, M., Bentum, M., Bernardi, G., Best, P., Bonafede, A., Breitling, F., Broderick, J., Brouw, W., Brüggen, M., Butcher, H., Carbone, D., Ciardi, B., Conway, J., de Gasperin, F., de Geus, E., Deller, A., Dettmar, R., van Diepen, G., Duscha, S., Eislöffel, J., Engels, D., Enriquez, J., Fallows, R., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M., Grießmeier, J., Gunst, A., van Haarlem, M., Hassall, T., Heald, G., Hessels, J., Hoeft, M., Horneffer, A., Iacobelli, M., Intema, Hubertus, Juette, E., Karastergiou, A., Kondratiev, V., Kramer, M., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Loose, G., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., McKean, J., Mevius, M., Mulcahy, D., Munk, H., Norden, M., Orru, E., Paas, H., Pandey-Pommier, M., Pandey, V., Pietka, M., Pizzo, R., Polatidis, A., Reich, W., Röttgering, H., Scaife, A., Schwarz, D., Serylak, M., Sluman, J., Smirnov, O., Stappers, B., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., Toribio, M., Vermeulen, R., Vocks, C., Vogt, C., van Weeren, R., Wijers, R., Wijnholds, S., Wise, M., Wucknitz, O., Yatawatta, S., Zarka, P., Zensus, J., Buitink, S., Corstanje, A., Falcke, H., Hörandel, J., Huege, T., Nelles, A., Rachen, J., Rossetto, L., Schellart, P., Scholten, O., Ter Veen, S., Thoudam, S., Trinh, T., Anderson, J., Asgekar, A., Avruch, I., Bell, M., Bentum, M., Bernardi, G., Best, P., Bonafede, A., Breitling, F., Broderick, J., Brouw, W., Brüggen, M., Butcher, H., Carbone, D., Ciardi, B., Conway, J., de Gasperin, F., de Geus, E., Deller, A., Dettmar, R., van Diepen, G., Duscha, S., Eislöffel, J., Engels, D., Enriquez, J., Fallows, R., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M., Grießmeier, J., Gunst, A., van Haarlem, M., Hassall, T., Heald, G., Hessels, J., Hoeft, M., Horneffer, A., Iacobelli, M., Intema, Hubertus, Juette, E., Karastergiou, A., Kondratiev, V., Kramer, M., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Loose, G., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., McKean, J., Mevius, M., Mulcahy, D., Munk, H., Norden, M., Orru, E., Paas, H., Pandey-Pommier, M., Pandey, V., Pietka, M., Pizzo, R., Polatidis, A., Reich, W., Röttgering, H., Scaife, A., Schwarz, D., Serylak, M., Sluman, J., Smirnov, O., Stappers, B., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., Toribio, M., Vermeulen, R., Vocks, C., Vogt, C., van Weeren, R., Wijers, R., Wijnholds, S., Wise, M., Wucknitz, O., Yatawatta, S., Zarka, P., and Zensus, J.
- Abstract
In this Letter, we omitted to cite preliminary results from the low-energy extension of the Pierre Auger Observatory, as presented at the International Cosmic Ray Conference 2015 (ref. 1). Figure 1 of this Corrigendum shows measurements of the average value of Xmax for the Low Frequency Array (LOFAR), and earlier experiments using different techniques, now including the data from the Pierre Auger Observatory1, specifically the contribution of A. Porcelli. Our values are in agreement with those of ref. 1 within systematic uncertainties. - Nature 531, 70–73 (2016); doi:10.1038/nature16976
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- 2016
319. The reproducible radio outbursts of SS Cygni
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Russell, T., Miller-Jones, James, Sivakoff, G., Altamirano, D., O'Brien, T., Page, K., Templeton, M., Körding, E., Knigge, C., Rupen, M., Fender, R., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Remillard, R., Russell, D., Sarazin, C., Waagen, E., Russell, T., Miller-Jones, James, Sivakoff, G., Altamirano, D., O'Brien, T., Page, K., Templeton, M., Körding, E., Knigge, C., Rupen, M., Fender, R., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Remillard, R., Russell, D., Sarazin, C., and Waagen, E.
- Abstract
We present the results of our intensive radio observing campaign of the dwarf nova SS Cyg during its 2010 April outburst. We argue that the observed radio emission was produced by synchrotron emission from a transient radio jet. Comparing the radio light curves from previous and subsequent outbursts of this system (including high-resolution observations from outbursts in 2011 and 2012) shows that the typical long and short outbursts of this system exhibit reproducible radio outbursts that do not vary significantly between outbursts, which is consistent with the similarity of the observed optical, ultraviolet and X-ray light curves. Contemporaneous optical and X-ray observations show that the radio emission appears to have been triggered at the same time as the initial X-ray flare, which occurs as disc material first reaches the boundary layer. This raises the possibility that the boundary region may be involved in jet production in accreting white dwarf systems. Our high spatial resolution monitoring shows that the compact jet remained active throughout the outburst with no radio quenching.
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- 2016
320. The LOFT mission concept: a status update
- Author
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den Herder, Jan-Willem A., Takahashi, Tadayuki, Bautz, Marshall, Feroci, M., Bozzo, E., Brandt, Søren, Hernanz, M., van der Klis, M., Liu, L.-P., Orleanski, P., Pohl, M., Santangelo, A., Schanne, S., Stella, L., Takahashi, T., Tamura, H., Watts, A., Wilms, J., Zane, S., Bhattacharyya, S., Agudo, I., Ahangarianabhari, M., Albertus, C., Alford, M., Alpar, A., Altamirano, D., Alvarez, L., Amati, L., Amoros, C., Andersson, Niclas, Antonelli, A., Argan, A., Artigue, R., Artigues, B., Atteia, J.-L., Azzarello, P., Bakala, P., Ballantyne, D., Baldazzi, G., Baldo, M., Balman, S., Barbera, M., van Baren, C., Barret, D., Baykal, A., Begelman, M., Behar, O., Belloni, T., Bernardini, F., Bertuccio, G., Bianchi, S., Bianchini, A., Binko, P., Blay, P., Bocchino, F., Bode, M., Bodin, Peter, Bombaci, I., Bonnet Bidaud, J.-M., Boutloukos, S., Bouyjou, F., Bradley, L., Braga, J., Briggs, M. S., Brown, Elliot John, Buballa, M., Bucciantini, N., Burderi, L., Burgay, M., Bursa, M., Budtz-Jørgensen, Carl, Cackett, E., Cadoux, F., Cais, P., Caliandro, G. A., Campana, S., Cao, Xianyi, Capitanio, F., Casares, J., Casella, P., Castro-Tirado, A. J., Cavazzuti, E., Cavechi, Y., Celestin, S., Cerda-Duran, P., Chakrabarty, D., Chamel, N., Château, F., Chen, Y., Chenevez, Jérôme, Chernyakova, M., Coker, J., Cole, R., Collura, A., Coriat, M., Cornelisse, R., Costamante, L., Cros, A., Cui, W., Cumming, A., Cusumano, G., Czerny, B., D'Aì, A., D'Ammando, F., D'Elia, V., Dai, Zhuojun, Del Monte, E., De Luca, A., De Martino, D., Dercksen, J. P. C., De Pasquale, M., De Rosa, A., Del Santo, M., Di Cosimo, S., Degenaar, N., den Herder, J. W., Diebold, S., Di Salvo, T., Dong, Y., Donnarumma, I., Doroshenko, V., Doyle, G., Drake, S. A., Durant, M., Emmanoulopoulos, D., Enoto, T., Erkut, M. H., Esposito, P., Evangelista, Y., Fabian, A., Falanga, M., Favre, Y., Feldman, C., Fender, R., Feng, Huan, Ferrari, V., Ferrigno, C., Finger, M. H., Fraser, G. W., Frericks, M., Fullekrug, M., Fuschino, F., Gabler, M., Galloway, D. K., Gálvez Sanchez, J. L., Gandhi, P., Gao, Z., Garcia-Berro, E., Gendre, B., Gevin, O., Gezari, S., Giles, A. B., Gilfanov, M., Giommi, P., Giovannini, G., Giroletti, M., Gogus, E., Goldwurm, A., Goluchová, K., Götz, D., Gou, L., Gouiffes, C., Grandi, P., Grassi, M., Greiner, J., Grinberg, V., Groot, P., Gschwender, M., Gualtieri, L., Guedel, M., Guidorzi, C., Guy, L., Haas, D., Haensel, P., Hailey, M., Hamuguchi, K., Hansen, Flemming, Hartmann, D. H., Haswell, C. A., Hebeler, K., Heger, A., Hempel, M., Hermsen, W., Homan, J., Hornstrup, Allan, Hudec, R., Huovelin, J., Huppenkothen, D., Inam, S. C., Ingram, A., In't Zand, J. J. M., Israel, G., Iwasawa, K., Izzo, L., Jacobs, H. M., Jetter, F., Johannsen, T., Jenke, P. A., Jonker, P., Josè, J., Kaaret, P., Kalamkar, K., Kalemci, E., Kanbach, G., Karas, V., Karelin, D., Kataria, D., Keek, L., Kennedy, T., Klochkov, D., Kluzniak, W., Koerding, E., Kokkotas, K., Komossa, S., Korpela, S., Kouveliotou, C., Kowalski, A. F., Kreykenbohm, I., Kuiper, L. M., Kunneriath, D., Kurkela, A., Kuvvetli, Irfan, La Franca, F., Labanti, C., Lai, D., Lamb, F. K., Lachaud, C., Laubert, P. P., Lebrun, F., Li, X., Liang, E., Limousin, O., Lin, D., Linares, M., Linder, D., Lodato, G., Longo, F., Lu, F., Lund, Niels, Maccarone, T. J., Macera, D., Maestre, S., Mahmoodifar, S., Maier, D., Malcovati, P., Malzac, J., Malone, C., Mandel, I., Mangano, V., Manousakis, A., Marelli, M., Margueron, J., Marisaldi, M., Markoff, S. B., Markowitz, A., Marinucci, A., Martindale, A., Martínez, G., McHardy, I. M., Medina-Tanco, G., Mehdipour, M., Melatos, A., Mendez, M., Mereghetti, S., Migliari, S., Mignani, R., Michalska, M., Mihara, T., Miller, J. M., Mineo, T., Miniutti, G., Morsink, S., Motch, C., Motta, S., Mouchet, M., Mouret, G., Mulacova, Jana Hanis, Muleri, F., Muñoz-Darias, T., Negueruela, I., Neilsen, J., Neubert, Torsten, Norton, A. J., Nowak, M., Nucita, A., O'Brien, P., Oertel, M., Olsen, Poul Erik Holmdahl, Orienti, M., Orio, M., Orlandini, M., Osborne, J. P., Osten, R., Ozel, F., Pacciani, L., Paerels, F., Paltani, S., Paolillo, M., Papadakis, I., Papitto, A., Paragi, Z., Paredes, J. M., Patruno, A., Paul, B., Pederiva, F., Perinati, E., Pellizzoni, A., Penacchioni, A. V., Peretz, U., Perez, M. A., Perez-Torres, M., Peterson, B. M., Petracek, V., Pittori, C., Pons, J., Portell, J., Possenti, A., Postnov, K., Poutanen, J., Prakash, M., Prandoni, I., Le Provost, H., Psaltis, D., Pye, J., Qu, Jing, Rambaud, D., Ramon, P., Ramsay, G., Rapisarda, M., Rashevski, A., Rashevskaya, I., Ray, P. S., Rea, N., Reddy, S., Reig, P., Reina Aranda, M., Remillard, R., Reynolds, C., Rezzolla, L., Ribo, M., de la Rie, R., Riggio, A., Rios, A., Rischke, D. H., Rodríguez-Gil, P., Rodriguez, J., Rohlfs, R., Romano, P., Rossi, E. M. R., Rozanska, A., Rousseau, A., Rudak, B., Russell, D. M., Ryde, F., Sabau-Graziati, L., Sakamoto, T., Sala, G., Salvaterra, R., Salvetti, D., Sanna, A., Sandberg, J., Savolainen, T., Scaringi, S., Schaffner-Bielich, J., Schatz, H., Schee, J., Schmid, C., Serino, M., Shakura, N., Shore, S., Schnittman, J. D., Schneider, Raphael, Schwenk, A., Schwope, A. D., Sedrakian, A., Seyler, J.-Y., Shearer, A., Slowikowska, A., Sims, M., Smith, P. J., Sobolewska, M., Sochora, V., Soffitta, P., Soleri, P., Song, L., Spencer, A., Stamerra, A., Stappers, B., Staubert, R., Steiner, A. W., Stergioulas, N., Stevens, A. L., Stratta, G., Strohmayer, T. E., Stuchlik, Z., Suchy, S., Suleimanov, V., Tamburini, F., Tauris, T., Tavecchio, F., Tenzer, C., Thielemann, F. K., Tiengo, A., Tolos, L., Tombesi, F., Tomsick, J., Torok, G., Torrejon, J. M., Torres, D. F., Torresi, Elena, Tramacere, A., Traulsen, I., Trois, A., Turolla, R., Turriziani, S., Typel, S., Uter, P., Uttley, P., Vacchi, A., Varniere, P., Vaughan, S., Vercellone, S., Vietri, M., Vincent, F. H., Vrba, V., Walton, D., Wang, Z., Watanabe, Shigeki, Wawrzaszek, R., Webb, N., Weinberg, N., Wende, H., Wheatley, P., Wijers, R., Wijnands, R., Wille, Mads, Wilson-Hodge, C. A., Winter, B., Walk, S. J., Wood, K., Woosley, S. E., Wu, X., Xu, Ruichao, Yu, Wenye, Yuan, Y., Zampa, N., Zampieri, L., Zdunik, L., Zdziarski, A., Zech, A., Zhang, S., Zingale, M., Zwart, F., den Herder, Jan-Willem A., Takahashi, Tadayuki, Bautz, Marshall, Feroci, M., Bozzo, E., Brandt, Søren, Hernanz, M., van der Klis, M., Liu, L.-P., Orleanski, P., Pohl, M., Santangelo, A., Schanne, S., Stella, L., Takahashi, T., Tamura, H., Watts, A., Wilms, J., Zane, S., Bhattacharyya, S., Agudo, I., Ahangarianabhari, M., Albertus, C., Alford, M., Alpar, A., Altamirano, D., Alvarez, L., Amati, L., Amoros, C., Andersson, Niclas, Antonelli, A., Argan, A., Artigue, R., Artigues, B., Atteia, J.-L., Azzarello, P., Bakala, P., Ballantyne, D., Baldazzi, G., Baldo, M., Balman, S., Barbera, M., van Baren, C., Barret, D., Baykal, A., Begelman, M., Behar, O., Belloni, T., Bernardini, F., Bertuccio, G., Bianchi, S., Bianchini, A., Binko, P., Blay, P., Bocchino, F., Bode, M., Bodin, Peter, Bombaci, I., Bonnet Bidaud, J.-M., Boutloukos, S., Bouyjou, F., Bradley, L., Braga, J., Briggs, M. S., Brown, Elliot John, Buballa, M., Bucciantini, N., Burderi, L., Burgay, M., Bursa, M., Budtz-Jørgensen, Carl, Cackett, E., Cadoux, F., Cais, P., Caliandro, G. A., Campana, S., Cao, Xianyi, Capitanio, F., Casares, J., Casella, P., Castro-Tirado, A. J., Cavazzuti, E., Cavechi, Y., Celestin, S., Cerda-Duran, P., Chakrabarty, D., Chamel, N., Château, F., Chen, Y., Chenevez, Jérôme, Chernyakova, M., Coker, J., Cole, R., Collura, A., Coriat, M., Cornelisse, R., Costamante, L., Cros, A., Cui, W., Cumming, A., Cusumano, G., Czerny, B., D'Aì, A., D'Ammando, F., D'Elia, V., Dai, Zhuojun, Del Monte, E., De Luca, A., De Martino, D., Dercksen, J. P. C., De Pasquale, M., De Rosa, A., Del Santo, M., Di Cosimo, S., Degenaar, N., den Herder, J. W., Diebold, S., Di Salvo, T., Dong, Y., Donnarumma, I., Doroshenko, V., Doyle, G., Drake, S. A., Durant, M., Emmanoulopoulos, D., Enoto, T., Erkut, M. H., Esposito, P., Evangelista, Y., Fabian, A., Falanga, M., Favre, Y., Feldman, C., Fender, R., Feng, Huan, Ferrari, V., Ferrigno, C., Finger, M. H., Fraser, G. W., Frericks, M., Fullekrug, M., Fuschino, F., Gabler, M., Galloway, D. K., Gálvez Sanchez, J. L., Gandhi, P., Gao, Z., Garcia-Berro, E., Gendre, B., Gevin, O., Gezari, S., Giles, A. B., Gilfanov, M., Giommi, P., Giovannini, G., Giroletti, M., Gogus, E., Goldwurm, A., Goluchová, K., Götz, D., Gou, L., Gouiffes, C., Grandi, P., Grassi, M., Greiner, J., Grinberg, V., Groot, P., Gschwender, M., Gualtieri, L., Guedel, M., Guidorzi, C., Guy, L., Haas, D., Haensel, P., Hailey, M., Hamuguchi, K., Hansen, Flemming, Hartmann, D. H., Haswell, C. A., Hebeler, K., Heger, A., Hempel, M., Hermsen, W., Homan, J., Hornstrup, Allan, Hudec, R., Huovelin, J., Huppenkothen, D., Inam, S. C., Ingram, A., In't Zand, J. J. M., Israel, G., Iwasawa, K., Izzo, L., Jacobs, H. M., Jetter, F., Johannsen, T., Jenke, P. A., Jonker, P., Josè, J., Kaaret, P., Kalamkar, K., Kalemci, E., Kanbach, G., Karas, V., Karelin, D., Kataria, D., Keek, L., Kennedy, T., Klochkov, D., Kluzniak, W., Koerding, E., Kokkotas, K., Komossa, S., Korpela, S., Kouveliotou, C., Kowalski, A. F., Kreykenbohm, I., Kuiper, L. M., Kunneriath, D., Kurkela, A., Kuvvetli, Irfan, La Franca, F., Labanti, C., Lai, D., Lamb, F. K., Lachaud, C., Laubert, P. P., Lebrun, F., Li, X., Liang, E., Limousin, O., Lin, D., Linares, M., Linder, D., Lodato, G., Longo, F., Lu, F., Lund, Niels, Maccarone, T. J., Macera, D., Maestre, S., Mahmoodifar, S., Maier, D., Malcovati, P., Malzac, J., Malone, C., Mandel, I., Mangano, V., Manousakis, A., Marelli, M., Margueron, J., Marisaldi, M., Markoff, S. B., Markowitz, A., Marinucci, A., Martindale, A., Martínez, G., McHardy, I. M., Medina-Tanco, G., Mehdipour, M., Melatos, A., Mendez, M., Mereghetti, S., Migliari, S., Mignani, R., Michalska, M., Mihara, T., Miller, J. M., Mineo, T., Miniutti, G., Morsink, S., Motch, C., Motta, S., Mouchet, M., Mouret, G., Mulacova, Jana Hanis, Muleri, F., Muñoz-Darias, T., Negueruela, I., Neilsen, J., Neubert, Torsten, Norton, A. J., Nowak, M., Nucita, A., O'Brien, P., Oertel, M., Olsen, Poul Erik Holmdahl, Orienti, M., Orio, M., Orlandini, M., Osborne, J. P., Osten, R., Ozel, F., Pacciani, L., Paerels, F., Paltani, S., Paolillo, M., Papadakis, I., Papitto, A., Paragi, Z., Paredes, J. M., Patruno, A., Paul, B., Pederiva, F., Perinati, E., Pellizzoni, A., Penacchioni, A. V., Peretz, U., Perez, M. A., Perez-Torres, M., Peterson, B. M., Petracek, V., Pittori, C., Pons, J., Portell, J., Possenti, A., Postnov, K., Poutanen, J., Prakash, M., Prandoni, I., Le Provost, H., Psaltis, D., Pye, J., Qu, Jing, Rambaud, D., Ramon, P., Ramsay, G., Rapisarda, M., Rashevski, A., Rashevskaya, I., Ray, P. S., Rea, N., Reddy, S., Reig, P., Reina Aranda, M., Remillard, R., Reynolds, C., Rezzolla, L., Ribo, M., de la Rie, R., Riggio, A., Rios, A., Rischke, D. H., Rodríguez-Gil, P., Rodriguez, J., Rohlfs, R., Romano, P., Rossi, E. M. R., Rozanska, A., Rousseau, A., Rudak, B., Russell, D. M., Ryde, F., Sabau-Graziati, L., Sakamoto, T., Sala, G., Salvaterra, R., Salvetti, D., Sanna, A., Sandberg, J., Savolainen, T., Scaringi, S., Schaffner-Bielich, J., Schatz, H., Schee, J., Schmid, C., Serino, M., Shakura, N., Shore, S., Schnittman, J. D., Schneider, Raphael, Schwenk, A., Schwope, A. D., Sedrakian, A., Seyler, J.-Y., Shearer, A., Slowikowska, A., Sims, M., Smith, P. J., Sobolewska, M., Sochora, V., Soffitta, P., Soleri, P., Song, L., Spencer, A., Stamerra, A., Stappers, B., Staubert, R., Steiner, A. W., Stergioulas, N., Stevens, A. L., Stratta, G., Strohmayer, T. E., Stuchlik, Z., Suchy, S., Suleimanov, V., Tamburini, F., Tauris, T., Tavecchio, F., Tenzer, C., Thielemann, F. K., Tiengo, A., Tolos, L., Tombesi, F., Tomsick, J., Torok, G., Torrejon, J. M., Torres, D. F., Torresi, Elena, Tramacere, A., Traulsen, I., Trois, A., Turolla, R., Turriziani, S., Typel, S., Uter, P., Uttley, P., Vacchi, A., Varniere, P., Vaughan, S., Vercellone, S., Vietri, M., Vincent, F. H., Vrba, V., Walton, D., Wang, Z., Watanabe, Shigeki, Wawrzaszek, R., Webb, N., Weinberg, N., Wende, H., Wheatley, P., Wijers, R., Wijnands, R., Wille, Mads, Wilson-Hodge, C. A., Winter, B., Walk, S. J., Wood, K., Woosley, S. E., Wu, X., Xu, Ruichao, Yu, Wenye, Yuan, Y., Zampa, N., Zampieri, L., Zdunik, L., Zdziarski, A., Zech, A., Zhang, S., Zingale, M., and Zwart, F.
- Published
- 2016
321. A LOFAR census of millisecond pulsars
- Author
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Kondratiev, V., Verbiest, J., Hessels, J., Bilous, A., Stappers, B., Kramer, M., Keane, E., Noutsos, A., Oslowski, S., Breton, R., Hassall, T., Alexov, A., Cooper, S., Falcke, H., Grießmeier, J., Karastergiou, A., Kuniyoshi, M., Pilia, M., Sobey, Charlotte, Ter Veen, S., Van Leeuwen, J., Weltevrede, P., Bell, M., Broderick, J., Corbel, S., Eisloffel, J., Markoff, S., Rowlinson, A., Swinbank, J., Wijers, R., Wijnands, R., Zarka, P., Kondratiev, V., Verbiest, J., Hessels, J., Bilous, A., Stappers, B., Kramer, M., Keane, E., Noutsos, A., Oslowski, S., Breton, R., Hassall, T., Alexov, A., Cooper, S., Falcke, H., Grießmeier, J., Karastergiou, A., Kuniyoshi, M., Pilia, M., Sobey, Charlotte, Ter Veen, S., Van Leeuwen, J., Weltevrede, P., Bell, M., Broderick, J., Corbel, S., Eisloffel, J., Markoff, S., Rowlinson, A., Swinbank, J., Wijers, R., Wijnands, R., and Zarka, P.
- Abstract
We report the detection of 48 millisecond pulsars (MSPs) out of 75 observed thus far using the LOw-Frequency ARray (LOFAR) in the frequency range 110-188 MHz. We have also detected three MSPs out of nine observed in the frequency range 38-77 MHz. This is the largest sample of MSPs ever observed at these low frequencies, and half of the detected MSPs were observed for the first time atfrequencies below 200 MHz. We present the average pulse profiles of the detected MSPs, their effective pulse widths, and flux densities and compare these with higher observing frequencies. The flux-calibrated, multifrequency LOFAR pulse profiles are publicly available via the European Pulsar Network Database of Pulsar Profiles. We also present average values of dispersion measures (DM) and discuss DM and profile variations. About 35% of the MSPs show strong narrow profiles, another 25% exhibit scattered profiles, and the rest are only weakly detected. A qualitative comparison of the LOFAR MSP profiles with those at higher radio frequencies shows constant separation between profile components. Similarly, the profile widths are consistent with those observed at higher frequencies, unless scattering dominates at the lowest frequencies. This is very different from what is observed for normal pulsars and suggests a compact emission region in the MSP magnetosphere. The amplitude ratio of the profile components, on the other hand, can dramatically change towards low frequencies, often with the trailing component becoming dominant. As previously demonstrated this can be caused by aberration and retardation. This data set enables high-precision studies of pulse profile evolution with frequency, dispersion, Faraday rotation, and scattering in the interstellar medium. Characterising and correcting these systematic effects may improve pulsar-timing precision at higher observing frequencies, where pulsar timing array projects aim to directly detect gravitational waves.
- Published
- 2016
322. A LOFAR census of non-recycled pulsars: Average profiles, dispersion measures, flux densities, and spectra
- Author
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Bilous, A., Kondratiev, V., Kramer, M., Keane, E., Hessels, J., Stappers, B., Malofeev, V., Sobey, Charlotte, Breton, R., Cooper, S., Falcke, H., Karastergiou, A., Michilli, D., Oslowski, S., Sanidas, S., Ter Veen, S., Van Leeuwen, J., Verbiest, J., Weltevrede, P., Zarka, P., Grießmeier, J., Serylak, M., Bell, M., Broderick, J., Eislöffel, J., Markoff, S., Rowlinson, A., Bilous, A., Kondratiev, V., Kramer, M., Keane, E., Hessels, J., Stappers, B., Malofeev, V., Sobey, Charlotte, Breton, R., Cooper, S., Falcke, H., Karastergiou, A., Michilli, D., Oslowski, S., Sanidas, S., Ter Veen, S., Van Leeuwen, J., Verbiest, J., Weltevrede, P., Zarka, P., Grießmeier, J., Serylak, M., Bell, M., Broderick, J., Eislöffel, J., Markoff, S., and Rowlinson, A.
- Abstract
We present first results from a LOFAR census of non-recycled pulsars. The census includes almost all such pulsars known (194 sources) at declinations Dec > 8 and Galactic latitudes jGbj > 3, regardless of their expected flux densities and scattering times. Each pulsar was observed for 20 min in the contiguous frequency range of 110-188 MHz. Full-Stokes data were recorded. We present the dispersion measures, flux densities, and calibrated total intensity profiles for the 158 pulsars detected in the sample. The median uncertainty in census dispersion measures (1:5 × 10-3 pc cm-3) is ten times smaller, on average, than in the ATNF pulsar catalogue. We combined census flux densities with those in the literature and fitted the resulting broadband spectra with single or broken power-law functions. For 48 census pulsars such fits are being published for the first time. Typically, the choice between single and broken power-laws, as well as the location of the spectral break, were highly influenced by the spectral coverage of the available flux density measurements. In particular, the inclusion of measurements below 100MHz appears essential for investigating the lowfrequency turnover in the spectra for most of the census pulsars. For several pulsars, we compared the spectral indices from different works and found the typical spread of values to be within 0.5-1.5, suggesting a prevailing underestimation of spectral index errors in the literature. The census observations yielded some unexpected individual source results, as we describe in the paper. Lastly, we will provide this unique sample of wide-band, low-frequency pulse profiles via the European Pulsar Network Database.
- Published
- 2016
323. LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole
- Author
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Stewart, A., Fender, R., Broderick, J., Hassall, T., Muñoz-Darias, T., Rowlinson, A., Swinbank, J., Staley, T., Molenaar, G., Scheers, B., Grobler, T., Pietka, M., Heald, G., McKean, J., Bell, M., Bonafede, A., Breton, R., Carbone, D., Cendes, Y., Clarke, A., Corbel, S., de Gasperin, F., Eisloeffel, J., Falcke, H., Ferrari, C., Griemeier, J., Hardcastle, M., Heesen, V., Hessels, J., Horneffer, A., Iacobelli, M., Jonker, P., Karastergiou, A., Kokotanekov, G., Kondratiev, V., Kuniyoshi, M., Law, C., van Leeuwen, J., Markoff, S., Miller-Jones, J., Mulcahy, D., Orru, E., Pandey-Pommier, M., Pratley, L., Rol, E., Rottgering, H., Scaife, A., Shulevski, A., Sobey, Charlotte, Stappers, B., Tasse, C., van der Horst, A., van Velzen, S., van Weeren, R., Wijers, R., Wijnands, R., Wise, M., Zarka, P., Alexov, A., Anderson, J., Asgekar, A., Avruch, I., Bentum, M., Bernardi, G., Best, P., Breitling, F., Bruggen, M., Butcher, H., Ciardi, B., Conway, J., Corstanje, A., de Geus, E., Deller, A., Duscha, S., Frieswijk, W., Garrett, M., Gunst, A., van Haarlem, M., Hoeft, M., Horandel, J., Juette, E., Kuper, G., Loose, M., Maat, P., McFadden, R., McKay-Bukowski, D., Moldon, J., Munk, H., Norden, M., Paas, H., Polatidis, A., Schwarz, D., Sluman, J., Smirnov, O., Steinmetz, M., Thoudam, S., Toribio, M., Vermeulen, R., Vocks, C., Wijnholds, S., Wucknitz, O., Yatawatta, S., Stewart, A., Fender, R., Broderick, J., Hassall, T., Muñoz-Darias, T., Rowlinson, A., Swinbank, J., Staley, T., Molenaar, G., Scheers, B., Grobler, T., Pietka, M., Heald, G., McKean, J., Bell, M., Bonafede, A., Breton, R., Carbone, D., Cendes, Y., Clarke, A., Corbel, S., de Gasperin, F., Eisloeffel, J., Falcke, H., Ferrari, C., Griemeier, J., Hardcastle, M., Heesen, V., Hessels, J., Horneffer, A., Iacobelli, M., Jonker, P., Karastergiou, A., Kokotanekov, G., Kondratiev, V., Kuniyoshi, M., Law, C., van Leeuwen, J., Markoff, S., Miller-Jones, J., Mulcahy, D., Orru, E., Pandey-Pommier, M., Pratley, L., Rol, E., Rottgering, H., Scaife, A., Shulevski, A., Sobey, Charlotte, Stappers, B., Tasse, C., van der Horst, A., van Velzen, S., van Weeren, R., Wijers, R., Wijnands, R., Wise, M., Zarka, P., Alexov, A., Anderson, J., Asgekar, A., Avruch, I., Bentum, M., Bernardi, G., Best, P., Breitling, F., Bruggen, M., Butcher, H., Ciardi, B., Conway, J., Corstanje, A., de Geus, E., Deller, A., Duscha, S., Frieswijk, W., Garrett, M., Gunst, A., van Haarlem, M., Hoeft, M., Horandel, J., Juette, E., Kuper, G., Loose, M., Maat, P., McFadden, R., McKay-Bukowski, D., Moldon, J., Munk, H., Norden, M., Paas, H., Polatidis, A., Schwarz, D., Sluman, J., Smirnov, O., Steinmetz, M., Thoudam, S., Toribio, M., Vermeulen, R., Vocks, C., Wijnholds, S., Wucknitz, O., and Yatawatta, S.
- Abstract
We present the results of a four-month campaign searching for low-frequency radio transients near the North Celestial Pole with the Low-Frequency Array (LOFAR), as part of the Multifrequency Snapshot Sky Survey (MSSS). The data were recorded between 2011 December and 2012 April and comprised 2149 11-min snapshots, each covering 175 deg2. We have found one convincing candidate astrophysical transient, with a duration of a few minutes and a flux density at 60 MHz of 15–25 Jy. The transient does not repeat and has no obvious optical or high-energy counterpart, as a result of which its nature is unclear. The detection of this event implies a transient rate at 60 MHz of 3.9+14.7−3.7×10−4 d−1 deg−2, and a transient surface density of 1.5 × 10−5 deg−2, at a 7.9-Jy limiting flux density and ∼10-min time-scale. The campaign data were also searched for transients at a range of other time-scales, from 0.5 to 297 min, which allowed us to place a range of limits on transient rates at 60 MHz as a function of observation duration.
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- 2016
324. LOFAR Observations of Swift J1644+57 and Implications for Short-Duration Transients
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Cendes, Y., Ralph Wijers, Swinbank, J. D., Rowlinson, A., Horst, A. J., Carbone, D., Broderick, J. W., Staley, T. D., Stewart, A. J., Molenaar, G., Huizinga, F., Alexov, A., Bell, M. E., Coenen, T., Corbel, S., Eislöffel, J., Fender, R., Grießmeier, J., Hessel, J., Jonker, P., Kramer, M., Kuniyoshi, M., Law, C. J., Markoff, S., Pietka, M., Stappers, B., Wise, M., and Zarka, P.
- Subjects
High Energy Astrophysical Phenomena (astro-ph.HE) ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Aims: We have analyzed low frequency radio data of tidal disruption event (TDE) Swift J1644+57 to search for a counterpart. We consider how brief transient signals (on the order of seconds or minutes) originating from this location would appear in our data. We also consider how automatic radio frequency interference (RFI) flagging at radio telescope observatories might affect these and other transient observations in the future, particularly with brief transients of a few seconds duration. Methods: We observed the field in the low-frequency regime at 149 MHz with data obtained over several months with the Low Frequency Array (LOFAR). We also present simulations where a brief transient is injected into the data in order to see how it would appear in our measurement sets, and how it would be affected by RFI flagging. Finally, both based on simulation work and the weighted average of the observed background over the course of the individual observations, we present the possibility of brief radio transients in the data. Results: Our observations of Swift J1644+57 yielded no detection of the source and a peak flux density at this position of 24.7 $\pm$ 8.9 mJy. Our upper limit on the transient rate of the snapshot surface density in this field at sensitivities < 0.5 Jy is $��< 2.2 \times10^{-2}$ deg$^{-2}$. We also conclude that we did not observe any brief transient signals originating specifically from the Swift J1644+57 source itself, and searches for such transients are severely limited by automatic RFI flagging algorithms which flag transients of less than 2 minutes duration. As such, careful consideration of RFI flagging techniques must occur when searching for transient signals., 7 pages, 8 figures
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- 2014
325. Future mmVLBI Research with ALMA: A European vision
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Tilanus, R. P. J., Krichbaum, T. P., Zensus, J. A., Baudry, Alain, Vlemmings, W., Abraham, Z., Afonso, J., Agudo, I., Alberdi, A., Alcolea, J., Altamirano, D., Asadi, S., Assaf, K., Augusto, P., Baczko, A-K., Boeck, M., Boller, T., Bondi, M., Boone, F., Bourda, G., Brajsa, R., Brand, J., Britzen, S., Bujarrabal, V., Cales, S., Casadio, C., Casasola, V., Castangia, P., Cernicharo, J., Charlot, P., Chemin, L., Clenet, Y., Colomer, F., Combes, F., Cordes, J., Coriat, M., Cross, N., D'Ammando, F., Dallacasa, D., Desmurs, J-F., Eatough, R., Eckart, A., Eisenacher, D., Etoka, S., Felix, M., Fender, R., Ferreira, M., Freeland, E., Frey, S., Fromm, C., Fuhrmann, L., Gabanyi, K., Galvan-Madrid, R., Giroletti, M., Goddi, C., Gomez, J., Gourgoulhon, E., Gray, M., Di Gregorio, I., Greimel, R., Grosso, N., Guirado, J., Hada, K., Hanslmeier, A., Henkel, C., Herpin, Fabrice, Hess, P., Hodgson, J., Horns, D., Humphreys, E., Kramer, B. Hutawarakorn, Ilyushin, V., Impellizzeri, V., Ivanov, V., Julião, M., Kadler, M., Kerins, E., Klaassen, P., Klooster, K. Van 'T, Kording, E., Kozlov, M., Kramer, M., Kreikenbohm, A., Kurtanidze, O., Lazio, J., Leite, A., Leitzinger, M., Lepine, J., Levshakov, S., Lico, R., Lindqvist, M., Liuzzo, E., Lobanov, A., Lucas, Philippe, Mannheim, K., Marcaide, J., Markoff, S., Martí-Vidal, I., Martins, C., Masetti, N., Massardi, M., Menten, K., Messias, H., Migliari, S., Mignano, A., Miller-Jones, J., Minniti, D., Molaro, P., Molina, S., Monteiro, A., Moscadelli, L., Mueller, C., Müller, A., Muller, S., Niederhofer, F., Odert, P., Olofsson, H., Orienti, M., Paladino, R., Panessa, F., Paragi, Z., Paumard, T., Pedrosa, P., Pérez-Torres, M., Perrin, G., Perucho, M., Porquet, D., Prandoni, I., Ransom, S., Reimers, D., Rejkuba, M., Rezzolla, L., Richards, A., Ros, E., Roy, A., Rushton, A., Savolainen, T., Schulz, R., Silva, M., Sivakoff, G., Soria-Ruiz, R., Soria, R., Spaans, M., Spencer, R., Stappers, B., Surcis, G., Tarchi, A., Temmer, M., Thompson, M., Torrelles, J., Truestedt, J., Tudose, V., Venturi, T., Verbiest, J., Vieira, J., Vielzeuf, P., Vincent, F., Wex, N., Wiik, K., Wiklind, T., Wilms, J., Zackrisson, E., Zechlin, H., Bremer, M., Bremer, Michael, Falcke, H., FORMATION STELLAIRE 2014, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), AUTRES, M2A 2014, Ctr Astrobiol CSIC INTA, Lab Astrofis Mol, Madrid 28850, Spain, Ctr Astrobiol CSIC INTA, Lab Astrofis Mol, Madrid, SSE 2014, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Radioastronomie (MPIFR), Centro de Biologia Molecular e Ambiental (CBMA), Universidade do Minho, Max-Planck-Institut für Extraterrestrische Physik (MPE), Observatoire astronomique de Strasbourg (ObAS), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut für Physik (Institut für Physik), Universität Potsdam, National Center for Atmospheric Research [Boulder] (NCAR), Institute for Geophysics, Astrophysics and Meteorology [Graz] (IGAM), Karl-Franzens-Universität Graz, OncoRay - National Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus, TU Dresden, Space Research Institute of Austrian Academy of Sciences (IWF), Austrian Academy of Sciences (OeAW), Onsala Space Observatory (OSO), Chalmers University of Technology [Göteborg], DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Milieux aquatiques, écologie et pollutions (UR MALY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), University of Utrecht, Utrecht University [Utrecht], Departamento de Química, Universidade de Coimbra [Coimbra], Kapteyn Astronomical Institute [Groningen], University of Groningen [Groningen], GoLP/Instituto Plasmas e Fusa˜o Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), ONERA - The French Aerospace Lab [Toulouse], ONERA, Onsala Space Observatory, Institut de RadioAstronomie Millimétrique (IRAM), Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Centro de Astrobiologia [Madrid] (CAB), Instituto Nacional de Técnica Aeroespacial (INTA)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Universidade do Minho = University of Minho [Braga], and University of Potsdam = Universität Potsdam
- Subjects
[PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM] ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Instrumentation and Methods for Astrophysics ,Instrumentation and Methods for Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Astrophysics::Galaxy Astrophysics ,[SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM] - Abstract
Very long baseline interferometry at millimetre/submillimetre wavelengths (mmVLBI) offers the highest achievable spatial resolution at any wavelength in astronomy. The anticipated inclusion of ALMA as a phased array into a global VLBI network will bring unprecedented sensitivity and a transformational leap in capabilities for mmVLBI. Building on years of pioneering efforts in the US and Europe the ongoing ALMA Phasing Project (APP), a US-led international collaboration with MPIfR-led European contributions, is expected to deliver a beamformer and VLBI capability to ALMA by the end of 2014 (APP: Fish et al. 2013, arXiv:1309.3519). This report focuses on the future use of mmVLBI by the international users community from a European viewpoint. Firstly, it highlights the intense science interest in Europe in future mmVLBI observations as compiled from the responses to a general call to the European community for future research projects. A wide range of research is presented that includes, amongst others: - Imaging the event horizon of the black hole at the centre of the Galaxy - Testing the theory of General Relativity an/or searching for alternative theories - Studying the origin of AGN jets and jet formation - Cosmological evolution of galaxies and BHs, AGN feedback - Masers in the Milky Way (in stars and star-forming regions) - Extragalactic emission lines and astro-chemistry - Redshifted absorption lines in distant galaxies and study of the ISM and circumnuclear gas - Pulsars, neutron stars, X-ray binaries - Testing cosmology - Testing fundamental physical constants
- Published
- 2014
326. Black Hole Jets at the Lowest Luminosities
- Author
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Plotkin, R.M., Gallo, E., Jonker, P.G., Markoff, S., Homan, J., Miler-Jones, J., Russell, D.M., and Drappeau, S.
- Subjects
Astronomy - Abstract
Item does not contain fulltext High Energy Astrophysics Division, 14th Meeting Chicago, Illinois, 17-21 August 2014
- Published
- 2014
327. Mass-scaling as a method to constrain outflows and particle acceleration from low-luminosity accreting black holes
- Author
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Connors, R. M. T., primary, Markoff, S., additional, Nowak, M. A., additional, Neilsen, J., additional, Ceccobello, C., additional, Crumley, P., additional, Froning, C. S., additional, Gallo, E., additional, and Nip, J. E., additional
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- 2016
- Full Text
- View/download PDF
328. XIPE: the x-ray imaging polarimetry explorer
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Soffitta, Paolo, primary, Bellazzini, Ronaldo, additional, Bozzo, Enrico, additional, Burwitz, Vadim, additional, Castro Tirado, Alberto, additional, Costa, Enrico, additional, Courvoisier, Thierry, additional, Feng, Hua, additional, Gburek, Szymon, additional, Goosmann, Rene', additional, Karas, Vladimir, additional, Matt, Giorgio, additional, Muleri, Fabio, additional, Nandra, Kirpal, additional, Pearce, Mark, additional, Poutanen, Juri, additional, Reglero, Victor, additional, Graziati, Maria Dolores, additional, Santangelo, Andrea, additional, Tagliaferri, Gianpiero, additional, Tenzer, Christopher, additional, Vink, Jacco, additional, Weisskopf, Martin, additional, Zane, Silvia, additional, Agudo, I., additional, Antonelli, A., additional, Attina, P., additional, Baldini, L., additional, Bykov, A., additional, Carpentiero, R., additional, Cavazzuti, E., additional, Churazov, E., additional, Del Monte, E., additional, De Martino, D., additional, Donnarumma, I., additional, Doroshenko, V., additional, Evangelista, Y., additional, Ferreira, I., additional, Gallo, E., additional, Grosso, N., additional, Kaaret, P., additional, Kuulkers, E., additional, Laranaga, J., additional, Latronico, L., additional, Lumb, D. H., additional, Macian, J., additional, Malzac, J., additional, Marin, F., additional, Massaro, E., additional, Minuti, M., additional, Mundell, C., additional, Ness, J. U., additional, Oosterbroek, T., additional, Paltani, S., additional, Pareschi, G., additional, Perna, R., additional, Petrucci, P.-O., additional, Pinazo, H. B., additional, Pinchera, M., additional, Rodriguez, J. P., additional, Roncadelli, M., additional, Santovincenzo, A., additional, Sazonov, S., additional, Sgro, C., additional, Spiga, D., additional, Svoboda, J., additional, Theobald, C., additional, Theodorou, T., additional, Turolla, R., additional, Wilhelmi de Ona, E., additional, Winter, B., additional, Akbar, A. M., additional, Allan, H., additional, Aloisio, R., additional, Altamirano, D., additional, Amati, L., additional, Amato, E., additional, Angelakis, E., additional, Arezu, J., additional, Atteia, J.-L., additional, Axelsson, M., additional, Bachetti, M., additional, Ballo, L., additional, Balman, S., additional, Bandiera, R., additional, Barcons, X., additional, Basso, S., additional, Baykal, A., additional, Becker, W., additional, Behar, E., additional, Beheshtipour, B., additional, Belmont, R., additional, Berger, E., additional, Bernardini, F., additional, Bianchi, S., additional, Bisnovatyi-Kogan, G., additional, Blasi, P., additional, Blay, P., additional, Bodaghee, A., additional, Boer, M., additional, Boettcher, M., additional, Bogdanov, S., additional, Bombaci, I., additional, Bonino, R., additional, Braga, J., additional, Brandt, W., additional, Brez, A., additional, Bucciantini, N., additional, Burderi, L., additional, Caiazzo, I., additional, Campana, R., additional, Campana, S., additional, Capitanio, F., additional, Cappi, M., additional, Cardillo, M., additional, Casella, P., additional, Catmabacak, O., additional, Cenko, B., additional, Cerda-Duran, P., additional, Cerruti, C., additional, Chaty, S., additional, Chauvin, M., additional, Chen, Y., additional, Chenevez, J., additional, Chernyakova, M., additional, Cheung, C. C. T., additional, Christodoulou, D., additional, Connell, P., additional, Corbet, R., additional, Coti Zelati, F., additional, Covino, S., additional, Cui, W., additional, Cusumano, G., additional, D’Ai, A., additional, D’Ammando, F., additional, Dadina, M., additional, Dai, Z., additional, De Rosa, A., additional, de Ruvo, L., additional, Degenaar, N., additional, Del Santo, M., additional, Del Zanna, L., additional, Dewangan, G., additional, Di Cosimo, S., additional, Di Lalla, N., additional, Di Persio, G., additional, Di Salvo, T., additional, Dias, T., additional, Done, C., additional, Dovciak, M., additional, Doyle, G., additional, Ducci, L., additional, Elsner, R., additional, Enoto, T., additional, Escada, J., additional, Esposito, P., additional, Eyles, C., additional, Fabiani, S., additional, Falanga, M., additional, Falocco, S., additional, Fan, Y., additional, Fender, R., additional, Feroci, M., additional, Ferrigno, C., additional, Forman, W., additional, Foschini, L., additional, Fragile, C., additional, Fuerst, F., additional, Fujita, Y., additional, Gasent-Blesa, J. L., additional, Gelfand, J., additional, Gendre, B., additional, Ghirlanda, G., additional, Ghisellini, G., additional, Giroletti, M., additional, Goetz, D., additional, Gogus, E., additional, Gomez, J.-L., additional, Gonzalez, D., additional, Gonzalez-Riestra, R., additional, Gotthelf, E., additional, Gou, L., additional, Grandi, P., additional, Grinberg, V., additional, Grise, F., additional, Guidorzi, C., additional, Gurlebeck, N., additional, Guver, T., additional, Haggard, D., additional, Hardcastle, M., additional, Hartmann, D., additional, Haswell, C., additional, Heger, A., additional, Hernanz, M., additional, Heyl, J., additional, Ho, L., additional, Hoormann, J., additional, Horak, J., additional, Huovelin, J., additional, Huppenkothen, D., additional, Iaria, R., additional, Inam Sitki, C., additional, Ingram, A., additional, Israel, G., additional, Izzo, L., additional, Burgess, M., additional, Jackson, M., additional, Ji, L., additional, Jiang, J., additional, Johannsen, T., additional, Jones, C., additional, Jorstad, S., additional, Kajava, J. J. E., additional, Kalamkar, M., additional, Kalemci, E., additional, Kallman, T., additional, Kamble, A., additional, Kislat, F., additional, Kiss, M., additional, Klochkov, D., additional, Koerding, E., additional, Kolehmainen, M., additional, Koljonen, K., additional, Komossa, S., additional, Kong, A., additional, Korpela, S., additional, Kowalinski, M., additional, Krawczynski, H., additional, Kreykenbohm, I., additional, Kuss, M., additional, Lai, D., additional, Lan, M., additional, Larsson, J., additional, Laycock, S., additional, Lazzati, D., additional, Leahy, D., additional, Li, H., additional, Li, J., additional, Li, L., additional, Li, T., additional, Li, Z., additional, Linares, M., additional, Lister, M., additional, Liu, H., additional, Lodato, G., additional, Lohfink, A., additional, Longo, F., additional, Luna, G., additional, Lutovinov, A., additional, Mahmoodifar, S., additional, Maia, J., additional, Mainieri, V., additional, Maitra, C., additional, Maitra, D., additional, Majczyna, A., additional, Maldera, S., additional, Malyshev, D., additional, Manfreda, A., additional, Manousakis, A., additional, Manuel, R., additional, Margutti, R., additional, Marinucci, A., additional, Markoff, S., additional, Marscher, A., additional, Marshall, H., additional, Massaro, F., additional, McLaughlin, M., additional, Medina-Tanco, G., additional, Mehdipour, M., additional, Middleton, M., additional, Mignani, R., additional, Mimica, P., additional, Mineo, T., additional, Mingo, B., additional, Miniutti, G., additional, Mirac, S. M., additional, Morlino, G., additional, Motlagh, A. V., additional, Motta, S., additional, Mushtukov, A., additional, Nagataki, S., additional, Nardini, F., additional, Nattila, J., additional, Navarro, G. J., additional, Negri, B., additional, Negro, Matteo, additional, Nenonen, S., additional, Neustroev, V., additional, Nicastro, F., additional, Norton, A., additional, Nucita, A., additional, O’Brien, P., additional, O’Dell, S., additional, and Turriziani, S., additional
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- 2016
- Full Text
- View/download PDF
329. Elusive Accretion Discs in Low Luminosity AGN
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Fernández-Ontiveros, J.A., primary, Escudero, M.A. Prieto, additional, Markoff, S., additional, Reb, L., additional, Espada, D., additional, and González-Martín, O., additional
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- 2016
- Full Text
- View/download PDF
330. LOFAR imaging of Cygnus A – direct detection of a turnover in the hotspot radio spectra
- Author
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McKean, J. P., primary, Godfrey, L. E. H., additional, Vegetti, S., additional, Wise, M. W., additional, Morganti, R., additional, Hardcastle, M. J., additional, Rafferty, D., additional, Anderson, J., additional, Avruch, I. M., additional, Beck, R., additional, Bell, M. E., additional, van Bemmel, I., additional, Bentum, M. J., additional, Bernardi, G., additional, Best, P., additional, Blaauw, R., additional, Bonafede, A., additional, Breitling, F., additional, Broderick, J. W., additional, Brüggen, M., additional, Cerrigone, L., additional, Ciardi, B., additional, de Gasperin, F., additional, Deller, A., additional, Duscha, S., additional, Engels, D., additional, Falcke, H., additional, Fallows, R. A., additional, Frieswijk, W., additional, Garrett, M. A., additional, Grießmeier, J. M., additional, van Haarlem, M. P., additional, Heald, G., additional, Hoeft, M., additional, Horst, A. J. van der, additional, Iacobelli, M., additional, Intema, H., additional, Juette, E., additional, Karastergiou, A., additional, Kondratiev, V. I., additional, Koopmans, L. V. E., additional, Kuniyoshi, M., additional, Kuper, G., additional, van Leeuwen, J., additional, Maat, P., additional, Mann, G., additional, Markoff, S., additional, McFadden, R., additional, McKay-Bukowski, D., additional, Mulcahy, D. D., additional, Munk, H., additional, Nelles, A., additional, Orru, E., additional, Paas, H., additional, Pandey-Pommier, M., additional, Pietka, M., additional, Pizzo, R., additional, Polatidis, A. G., additional, Reich, W., additional, Röttgering, H. J. A., additional, Rowlinson, A., additional, Scaife, A. M. M., additional, Serylak, M., additional, Shulevski, A., additional, Sluman, J., additional, Smirnov, O., additional, Steinmetz, M., additional, Stewart, A., additional, Swinbank, J., additional, Tagger, M., additional, Thoudam, S., additional, Toribio, M. C., additional, Vermeulen, R., additional, Vocks, C., additional, van Weeren, R. J., additional, Wucknitz, O., additional, Yatawatta, S., additional, and Zarka, P., additional
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- 2016
- Full Text
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331. The Cherenkov Telescope Array Observatory: top level use cases
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Bulgarelli, A., additional, Kosack, K., additional, Hinton, J., additional, Tosti, G., additional, Schwanke, U., additional, Schwarz, J., additional, Colomé, P., additional, Conforti, V., additional, Khelifi, B., additional, Goullon, J., additional, Ong, R., additional, Markoff, S., additional, Contreras, J. L., additional, Lucarelli, F., additional, Antonelli, L. A., additional, Bigongiari, C., additional, Boisson, C., additional, Bosnjak, Z., additional, Brau-Nogué, S., additional, Carosi, A., additional, Chen, A., additional, Cotter, G., additional, Covino, S., additional, Daniel, M., additional, De Cesare, G., additional, de Ona Wilhelmi, E., additional, Della Volpe, M., additional, Di Pierro, F., additional, Fioretti, V., additional, Füßling, M., additional, Garczarczyk, M., additional, Gaug, M., additional, Glicenstein, J. F., additional, Goldoni, P., additional, Götz, D., additional, Grandi, P., additional, Heller, M., additional, Hermann, G., additional, Inoue, S., additional, Knödlseder, J., additional, Lenain, J.-P., additional, Lindfors, E., additional, Lombardi, S., additional, Luque-Escamilla, P., additional, Maier, G., additional, Marisaldi, M., additional, Mundell, C., additional, Neyroud, N., additional, Noda, K., additional, O'Brien, P., additional, Petrucci, P. O., additional, Martí Ribas, J., additional, Ribó, M., additional, Rodriguez, J., additional, Romano, P., additional, Schmid, J., additional, Serre, N., additional, Sol, H., additional, Schussler, F., additional, Stamerra, A., additional, Stolarczyk, T., additional, Vandenbrouck, J., additional, Vercellone, S., additional, Vergani, S., additional, Zech, A., additional, and Zoli, A., additional
- Published
- 2016
- Full Text
- View/download PDF
332. The Gamma-ray Cherenkov Telescope, an end-to end Schwarzschild-Couder telescope prototype proposed for the Cherenkov Telescope Array
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Dournaux, J. L., additional, Abchiche, A., additional, Allan, D., additional, Amans, J. P., additional, Armstrong, T. P., additional, Balzer, A., additional, Berge, D., additional, Boisson, C., additional, Bousquet, J.-J., additional, Brown, A. M., additional, Bryan, M., additional, Buchholtz, G., additional, Chadwick, P. M., additional, Costantini, H., additional, Cotter, G., additional, Dangeon, L., additional, Daniel, M. K., additional, De Franco, A., additional, De Frondat, F., additional, Dumas, D., additional, Ernenwein, J. P., additional, Fasola, G., additional, Funk, S., additional, Gironnet, J., additional, Graham, J. A., additional, Greenshaw, T., additional, Hameau, B., additional, Hervet, O., additional, Hidaka, N., additional, Hinton, J.A., additional, Huet, J.M., additional, Jégouzo, I., additional, Jogler, T., additional, Kawashima, T., additional, Kraush, M., additional, Lapington, J. S., additional, Laporte, P., additional, Lefaucheur, J., additional, Markoff, S., additional, Melse, T., additional, Mohrmann, L., additional, Molyneux, P., additional, Nolan, S. J., additional, Okumura, A., additional, Osborne, J. P., additional, Parsons, R. D., additional, Rosen, S., additional, Ross, D., additional, Rowell, G., additional, Rulten, C. B., additional, Sato, Y., additional, Sayède, F., additional, Schmoll, J., additional, Schoorlemmer, H., additional, Servillat, M., additional, Sol, H., additional, Stamatescu, V., additional, Stephan, M., additional, Stuik, R., additional, Sykes, J., additional, Tajima, H., additional, Thornhill, J., additional, Tibaldo, L., additional, Trichard, C., additional, Vink, J., additional, Watson, J. J., additional, White, R., additional, Yamane, N., additional, Zech, A., additional, and Zink, A., additional
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- 2016
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333. The GCT camera for the Cherenkov Telescope Array
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Brown, A. M., additional, Abchiche, A., additional, Allan, D., additional, Amans, J.-P., additional, Armstrong, T. P., additional, Balzer, A., additional, Berge, D., additional, Boisson, C., additional, Bousquet, J.-J., additional, Bryan, M., additional, Buchholtz, G., additional, Chadwick, P. M., additional, Costantini, H., additional, Cotter, G., additional, Daniel, M. K., additional, De Franco, A., additional, de Frondat, F., additional, Dournaux, J.-L., additional, Dumas, D., additional, Fasola, G, additional, Funk, S., additional, Gironnet, J., additional, Graham, J. A., additional, Greenshaw, T., additional, Hervet, O., additional, Hidaka, N., additional, Hinton, J. A., additional, Huet, J.-M., additional, Jégouzo, I., additional, Jogler, T., additional, Kraus, M., additional, Lapington, J. S., additional, Laporte, P., additional, Lefaucheur, J., additional, Markoff, S., additional, Melse, T., additional, Mohrmann, L., additional, Molyneux, P., additional, Nolan, S. J., additional, Okumura, A., additional, Osborne, J. P., additional, Parsons, R. D., additional, Rosen, S., additional, Ross, D., additional, Rowell, G., additional, Sato, Y., additional, Sayede, F., additional, Schmoll, J., additional, Schoorlemmer, H., additional, Servillat, M., additional, Sol, H., additional, Stamatescu, V., additional, Stephan, M., additional, Stuik, R., additional, Sykes, J., additional, Tajima, H., additional, Thornhill, J., additional, Tibaldo, L., additional, Trichard, C., additional, Vink, J., additional, Watson, J. J., additional, White, R., additional, Yamane, N., additional, Zech, A., additional, Zink, A., additional, and Zorn, J., additional
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- 2016
- Full Text
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334. Correction: Corrigendum: A large light-mass component of cosmic rays at 1017–1017.5 electronvolts from radio observations
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Buitink, S., primary, Corstanje, A., additional, Falcke, H., additional, Hörandel, J. R., additional, Huege, T., additional, Nelles, A., additional, Rachen, J. P., additional, Rossetto, L., additional, Schellart, P., additional, Scholten, O., additional, ter Veen, S., additional, Thoudam, S., additional, Trinh, T. N. G., additional, Anderson, J., additional, Asgekar, A., additional, Avruch, I. M., additional, Bell, M. E., additional, Bentum, M. J., additional, Bernardi, G., additional, Best, P., additional, Bonafede, A., additional, Breitling, F., additional, Broderick, J. W., additional, Brouw, W. N., additional, Brüggen, M., additional, Butcher, H. R., additional, Carbone, D., additional, Ciardi, B., additional, Conway, J. E., additional, de Gasperin, F., additional, de Geus, E., additional, Deller, A., additional, Dettmar, R.-J., additional, van Diepen, G., additional, Duscha, S., additional, Eislöffel, J., additional, Engels, D., additional, Enriquez, J. E., additional, Fallows, R. A., additional, Fender, R., additional, Ferrari, C., additional, Frieswijk, W., additional, Garrett, M. A., additional, Grießmeier, J. M., additional, Gunst, A. W., additional, van Haarlem, M. P., additional, Hassall, T. E., additional, Heald, G., additional, Hessels, J. W. T., additional, Hoeft, M., additional, Horneffer, A., additional, Iacobelli, M., additional, Intema, H., additional, Juette, E., additional, Karastergiou, A., additional, Kondratiev, V. I., additional, Kramer, M., additional, Kuniyoshi, M., additional, Kuper, G., additional, van Leeuwen, J., additional, Loose, G. M., additional, Maat, P., additional, Mann, G., additional, Markoff, S., additional, McFadden, R., additional, McKay-Bukowski, D., additional, McKean, J. P., additional, Mevius, M., additional, Mulcahy, D. D., additional, Munk, H., additional, Norden, M. J., additional, Orru, E., additional, Paas, H., additional, Pandey-Pommier, M., additional, Pandey, V. N., additional, Pietka, M., additional, Pizzo, R., additional, Polatidis, A. G., additional, Reich, W., additional, Röttgering, H. J. A., additional, Scaife, A. M. M., additional, Schwarz, D. J., additional, Serylak, M., additional, Sluman, J., additional, Smirnov, O., additional, Stappers, B. W., additional, Steinmetz, M., additional, Stewart, A., additional, Swinbank, J., additional, Tagger, M., additional, Tang, Y., additional, Tasse, C., additional, Toribio, M. C., additional, Vermeulen, R., additional, Vocks, C., additional, Vogt, C., additional, van Weeren, R. J., additional, Wijers, R. A. M. J., additional, Wijnholds, S. J., additional, Wise, M. W., additional, Wucknitz, O., additional, Yatawatta, S., additional, Zarka, P., additional, and Zensus, J. A., additional
- Published
- 2016
- Full Text
- View/download PDF
335. A LOFAR census of non-recycled pulsars: average profiles, dispersion measures, flux densities, and spectra
- Author
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Bilous, A. V., primary, Kondratiev, V. I., additional, Kramer, M., additional, Keane, E. F., additional, Hessels, J. W. T., additional, Stappers, B. W., additional, Malofeev, V. M., additional, Sobey, C., additional, Breton, R. P., additional, Cooper, S., additional, Falcke, H., additional, Karastergiou, A., additional, Michilli, D., additional, Osłowski, S., additional, Sanidas, S., additional, ter Veen, S., additional, van Leeuwen, J., additional, Verbiest, J. P. W., additional, Weltevrede, P., additional, Zarka, P., additional, Grießmeier, J.-M., additional, Serylak, M., additional, Bell, M. E., additional, Broderick, J. W., additional, Eislöffel, J., additional, Markoff, S., additional, and Rowlinson, A., additional
- Published
- 2016
- Full Text
- View/download PDF
336. Using infrared/X-ray flare statistics to probe the emission regions near the event horizon of Sgr A*
- Author
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Dibi, S., primary, Markoff, S., additional, Belmont, R., additional, Malzac, J., additional, Neilsen, J., additional, and Witzel, G., additional
- Published
- 2016
- Full Text
- View/download PDF
337. The reproducible radio outbursts of SS Cygni
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Russell, T. D., primary, Miller-Jones, J. C. A., additional, Sivakoff, G. R., additional, Altamirano, D., additional, O'Brien, T. J., additional, Page, K. L., additional, Templeton, M. R., additional, Körding, E. G., additional, Knigge, C., additional, Rupen, M. P., additional, Fender, R. P., additional, Heinz, S., additional, Maitra, D., additional, Markoff, S., additional, Migliari, S., additional, Remillard, R. A., additional, Russell, D. M., additional, Sarazin, C. L., additional, and Waagen, E. O., additional
- Published
- 2016
- Full Text
- View/download PDF
338. Swift J1644+57: an ideal test bed of radiation mechanisms in a relativistic super-Eddington jet
- Author
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Crumley, P., primary, Lu, W., additional, Santana, R., additional, Hernández, R. A., additional, Kumar, P., additional, and Markoff, S., additional
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- 2016
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- View/download PDF
339. Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR
- Author
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Broderick, J. W., primary, Fender, R. P., additional, Breton, R. P., additional, Stewart, A. J., additional, Rowlinson, A., additional, Swinbank, J. D., additional, Hessels, J. W. T., additional, Staley, T. D., additional, van der Horst, A. J., additional, Bell, M. E., additional, Carbone, D., additional, Cendes, Y., additional, Corbel, S., additional, Eislöffel, J., additional, Falcke, H., additional, Grießmeier, J.-M., additional, Hassall, T. E., additional, Jonker, P., additional, Kramer, M., additional, Kuniyoshi, M., additional, Law, C. J., additional, Markoff, S., additional, Molenaar, G. J., additional, Pietka, M., additional, Scheers, L. H. A., additional, Serylak, M., additional, Stappers, B. W., additional, ter Veen, S., additional, van Leeuwen, J., additional, Wijers, R. A. M. J., additional, Wijnands, R., additional, Wise, M. W., additional, and Zarka, P., additional
- Published
- 2016
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- View/download PDF
340. A large light-mass component of cosmic rays at 1017–1017.5 electronvolts from radio observations
- Author
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Buitink, S., primary, Corstanje, A., additional, Falcke, H., additional, Hörandel, J. R., additional, Huege, T., additional, Nelles, A., additional, Rachen, J. P., additional, Rossetto, L., additional, Schellart, P., additional, Scholten, O., additional, ter Veen, S., additional, Thoudam, S., additional, Trinh, T. N. G., additional, Anderson, J., additional, Asgekar, A., additional, Avruch, I. M., additional, Bell, M. E., additional, Bentum, M. J., additional, Bernardi, G., additional, Best, P., additional, Bonafede, A., additional, Breitling, F., additional, Broderick, J. W., additional, Brouw, W. N., additional, Brüggen, M., additional, Butcher, H. R., additional, Carbone, D., additional, Ciardi, B., additional, Conway, J. E., additional, de Gasperin, F., additional, de Geus, E., additional, Deller, A., additional, Dettmar, R.-J., additional, van Diepen, G., additional, Duscha, S., additional, Eislöffel, J., additional, Engels, D., additional, Enriquez, J. E., additional, Fallows, R. A., additional, Fender, R., additional, Ferrari, C., additional, Frieswijk, W., additional, Garrett, M. A., additional, Grießmeier, J. M., additional, Gunst, A. W., additional, van Haarlem, M. P., additional, Hassall, T. E., additional, Heald, G., additional, Hessels, J. W. T., additional, Hoeft, M., additional, Horneffer, A., additional, Iacobelli, M., additional, Intema, H., additional, Juette, E., additional, Karastergiou, A., additional, Kondratiev, V. I., additional, Kramer, M., additional, Kuniyoshi, M., additional, Kuper, G., additional, van Leeuwen, J., additional, Loose, G. M., additional, Maat, P., additional, Mann, G., additional, Markoff, S., additional, McFadden, R., additional, McKay-Bukowski, D., additional, McKean, J. P., additional, Mevius, M., additional, Mulcahy, D. D., additional, Munk, H., additional, Norden, M. J., additional, Orru, E., additional, Paas, H., additional, Pandey-Pommier, M., additional, Pandey, V. N., additional, Pietka, M., additional, Pizzo, R., additional, Polatidis, A. G., additional, Reich, W., additional, Röttgering, H. J. A., additional, Scaife, A. M. M., additional, Schwarz, D. J., additional, Serylak, M., additional, Sluman, J., additional, Smirnov, O., additional, Stappers, B. W., additional, Steinmetz, M., additional, Stewart, A., additional, Swinbank, J., additional, Tagger, M., additional, Tang, Y., additional, Tasse, C., additional, Toribio, M. C., additional, Vermeulen, R., additional, Vocks, C., additional, Vogt, C., additional, van Weeren, R. J., additional, Wijers, R. A. M. J., additional, Wijnholds, S. J., additional, Wise, M. W., additional, Wucknitz, O., additional, Yatawatta, S., additional, Zarka, P., additional, and Zensus, J. A., additional
- Published
- 2016
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- View/download PDF
341. The central parsecs of M87: jet emission and an elusive accretion disc
- Author
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Prieto, M. A., primary, Fernández-Ontiveros, J. A., additional, Markoff, S., additional, Espada, D., additional, and González-Martín, O., additional
- Published
- 2016
- Full Text
- View/download PDF
342. Imaging Jupiter’s radiation belts down to 127 MHz with LOFAR
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Girard, J. N., primary, Zarka, P., additional, Tasse, C., additional, Hess, S., additional, de Pater, I., additional, Santos-Costa, D., additional, Nenon, Q., additional, Sicard, A., additional, Bourdarie, S., additional, Anderson, J., additional, Asgekar, A., additional, Bell, M. E., additional, van Bemmel, I., additional, Bentum, M. J., additional, Bernardi, G., additional, Best, P., additional, Bonafede, A., additional, Breitling, F., additional, Breton, R. P., additional, Broderick, J. W., additional, Brouw, W. N., additional, Brüggen, M., additional, Ciardi, B., additional, Corbel, S., additional, Corstanje, A., additional, de Gasperin, F., additional, de Geus, E., additional, Deller, A., additional, Duscha, S., additional, Eislöffel, J., additional, Falcke, H., additional, Frieswijk, W., additional, Garrett, M. A., additional, Grießmeier, J., additional, Gunst, A. W., additional, Hessels, J. W. T., additional, Hoeft, M., additional, Hörandel, J., additional, Iacobelli, M., additional, Juette, E., additional, Kondratiev, V. I., additional, Kuniyoshi, M., additional, Kuper, G., additional, van Leeuwen, J., additional, Loose, M., additional, Maat, P., additional, Mann, G., additional, Markoff, S., additional, McFadden, R., additional, McKay-Bukowski, D., additional, Moldon, J., additional, Munk, H., additional, Nelles, A., additional, Norden, M. J., additional, Orru, E., additional, Paas, H., additional, Pandey-Pommier, M., additional, Pizzo, R., additional, Polatidis, A. G., additional, Reich, W., additional, Röttgering, H., additional, Rowlinson, A., additional, Schwarz, D., additional, Smirnov, O., additional, Steinmetz, M., additional, Swinbank, J., additional, Tagger, M., additional, Thoudam, S., additional, Toribio, M. C., additional, Vermeulen, R., additional, Vocks, C., additional, van Weeren, R. J., additional, Wijers, R. A. M. J., additional, and Wucknitz, O., additional
- Published
- 2016
- Full Text
- View/download PDF
343. Wide-band, low-frequency pulse profiles of 100 radio pulsars with LOFAR
- Author
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Pilia, M., primary, Hessels, J. W. T., additional, Stappers, B. W., additional, Kondratiev, V. I., additional, Kramer, M., additional, van Leeuwen, J., additional, Weltevrede, P., additional, Lyne, A. G., additional, Zagkouris, K., additional, Hassall, T. E., additional, Bilous, A. V., additional, Breton, R. P., additional, Falcke, H., additional, Grießmeier, J.-M., additional, Keane, E., additional, Karastergiou, A., additional, Kuniyoshi, M., additional, Noutsos, A., additional, Osłowski, S., additional, Serylak, M., additional, Sobey, C., additional, ter Veen, S., additional, Alexov, A., additional, Anderson, J., additional, Asgekar, A., additional, Avruch, I. M., additional, Bell, M. E., additional, Bentum, M. J., additional, Bernardi, G., additional, Bîrzan, L., additional, Bonafede, A., additional, Breitling, F., additional, Broderick, J. W., additional, Brüggen, M., additional, Ciardi, B., additional, Corbel, S., additional, de Geus, E., additional, de Jong, A., additional, Deller, A., additional, Duscha, S., additional, Eislöffel, J., additional, Fallows, R. A., additional, Fender, R., additional, Ferrari, C., additional, Frieswijk, W., additional, Garrett, M. A., additional, Gunst, A. W., additional, Hamaker, J. P., additional, Heald, G., additional, Horneffer, A., additional, Jonker, P., additional, Juette, E., additional, Kuper, G., additional, Maat, P., additional, Mann, G., additional, Markoff, S., additional, McFadden, R., additional, McKay-Bukowski, D., additional, Miller-Jones, J. C. A., additional, Nelles, A., additional, Paas, H., additional, Pandey-Pommier, M., additional, Pietka, M., additional, Pizzo, R., additional, Polatidis, A. G., additional, Reich, W., additional, Röttgering, H., additional, Rowlinson, A., additional, Schwarz, D., additional, Smirnov, O., additional, Steinmetz, M., additional, Stewart, A., additional, Swinbank, J. D., additional, Tagger, M., additional, Tang, Y., additional, Tasse, C., additional, Thoudam, S., additional, Toribio, M. C., additional, van der Horst, A. J., additional, Vermeulen, R., additional, Vocks, C., additional, van Weeren, R. J., additional, Wijers, R. A. M. J., additional, Wijnands, R., additional, Wijnholds, S. J., additional, Wucknitz, O., additional, and Zarka, P., additional
- Published
- 2016
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- View/download PDF
344. A LOFAR census of millisecond pulsars
- Author
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Kondratiev, V. I., primary, Verbiest, J. P. W., additional, Hessels, J. W. T., additional, Bilous, A. V., additional, Stappers, B. W., additional, Kramer, M., additional, Keane, E. F., additional, Noutsos, A., additional, Osłowski, S., additional, Breton, R. P., additional, Hassall, T. E., additional, Alexov, A., additional, Cooper, S., additional, Falcke, H., additional, Grießmeier, J.-M., additional, Karastergiou, A., additional, Kuniyoshi, M., additional, Pilia, M., additional, Sobey, C., additional, ter Veen, S., additional, van Leeuwen, J., additional, Weltevrede, P., additional, Bell, M. E., additional, Broderick, J. W., additional, Corbel, S., additional, Eislöffel, J., additional, Markoff, S., additional, Rowlinson, A., additional, Swinbank, J. D., additional, Wijers, R. A. M. J., additional, Wijnands, R., additional, and Zarka, P., additional
- Published
- 2016
- Full Text
- View/download PDF
345. Correlated optical, X-ray, and γ-ray flaring activity seen with INTEGRAL during the 2015 outburst of V404 Cygni
- Author
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Rodriguez, J., Cadolle Bel, M., Alfonso-Garzón, J., Siegert, T., Zhang, X.-L, Grinberg, V., Savchenko, V., Tomsick, J. A., Chenevez, J., Clavel, M., Corbel, S., Diehl, R., Domingo, A., Gouiffès, C., Greiner, J., Krause, M. G. H., Laurent, P., Loh, A., Markoff, S., Mas-Hesse, J. M., Miller-Jones, J. C. A., Russell, D. M., Wilms, J., Rodriguez, J., Cadolle Bel, M., Alfonso-Garzón, J., Siegert, T., Zhang, X.-L, Grinberg, V., Savchenko, V., Tomsick, J. A., Chenevez, J., Clavel, M., Corbel, S., Diehl, R., Domingo, A., Gouiffès, C., Greiner, J., Krause, M. G. H., Laurent, P., Loh, A., Markoff, S., Mas-Hesse, J. M., Miller-Jones, J. C. A., Russell, D. M., and Wilms, J.
- Abstract
After 25 years of quiescence, the microquasar V404 Cyg entered a new period of activity in June 2015. This X-ray source is known to undergo extremely bright and variable outbursts seen at all wavelengths. It is therefore an object of prime interest to understand the accretion-ejection connections. These can, however, only be probed through simultaneous observations at several wavelengths. We made use of the INTEGRAL instruments to obtain long, almost uninterrupted observations from 2015 June 20, 15:50 UTC to June 25, 4:05 UTC, from the optical V band up to the soft y-rays. V404 Cyg was extremely variable in all bands, with the detection of 18 flares with fluxes exceeding 6 Crab (20-40 keV) within three days. The flare recurrence can be as short as ~20 min from peak to peak. A model-independent analysis shows that the >6 Crab flares have a hard spectrum. A simple 10-400 keV spectral analysis of the off-flare and flare periods shows that the variation in intensity is likely to be only due to variations of a cut-off power-law component. The optical flares seem to be at least of two different types: one occurring in simultaneity with the X-ray flares, the other showing a delay greater than 10 min. The former could be associated with X-ray reprocessing by either an accretion disk or the companion star. We suggest that the latter are associated with plasma ejections that have also been seen in radio.
- Published
- 2015
346. SUB-mm Jet Properties of the X-Ray Binary Swift J1745-26
- Author
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Tetarenko, A., Sivakoff, G., Miller-Jones, James, Curran, Peter, Russell, T., Coulson, I., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Petitpas, G., Rupen, M., Rushton, A., Russell, D., Sarazin, C., Tetarenko, A., Sivakoff, G., Miller-Jones, James, Curran, Peter, Russell, T., Coulson, I., Heinz, S., Maitra, D., Markoff, S., Migliari, S., Petitpas, G., Rupen, M., Rushton, A., Russell, D., and Sarazin, C.
- Abstract
We present the results of our observations of the early stages of the 2012–2013 outburst of the transient black hole X-ray binary (BHXRB), Swift J1745–26, with the Very Large Array, Submillimeter Array, and James Clerk Maxwell telescope (SCUBA–2). Our data mark the first multiple-band mm and sub-mm observations of a BHXRB. During our observations the system was in the hard accretion state producing a steady, compact jet. The unique combination of radio and mm/sub-mm data allows us to directly measure the spectral indices in and between the radio and mm/sub-mm regimes, including the first mm/sub-mm spectral index measured for a BHXRB. Spectral fitting revealed that both the mm (230 GHz) and sub-mm (350 GHz) measurements are consistent with extrapolations of an inverted power law from contemporaneous radio data (1–30 GHz). This indicates that, as standard jet models predict, a power law extending up to mm/sub-mm frequencies can adequately describe the spectrum, and suggests that the mechanism driving spectral inversion could be responsible for the high mm/sub-mm fluxes (compared to radio fluxes) observed in outbursting BHXRBs. While this power law is also consistent with contemporaneous optical data, the optical data could arise from either jet emission with a jet spectral break frequency of ν break ≳1×10 14 Hz or the combination of jet emission with a lower jet spectral break frequency of ν break ≳2×10 11 Hz and accretion disk emission. Our analysis solidifies the importance of the mm/sub-mm regime in bridging the crucial gap between radio and IR frequencies in the jet spectrum, and justifies the need to explore this regime further.
- Published
- 2015
347. The LOFAR Multifrequency Snapshot Sky Survey (MSSS) : I. Survey description and first results
- Author
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Heald, G. H., Pizzo, R. F., Orrú, E., Breton, R. P., Carbone, D., Ferrari, C., Hardcastle, M. J., Jurusik, W., Macario, G., Mulcahy, D., Rafferty, D., Asgekar, A., Brentjens, M., Fallows, R. A., Frieswijk, W., Toribio, M. C., Adebahr, B., Arts, M., Bell, M. R., Bonafede, A., Bray, J., Broderick, J., Cantwell, T., Carroll, P., Cendes, Y., Clarke, A. O., Croston, J., Daiboo, S., de Gasperin, F., Gregson, J., Harwood, J., Hassall, T., Heesen, V., Horneffer, A., van der Horst, A. J., Iacobelli, M., Jelić, V., Jones, D., Kant, D., Kokotanekov, G., Martin, P., McKean, J. P., Morabito, L. K., Nikiel-Wroczy´nski, B., Offringa, A., Pandey, V. N., Pandey-Pommier, M., Pietka, M., Pratley, L., Riseley, C., Rowlinson, A., Sabater, J., Scaife, A. M. M., Scheers, L. H. A., Sendlinger, K., Shulevski, A., Sipior, M., Sobey, C., Stewart, A. J., Stroe, A., Swinbank, J., Tasse, C., Trüstedt, J., Varenius, E., van Velzen, S., Vilchez, N., van Weeren, R. J., Wijnholds, S., Williams, W. L., de Bruyn, A. G., Nijboer, R., Wise, M., Alexov, A., Anderson, J., Avruch, I. M., Beck, R., Bell, M. E., van Bemmel, I., Bentum, M. J., Bernardi, G., Best, P., Breitling, F., Brouw, W. N., Brüggen, M., Butcher, H. R., Ciardi, B., Conway, J. E., de Geus, E., de Jong, A., de Vos, M., Deller, A., Dettmar, R. -J, Duscha, S., Eislöffel, J., Engels, D., Falcke, H., Fender, R., Garrett, M. A., Grießmeier, J., Gunst, A. W., Hamaker, J. P., Hessels, J. W. T., Hoeft, M., Hörandel, J., Holties, H. A., Intema, H., Jackson, N. J., Jütte, E., Karastergiou, A., Klijn, W. F. A., Kondratiev, V. I., Koopmans, L. V. E., Kuniyoshi, M., Kuper, G., Law, C., van Leeuwen, J., Loose, M., Maat, P., Markoff, S., McFadden, R., McKay-Bukowski, D., Mevius, M., Miller-Jones, J. C. A., Morganti, R., Munk, H., Nelles, A., Noordam, J. E., Norden, M. J., Paas, H., Polatidis, A. G., Reich, W., Renting, A., Röttgering, H., Schoenmakers, A., Schwarz, D., Sluman, J., Smirnov, O., Stappers, B. W., Steinmetz, M., Tagger, M., Tang, Y., ter Veen, S., Thoudam, Satyendra, Vermeulen, R., Vocks, C., Vogt, C., Wijers, R. A. M. J., Wucknitz, O., Yatawatta, S., Zarka, P., Heald, G. H., Pizzo, R. F., Orrú, E., Breton, R. P., Carbone, D., Ferrari, C., Hardcastle, M. J., Jurusik, W., Macario, G., Mulcahy, D., Rafferty, D., Asgekar, A., Brentjens, M., Fallows, R. A., Frieswijk, W., Toribio, M. C., Adebahr, B., Arts, M., Bell, M. R., Bonafede, A., Bray, J., Broderick, J., Cantwell, T., Carroll, P., Cendes, Y., Clarke, A. O., Croston, J., Daiboo, S., de Gasperin, F., Gregson, J., Harwood, J., Hassall, T., Heesen, V., Horneffer, A., van der Horst, A. J., Iacobelli, M., Jelić, V., Jones, D., Kant, D., Kokotanekov, G., Martin, P., McKean, J. P., Morabito, L. K., Nikiel-Wroczy´nski, B., Offringa, A., Pandey, V. N., Pandey-Pommier, M., Pietka, M., Pratley, L., Riseley, C., Rowlinson, A., Sabater, J., Scaife, A. M. M., Scheers, L. H. A., Sendlinger, K., Shulevski, A., Sipior, M., Sobey, C., Stewart, A. J., Stroe, A., Swinbank, J., Tasse, C., Trüstedt, J., Varenius, E., van Velzen, S., Vilchez, N., van Weeren, R. J., Wijnholds, S., Williams, W. L., de Bruyn, A. G., Nijboer, R., Wise, M., Alexov, A., Anderson, J., Avruch, I. M., Beck, R., Bell, M. E., van Bemmel, I., Bentum, M. J., Bernardi, G., Best, P., Breitling, F., Brouw, W. N., Brüggen, M., Butcher, H. R., Ciardi, B., Conway, J. E., de Geus, E., de Jong, A., de Vos, M., Deller, A., Dettmar, R. -J, Duscha, S., Eislöffel, J., Engels, D., Falcke, H., Fender, R., Garrett, M. A., Grießmeier, J., Gunst, A. W., Hamaker, J. P., Hessels, J. W. T., Hoeft, M., Hörandel, J., Holties, H. A., Intema, H., Jackson, N. J., Jütte, E., Karastergiou, A., Klijn, W. F. A., Kondratiev, V. I., Koopmans, L. V. E., Kuniyoshi, M., Kuper, G., Law, C., van Leeuwen, J., Loose, M., Maat, P., Markoff, S., McFadden, R., McKay-Bukowski, D., Mevius, M., Miller-Jones, J. C. A., Morganti, R., Munk, H., Nelles, A., Noordam, J. E., Norden, M. J., Paas, H., Polatidis, A. G., Reich, W., Renting, A., Röttgering, H., Schoenmakers, A., Schwarz, D., Sluman, J., Smirnov, O., Stappers, B. W., Steinmetz, M., Tagger, M., Tang, Y., ter Veen, S., Thoudam, Satyendra, Vermeulen, R., Vocks, C., Vogt, C., Wijers, R. A. M. J., Wucknitz, O., Yatawatta, S., and Zarka, P.
- Abstract
We present the Multifrequency Snapshot Sky Survey (MSSS), the first northern-sky Low Frequency Array (LOFAR) imaging survey. In this introductory paper, we first describe in detail the motivation and design of the survey. Compared to previous radio surveys, MSSS is exceptional due to its intrinsic multifrequency nature providing information about the spectral properties of the detected sources over more than two octaves (from 30 to 160 MHz). The broadband frequency coverage, together with the fast survey speed generated by LOFAR’s multibeaming capabilities, make MSSS the first survey of the sort anticipated to be carried out with the forthcoming Square Kilometre Array (SKA). Two of the sixteen frequency bands included in the survey were chosen to exactly overlap the frequency coverage of large-area Very Large Array (VLA) and Giant Metrewave Radio Telescope (GMRT) surveys at 74 MHz and 151 MHz respectively. The survey performance is illustrated within the MSSS Verification Field (MVF), a region of 100 square degrees centered at (α,δ)J2000 = (15h,69°). The MSSS results from the MVF are compared with previous radio survey catalogs. We assess the flux and astrometric uncertainties in the catalog, as well as the completeness and reliability considering our source finding strategy. We determine the 90% completeness levels within the MVF to be 100 mJy at 135 MHz with 108″ resolution, and 550 mJy at 50 MHz with 166″ resolution. Images and catalogs for the full survey, expected to contain 150 000–200 000 sources, will be released to a public web server. We outline the plans for the ongoing production of the final survey products, and the ultimate public release of images and source catalogs.
- Published
- 2015
- Full Text
- View/download PDF
348. Lunar occultation of the diffuse radio sky : LOFAR measurements between 35 and 80 MHz
- Author
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Vedantham, H. K., Koopmans, L. V. E., de Bruyn, A. G., Wijnholds, S. J., Brentjens, M., Abdalla, F. B., Asad, K. M. B., Bernardi, G., Bus, S., Chapman, E., Ciardi, B., Daiboo, S., Fernandez, E. R., Ghosh, A., Harker, G., Jelic, V., Jensen, H., Kazemi, S., Lambropoulos, P., Martinez-Rubi, O., Mellema, G., Mevius, M., Offringa, A. R., Pandey, V. N., Patil, A. H., Thomas, R. M., Veligatla, V., Yatawatta, S., Zaroubi, S., Anderson, J., Asgekar, A., Bell, M. E., Bentum, M. J., Best, P., Bonafede, A., Breitling, F., Broderick, J., Brüggen, M., Butcher, H. R., Corstanje, A., de Gasperin, F., de Geus, E., Deller, A., Duscha, S., Eislöffel, J., Engels, D., Falcke, H., Fallows, R. A., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., Grießmeier, J., Gunst, A. W., Hassall, T. E., Heald, G., Hoeft, M., Hörandel, J., Iacobelli, M., Juette, E., Kondratiev, V. I., Kuniyoshi, M., Kuper, G., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., McKean, J. P., Mulcahy, D. D., Munk, H., Nelles, A., Norden, M. J., Orru, E., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Reich, W., Renting, A., Röttgering, H., Schwarz, D., Shulevski, A., Smirnov, O., Stappers, B. W., Steinmetz, M., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., ter Veen, S., Thoudam, Satyendra, Toribio, C., Vocks, C., Wise, M. W., Wucknitz, O., Zarka, P., Vedantham, H. K., Koopmans, L. V. E., de Bruyn, A. G., Wijnholds, S. J., Brentjens, M., Abdalla, F. B., Asad, K. M. B., Bernardi, G., Bus, S., Chapman, E., Ciardi, B., Daiboo, S., Fernandez, E. R., Ghosh, A., Harker, G., Jelic, V., Jensen, H., Kazemi, S., Lambropoulos, P., Martinez-Rubi, O., Mellema, G., Mevius, M., Offringa, A. R., Pandey, V. N., Patil, A. H., Thomas, R. M., Veligatla, V., Yatawatta, S., Zaroubi, S., Anderson, J., Asgekar, A., Bell, M. E., Bentum, M. J., Best, P., Bonafede, A., Breitling, F., Broderick, J., Brüggen, M., Butcher, H. R., Corstanje, A., de Gasperin, F., de Geus, E., Deller, A., Duscha, S., Eislöffel, J., Engels, D., Falcke, H., Fallows, R. A., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., Grießmeier, J., Gunst, A. W., Hassall, T. E., Heald, G., Hoeft, M., Hörandel, J., Iacobelli, M., Juette, E., Kondratiev, V. I., Kuniyoshi, M., Kuper, G., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., McKean, J. P., Mulcahy, D. D., Munk, H., Nelles, A., Norden, M. J., Orru, E., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Reich, W., Renting, A., Röttgering, H., Schwarz, D., Shulevski, A., Smirnov, O., Stappers, B. W., Steinmetz, M., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., ter Veen, S., Thoudam, Satyendra, Toribio, C., Vocks, C., Wise, M. W., Wucknitz, O., and Zarka, P.
- Abstract
We present radio observations of the Moon between 35 and 80 MHz to demonstrate a novel technique of interferometrically measuring large-scale diffuse emission extending far beyond the primary beam (global signal) for the first time. In particular, we show that (i) the Moon appears as a negative-flux source at frequencies 35 < ν < 80 MHz since it is ‘colder’ than the diffuse Galactic background it occults, (ii) using the (negative) flux of the lunar disc, we can reconstruct the spectrum of the diffuse Galactic emission with the lunar thermal emission as a reference, and (iii) that reflected RFI (radio-frequency interference) is concentrated at the centre of the lunar disc due to specular nature of reflection, and can be independently measured. Our RFI measurements show that (i) Moon-based Cosmic Dawn experiments must design for an Earth-isolation of better than 80 dB to achieve an RFI temperature <1 mK, (ii) Moon-reflected RFI contributes to a dipole temperature less than 20 mK for Earth-based Cosmic Dawn experiments, (iii) man-made satellite-reflected RFI temperature exceeds 20 mK if the aggregate scattering cross-section of visible satellites exceeds 175 m2 at 800 km height, or 15 m2 at 400 km height. Currently, our diffuse background spectrum is limited by sidelobe confusion on short baselines (10–15 per cent level). Further refinement of our technique may yield constraints on the redshifted global 21 cm signal from Cosmic Dawn (40 > z > 12) and the Epoch of Reionization (12 > z > 5).
- Published
- 2015
- Full Text
- View/download PDF
349. Constraints on relativistic jets in quiescent black hole X-ray binaries from broad-band spectral modelling
- Author
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Plotkin, R.M., Gallo, E., Markoff, S., Homan, J., Jonker, P.G., Miller-Jones, J.C.A., Russell, D.M., Drappeau, S., Plotkin, R.M., Gallo, E., Markoff, S., Homan, J., Jonker, P.G., Miller-Jones, J.C.A., Russell, D.M., and Drappeau, S.
- Abstract
Contains fulltext : 139606.pdf (preprint version ) (Open Access)
- Published
- 2015
350. Radio monitoring of the hard state jets in the 2011 outburst of MAXI J1836−194
- Author
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Russell, T.D., Miller-Jones, J.C.A., Curran, P.A., Soria, R., Altamirano, D., Corbel, S., Coriat, M., Moin, A., Russell, D.M., Sivakoff, G.R., Slaven-Blair, T.J., Belloni, T.M., Fender, R.P., Heinz, S., Jonker, P.G., Krimm, H.A., Körding, E.G., Maitra, D., Markoff, S., Middleton, M., Migliari, S., Remillard, R.A., Rupen, M.P., Sarazin, C.L., Tetarenko, A.J., Torres, M.A.P., Tudose, V., Tzioumis, A.K., Russell, T.D., Miller-Jones, J.C.A., Curran, P.A., Soria, R., Altamirano, D., Corbel, S., Coriat, M., Moin, A., Russell, D.M., Sivakoff, G.R., Slaven-Blair, T.J., Belloni, T.M., Fender, R.P., Heinz, S., Jonker, P.G., Krimm, H.A., Körding, E.G., Maitra, D., Markoff, S., Middleton, M., Migliari, S., Remillard, R.A., Rupen, M.P., Sarazin, C.L., Tetarenko, A.J., Torres, M.A.P., Tudose, V., and Tzioumis, A.K.
- Abstract
Contains fulltext : 141186.pdf (preprint version ) (Open Access)
- Published
- 2015
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