Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Robert F. Archibald"'
Autor:
S. E. Boggs, Victoria M. Kaspi, C. Hailey, Sebastien Guillot, D. Stern, Robert F. Archibald, W. W. Zhang, Matthew Bailes, Chris Flynn, William W. Craig, F. Jankowski, Fiona A. Harrison, Matteo Bachetti, Finn Erland Christensen
Publikováno v:
Guillot, S, Kaspi, V M, Archibald, R F, Bachetti, M, Flynn, J C, Jankowski, F, Bailes, M, Boggs, S, Christensen, F E, Craig, W W, Hailey, C A, Harrison, F A, Stern, D & Zhang, W W 2016, ' The NuSTAR view of the non-thermal emission from PSR J0437-4715 ', Monthly Notices of the Royal Astronomical Society, vol. 463, no. 3, pp. 2612-2622 . https://doi.org/10.1093/mnras/stw2194
NASA Astrophysics Data System
NASA Astrophysics Data System
We present a hard X-ray NuSTAR observation of PSR J0437-4715, the nearest millisecond pulsar. The known pulsations at the apparent pulse period ~5.76 ms are detected at energies up to 20 keV. We measure a photon index $\Gamma= 1.65\pm0.24$ (90% confi
Publikováno v:
The Astrophysical Journal. 889:160
Since its discovery, 1E 1048.1$-$5937 has been one of the most active magnetars, both in terms of radiative outbursts, and changes to its spin properties. Here we report on a continuing monitoring campaign with the Neil Gehrels Swift Observatory X-ra
We report on the aftermath of a magnetar outburst from the young, high-magnetic-field radio pulsar PSR J1119-6127 that occurred on 2016 July 27. We present the results of a monitoring campaign using the Neil Gehrels Swift X-ray Telescope, NuSTAR, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aa11fb98a426be99ccf5c6a6d48995f
http://arxiv.org/abs/1806.01414
http://arxiv.org/abs/1806.01414
Autor:
G C Du Toit, T. D. Abbott, A. J. T. Ramaila, P. S. Swart, P. Ntuli, G. de Bruin, Stephanie Smith, T. E. Monama, C. Stuart, Andrew Jameson, R. Spann, H. Kriel, N. Matthysen, J. Horrell, K. M. B. Asad, D. H. Botha, L. P. Williams, L. D. Mc Nally, R. T. Lord, A. Struthers, W. de Villiers, H. Niehaus, E. F. Bauermeister, John Sarkissian, B. Jordaan, R. Andreas, T. G. H. Bennett, J. P. Conradie, Riana Geschke, I. Wait, B. Ngcebetsha, A. van der Byl, Ben Stappers, A. Robyntjies, J. P. Jansen van Rensburg, N. Mabombo, D. H. Hoorn, A. Nzama, Bruce Merry, L. Sofeya, Sharmila Goedhart, L. R. S. Brederode, M. J. Hlakola, I. Rammala, O. Toruvanda, S. Rakoma, B. L. Fanaroff, A. Rust, A. Martens, M. G. Welz, Y. Padayachee, C. T. G. Schollar, S. J. Marais, B. Xaia, J. P. van Staden, F. Karels, T. Baloyi, B. de Swardt, I. Liebenberg, Vanessa A. Moss, A. L. Walker, C.G. Van der Merwe, W. S. New, E. C. Knox-Davies, R. Millenaar, P. Prozesky, L. J. du Toit, O. J. Mokone, K. Madisa, G. Sethosa, Griffin Foster, T. L. Grobler, Tom Alberts, S. S. Passmoor, F. Joubert, A. A. Patel, D. Koch, Ramesh Karuppusamy, L. Richter, Kshitij Thorat, O. Mahgoub, Jason Manley, C. Sharpe, M. J. Slabber, P. L. van der Merwe, S. Fataar, G. B. Taylor, M. Rasivhaga, P. Sunnylall, MacCalvin Kariseb, Gyula I. G. Józsa, A. R. Foley, N. Marais, M. A. Dikgale, J. P. Burger, C. Olyn, S. Paula, A. J. Otto, S. Ratcliffe, B. Pholoholo, R. Renil, T. Macdonald, Justin L. Jonas, R. van Rooyen, P. Scholz, Oleg Smirnov, B. H. Wallace, Fernando Camilo, A. Peens-Hough, S. Lamoor, F. Obies, L. Marais, T. J. Steyn, M. T. O. Ockards, O. Jacobs, C. Mjikelo, A. J. Tiplady, Roy Booth, D. Liebenberg, R. Strong, T. J. van Balla, P. C. van Niekerk, S. D. Matshawule, V. Van Tonder, C. de Waal, S. K. Sirothia, D. Rosekrans, R. M. Adam, L. Mafhungo, Matthew Bailes, G. Adams, P. P. A. Kotzé, D. M. Horn, S. Salie, M. S. de Villiers, Howard C. Reader, A. R. Isaacson, Dehann Fourie, B. Taljaard, C. de Villiers, A. F. Joubert, M. Serylak, T. Mauch, N. Sambu, Victoria M. Kaspi, C. C. Julius, N. Mnyandu, S. Seranyane, A. Krebs, Simon Johnston, N. Young, L. van den Heever, M. Manzini, R. van Wyk, M. Obrocka, N. Songqumase, T. W. Kusel, M. C. Mphego, J. A. Malan, I. P. T. Moeng, P. Malgas, K. J. Ngoasheng, B. M. Lunsky, L. C. Schwardt, M. Merryfield, W. van Straten, V. Thondikulam, B. Hugo, Nadeem Oozeer, Robert F. Archibald, P. Macfarlane, T. Cheetham, Aris Karastergiou, J. Conradie, D. Steyn, S. C. Gumede, S. Makhathini, S. W. P. Esterhuyse, N. Mkhabela, D. Booisen, R. P. M. Julie, Gianni Bernardi, L. Boyana, N. Kriek, Dirk I. L. de Villiers, T. Baxana, Cyril Tasse, M. Maree, Robert Lehmensiek, R. R. G. Gamatham, S. Zitha, D. E. Baker, K. Montshiwa, C. Magozore, Z. R. Ramudzuli, T. Gatsi, George Hobbs, S. J. Buchner, I. P. Theron, R. Siebrits, John Reynolds, A. Hokwana, F. Kapp, L. G. Magnus, V. A. Kasper, J. P. L. Main, J. van Aardt, David B. Davidson
Publikováno v:
Camilo, F, Scholz, P, Serylak, M, Buchner, S, Merryfield, M, Kaspi, V M, Archibald, R F, Bailes, M, Jameson, A, Straten, W V, Sarkissian, J, Reynolds, J E, Johnston, S, Hobbs, G, Abbott, T D, Adam, R M, Adams, G B, Alberts, T, Andreas, R, Asad, K M B, Baker, D E, Baloyi, T, Bauermeister, E F, Baxana, T, Bennett, T G H, Bernardi, G, Booisen, D, Booth, R S, Botha, D H, Boyana, L, Brederode, L R S, Burger, J P, Cheetham, T, Conradie, J, Conradie, J P, Davidson, D B, Bruin, G D, Swardt, B D, Villiers, C D, Villiers, D I L D, Villiers, M S D, Villiers, W D, Waal, C D, Dikgale, M A, Toit, G D, Toit, L J D, Esterhuyse, S W P, Fanaroff, B, Fataar, S, Foley, A R, Foster, G, Fourie, D, Gamatham, R, Gatsi, T, Geschke, R, Goedhart, S, Grobler, T L, Gumede, S C, Hlakola, M J, Hokwana, A, Hoorn, D H, Horn, D, Horrell, J, Hugo, B, Isaacson, A, Jacobs, O, Van Rensburg, J P J, Jonas, J L, Jordaan, B, Joubert, A, Joubert, F, Józsa, G I G, Julie, R, Julius, C C, Kapp, F, Karastergiou, A, Karels, F, Kariseb, M, Karuppusamy, R, Kasper, V, Knox-Davies, E C, Koch, D, Kotzé, P P A, Krebs, A, Kriek, N, Kriel, H, Kusel, T, Lamoor, S, Lehmensiek, R, Liebenberg, D, Liebenberg, I, Lord, R T, Lunsky, B, Mabombo, N, Macdonald, T, Macfarlane, P, Madisa, K, Mafhungo, L, Magnus, L G, Magozore, C, Mahgoub, O, Main, J P L, Makhathini, S, Malan, J A, Malgas, P, Manley, J R, Manzini, M, Marais, L, Marais, N, Marais, S J, Maree, M, Martens, A, Matshawule, S D, Matthysen, N, Mauch, T, Nally, L D M, Merry, B, Millenaar, R P, Mjikelo, C, Mkhabela, N, Mnyandu, N, Moeng, I T, Mokone, O J, Monama, T E, Montshiwa, K, Moss, V, Mphego, M, New, W, Ngcebetsha, B, Ngoasheng, K, Niehaus, H, Ntuli, P, Nzama, A, Obies, F, Obrocka, M, Ockards, M T, Olyn, C, Oozeer, N, Otto, A J, Padayachee, Y, Passmoor, S, Patel, A A, Paula, S, Peens-Hough, A, Pholoholo, B, Prozesky, P, Rakoma, S, Ramaila, A J T, Rammala, I, Ramudzuli, Z R, Rasivhaga, M, Ratcliffe, S, Reader, H C, Renil, R, Richter, L, Robyntjies, A, Rosekrans, D, Rust, A, Salie, S, Sambu, N, Schollar, C T G, Schwardt, L, Seranyane, S, Sethosa, G, Sharpe, C, Siebrits, R, Sirothia, S K, Slabber, M J, Smirnov, O, Smith, S, Sofeya, L, Songqumase, N, Spann, R, Stappers, B, Steyn, D, Steyn, T J, Strong, R, Struthers, A, Stuart, C, Sunnylall, P, Swart, P S, Taljaard, B, Tasse, C, Taylor, G, Theron, I P, Thondikulam, V, Thorat, K, Tiplady, A, Toruvanda, O, Aardt, J V, Balla, T V, Heever, L V D, Byl, A V D, Merwe, C V D, Merwe, P V D, Niekerk, P C V, Rooyen, R V, Staden, J P V, Tonder, V V, Wyk, R V, Wait, I, Walker, A L, Wallace, B, Welz, M, Williams, L P, Xaia, B, Young, N & Zitha, S 2018, ' Revival of the Magnetar PSR J1622-4950 : Observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR ', Astrophysical Journal, vol. 856, no. 2, 180 . https://doi.org/10.3847/1538-4357/aab35a
Astrophys.J.
Astrophys.J., 2018, 856 (2), pp.180. ⟨10.3847/1538-4357/aab35a⟩
Astrophys.J.
Astrophys.J., 2018, 856 (2), pp.180. ⟨10.3847/1538-4357/aab35a⟩
New radio (MeerKAT and Parkes) and X-ray (XMM-Newton, Swift, Chandra, and NuSTAR) observations of PSR J1622-4950 indicate that the magnetar, in a quiescent state since at least early 2015, reactivated between 2017 March 19 and April 5. The radio flux
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1183d8d7140c7cbe20b7bb15b4d0949
https://www.research.manchester.ac.uk/portal/en/publications/revival-of-the-magnetar-psr-j16224950(6839ea7d-de19-4533-ac24-649b0201bc01).html
https://www.research.manchester.ac.uk/portal/en/publications/revival-of-the-magnetar-psr-j16224950(6839ea7d-de19-4533-ac24-649b0201bc01).html
Autor:
Paolo Esposito, John Sarkissian, Robert F. Archibald, Shriharsh P. Tendulkar, Paul Scholz, Victoria M. Kaspi, Matthew Kerr, Nanda Rea, Andrea Possenti, Maxim Lyutikov, G. L. Israel, M. Burgay
Publikováno v:
Astrophysical Journal Letters, 849(2):L20. IOP Publishing Ltd.
Rotation-powered pulsars and magnetars are two different observational manifestations of neutron stars: rotation powered pulsars are rapidly spinning objects that are mostly observed as pulsating radio sources, while magnetars, neutron stars with the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de11f1ca4eaff32932b67855cc61829e
Autor:
Karl Forster, Eric V. Gotthelf, William W. Craig, Romain Hascoet, Andrei M. Beloborodov, Chryssa Kouveliotou, Takao Kitaguchi, Kaya Mori, Finn Erland Christensen, Robert F. Archibald, Victoria M. Kaspi, Daniel Stern, Hongjun An, Steven E. Boggs, Vikram Rana, NuSTAR Team, Francois Dufour, William W. Zhang, Charles J. Hailey, Michael J. Pivovaroff, Brian W. Grefenstette, Fiona A. Harrison, Julia Vogel, John A. Tomsick, Matteo Bachetti, Deepto Chakrabarty, Eric C. Bellm, Kristin K. Madsen, Varun Bhalerao, Shriharsh P. Tendulkar
Publikováno v:
Astronomische Nachrichten. 335:280-284
The Nuclear Spectroscopic Telescope Array (NuSTAR) is the first focusing hard X-ray mission in orbit and operates in the 3-79 keV range. NuSTAR's sensitivity is roughly two orders of magnitude better than previous missions in this energy band thanks
Autor:
Shriharsh P. Tendulkar, Fiona A. Harrison, Robert F. Archibald, M. J. Pivovaroff, John A. Tomsick, Evan Keane, Victoria M. Kaspi, Robert D. Ferdman, Eric V. Gotthelf, Daniel Stern, Sebastien Guillot
We present a phase-coherent timing solution for PSR J1640-4631, a young 206 ms pulsar using X-ray timing observations taken with NuSTAR. Over this timing campaign, we have measured the braking index of PSR J1640-4631 to be n = 3.15+/-0.03. Using a se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ca0cc6e370a143edc16a9c15daa4d95
https://resolver.caltech.edu/CaltechAUTHORS:20160317-120714436
https://resolver.caltech.edu/CaltechAUTHORS:20160317-120714436
Radio pulsars are believed to have their emission powered by the loss of rotational kinetic energy. By contrast, magnetars show intense X-ray and gamma-ray radiation whose luminosity greatly exceeds that due to spin-down and is believed to be powered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63737cac745241f41843b1e9393782e9
Publikováno v:
The astrophysical journal, 2018, Vol.852(2), pp.123 [Peer Reviewed Journal]
We present a timing and glitch analysis of the young X-ray pulsar PSR J0537$-$6910, located within the Large Magellanic Cloud, using 13 years of data from the now decommissioned Rossi X-ray Timing Explorer. Rotating with a spin period of 16 ms, PSR J
We present timing solutions and spin properties of the young pulsar PSR B0540-69 from analysis of 15.8 yr of data from the Rossi X-Ray Timing Explorer. We perform a partially phase-coherent timing analysis in order to mitigate the pronounced effects
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90d67dc118b387e0367512217891336f
https://ueaeprints.uea.ac.uk/id/eprint/67577/
https://ueaeprints.uea.ac.uk/id/eprint/67577/