Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Ashley L. King"'
Autor:
Edward M. Cackett, Ashley L. King, Jessie C. Runnoe, Jon M. Miller, Edmund Hodges-Kluck, Adi Foord, Mark Reynolds, Kayhan Gültekin, Julia M. Comerford
We present the first results from BAYMAX (Bayesian AnalYsis of Multiple AGN in X-rays), a tool that uses a Bayesian framework to quantitatively evaluate whether a given Chandra observation is more likely a single or dual point source. Although the mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d27f2896580b66c62df1ac422e6c9e8
http://arxiv.org/abs/1904.06363
http://arxiv.org/abs/1904.06363
We have examined a sample of 13 sub-Eddington supermassive black holes hosted by galaxies spanning a variety of morphological classifications to further understand the empirical fundamental plane of black hole activity. This plane describes black hol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::851f023df0e09afcb726ebd3f8f6c736
Autor:
Jon M. Miller, Renee M. Ludlam, Nathalie Degenaar, Edward M. Cackett, Ashley L. King, Diego Altamirano, Andrea Sanna
Publikováno v:
Astrophysical Journal, 847(2):135. IOP Publishing Ltd.
We perform a reflection study on a new observation of the neutron star low-mass X-ray binary Aquila X-1 taken with NuSTAR during the August 2016 outburst and compare with the July 2014 outburst. The source was captured at $\sim32\%\ L_{\mathrm{Edd}}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a5b7407046fcaf0244a90af6614d562
Autor:
Tiziana Di Matteo, Kristina Nyland, Ashley L. King, Michael P. Rupen, Jon M. Miller, Edward M. Cackett, Kayhan Gültekin, Sera Markoff
Publikováno v:
Astrophysical Journal, 871(1):80. IOP Publishing Ltd.
We present an analysis of the fundamental plane of black hole accretion, an empirical correlation of the mass of a black hole ($M$), its 5 GHz radio continuum luminosity ($\nu L_{\nu}$), and its 2-10 keV X-ray power-law continuum luminosity ($L_X$).
Autor:
Finn Erland Christensen, Abderahmen Zoghbi, C. J. Hailey, Fiona A. Harrison, Timothy R. Kallman, William W. Zhang, M. C. Miller, Christopher S. Reynolds, Daniel Proga, S. E. Boggs, Ashley L. King, Daniel Stern, Andrew C. Fabian, John C. Raymond, Jon M. Miller, Jelle Kaastra, Walter Craig
Publikováno v:
Zoghbi, A, Miller, M C, King, A L, Proga, D, Kallman, T, Fabian, A C, Harrison, F A, Kaastra, J, Raymond, J, Reynolds, C S, Boggs, S E, Christensen, F E, Craig, W, Hailey, C J, Stern, D & Zhang, W W 2016, ' Disk-Wind Connection During the Heartbeats of GRS 1915+105 ', Astrophysical Journal, vol. 833, no. 2, 165 . https://doi.org/10.3847/1538-4357/833/2/165
Disk and wind signatures are seen in the soft state of Galactic black holes, while the jet is seen in the hard state. Here we study the disk–wind connection in the ρ class of variability in GRS 1915+105 using a joint NuSTAR–Chandra observation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fb29f7adedf471b1effbfa80248c737
https://orbit.dtu.dk/en/publications/c90e4a82-f067-4401-9a74-1e6f251347aa
https://orbit.dtu.dk/en/publications/c90e4a82-f067-4401-9a74-1e6f251347aa
Autor:
William W. Craig, Fiona A. Harrison, Daniel Stern, Ashley L. King, Deepto Chakrabarty, Michael Parker, P. Romano, Didier Barret, John A. Tomsick, Jon M. Miller, Felix Fürst, Jérôme Chenevez, Charles J. Hailey, Finn E. Christensen, Steven E. Boggs, William W. Zhang, Dominic J. Walton
Publikováno v:
King, A L, Tomsick, J A, Miller, J M, Chenevez, J, Barret, D, Boggs, S E, Chakrabarty, D, Christensen, F E, Craig, W W, Fürst, F, Hailey, C J, Harrison, F A, Parker, M L, Stern, D, Romano, P, Walton, D J & Zhang, W W 2016, ' Measuring a truncated disk in Aquila X-1 ', The Astrophysical Journal Letters, vol. 819, no. 2, pp. L29 . https://doi.org/10.3847/2041-8205/819/2/L29
We present NuSTAR and Swift observations of the neutron star Aquila X-1 during the peak of its July 2014 outburst. The spectrum is soft with strong evidence for a broad Fe K\alpha line. Modeled with a relativistically broadened reflection model, we f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b97575fd8907dd37d7922638b0a63a61
http://hdl.handle.net/20.500.12386/25869
http://hdl.handle.net/20.500.12386/25869
Autor:
Charles J. Hailey, Finn E. Christensen, Steven E. Boggs, Francesco Tombesi, Patrick Ogle, William W. Zhang, Daniel Stern, Mislav Baloković, Francesco Ursini, Dominic J. Walton, Ashley L. King, Greg Madejski, Christopher S. Reynolds, Anne M. Lohfink, Andrew C. Fabian, David R. Ballantyne, William W. Craig, A. Zoghbi, Giorgio Matt, Fiona A. Harrison
Publikováno v:
Lohfink, A M, Ogle, P, Tombesi, F, Walton, D, Balokovic, M, Zoghbi, A, Ballantyne, D R, Boggs, S E, Christensen, F E, Craig, W W, Fabian, A C, Hailey, C J, Harrison, F A, King, A L, Madejski, G, Matt, G, Reynolds, C S, Stern, D, Ursini, F & Zhang, W W 2015, ' The corona of the broad-line radio galaxy 3C 390.3 ', Astrophysical Journal, vol. 814, no. 1, 24 . https://doi.org/10.1088/0004-637X/814/1/24
We present the results from a joint Suzaku/NuSTAR broad-band spectral analysis of 3C 390.3. The high quality data enables us to clearly separate the primary continuum from the reprocessed components allowing us to detect a high energy spectral cut-of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::018f1dc78241c71b0fb85b0f91e0935b
https://resolver.caltech.edu/CaltechAUTHORS:20151022-144502050
https://resolver.caltech.edu/CaltechAUTHORS:20151022-144502050
As one of the best-characterized stellar-mass black holes, with good measurements of its mass, distance and inclination, V404 Cyg is the ideal candidate to study Eddington-limited accretion episodes. After a long quiescent period, V404 Cyg underwent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b742caeb8bfd6a8a54be6742a42f10da
http://arxiv.org/abs/1508.01181
http://arxiv.org/abs/1508.01181
Autor:
Ashley L. King, Tod E. Strohmayer, Rubens C. Reis, Jonah Miller, Mark Reynolds, Dipankar Maitra, Kayhan Gültekin
Publikováno v:
Science. 337:949-951
Oscillating Black Hole The massive black holes that reside in the centers of galaxies can occasionally capture and tidally disrupt stars that wander too close. One such tidal disruption event was detected last year by the Swift satellite. Follow-up x
Publikováno v:
The Astrophysical Journal. 835:226
This paper presents an in depth look at the jet and coronal properties of 41 AGN. Utilizing the highest quality NuSTAR, XMM-Newton, and NVSS 1.4 GHz data, we find that the radio Eddington luminosity inversely scales with X-ray reflection fraction, an