Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Murray Brightman"'
Autor:
Murray Brightman, Raffaella Margutti, Ava Polzin, Amruta Jaodand, Kenta Hotokezaka, Jason A. J. Alford, Gregg Hallinan, Elias Kammoun, Kunal Mooley, Megan Masterson, Lea Marcotulli, Arne Rau, Thomas Wevers, George A. Younes, Daniel Stern, Javier A. García, Kristin Madsen
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2024)
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging (
Externí odkaz:
https://doaj.org/article/189b251068b949e9baed50a73280e179
Autor:
Matteo Bachetti, Matthew J. Middleton, Ciro Pinto, Andrés Gúrpide, Dominic J. Walton, Murray Brightman, Bret Lehmer, Timothy P. Roberts, Georgios Vasilopoulos, Jason Alford, Roberta Amato, Elena Ambrosi, Lixin Dai, Hannah P. Earnshaw, Hamza El Byad, Javier A. García, Gian Luca Israel, Amruta Jaodand, Kristin Madsen, Chandreyee Maitra, Shifra Mandel, Kaya Mori, Fabio Pintore, Ken Ohsuga, Maura Pilia, Daniel Stern, George Younes, Anna Wolter
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
Introduction: Ultraluminous X-ray sources (ULXs) represent an extreme class of accreting compact objects: from the identification of some of the accretors as neutron stars to the detection of powerful winds travelling at 0.1–0.2 c, the increasing e
Externí odkaz:
https://doaj.org/article/8a30718b913d4e20b3ce8ab2b4efeaa2
Autor:
Peter G. Boorman, Daniel Stern, Roberto J. Assef, Abhijeet Borkar, Murray Brightman, Johannes Buchner, Chien-Ting Chen, Hannah P. Earnshaw, Fiona A. Harrison, Gabriele A. Matzeu, Ryan W. Pfeifle, Claudio Ricci, Jiří Svoboda, Núria Torres-Albà, Ingyin Zaw
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 230 (2024)
Recent models suggest approximately half of all accreting supermassive black holes (SMBHs; M _BH ≳ 10 ^5 M _⊙ ) are expected to undergo intense growth phases behind Compton-thick ( N _H > 1.5 × 10 ^24 cm ^−2 ) veils of obscuring gas. However,
Externí odkaz:
https://doaj.org/article/26b6e42f78434cc0886de80fee9ae245
Return to the Forgotten Ultraluminous X-Ray Source: A Broadband NICER+NuSTAR Study of NGC 4190 ULX-1
Autor:
Hannah P. Earnshaw, Matteo Bachetti, Murray Brightman, Felix Fürst, Fiona A. Harrison, Matthew Middleton, Renee Ludlam, Sean N. Pike, Daniel Stern, Dominic J. Walton
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 111 (2024)
We observed the nearby and relatively understudied ultraluminous X-ray source (ULX) NGC 4190 ULX-1 jointly with Neutron Star Interior Composition Explorer (NICER) and NuSTAR to investigate its broadband spectrum, timing properties, and spectral varia
Externí odkaz:
https://doaj.org/article/fbd55caeb1fe4f54a317f77c1ddfa4ac
Autor:
M. Lynne Saade, Murray Brightman, Daniel Stern, Thomas Connor, S. G. Djorgovski, Daniel J. D’Orazio, K. E. S. Ford, Matthew J. Graham, Zoltán Haiman, Hyunsung D. Jun, Elias Kammoun, Ralph P. Kraft, Barry McKernan, Alexei Vikhlinin, Dominic J. Walton
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 104 (2024)
We present an analysis of NuSTAR X-ray observations of three active galactic nuclei (AGN) that were identified as candidate subparsec binary supermassive black hole (SMBH) systems in the Catalina Real-Time Transient Survey based on apparent periodici
Externí odkaz:
https://doaj.org/article/584e442a17d949f8b62508e773cb6497
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 1, p L3 (2023)
We present NuSTAR observations of the nearby SN 2023ixf in M101 ( d = 6.9 Mpc) that provide the earliest hard X-ray detection of a nonrelativistic stellar explosion to date at δ t ≈ 4 days and δ t ≈ 11 days. The spectra are well described by a
Externí odkaz:
https://doaj.org/article/9ee37a514eb742c9885dd53c846a7355
Autor:
Murray Brightman, Jean-Marie Hameury, Jean-Pierre Lasota, Ranieri D. Baldi, Gabriele Bruni, Jenna M. Cann, Hannah Earnshaw, Felix Fürst, Marianne Heida, Amruta Jaodand, Margaret Lazzarini, Matthew J. Middleton, Dominic J. Walton, Kimberly A. Weaver
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 1, p 51 (2023)
Ultraluminous X-ray sources (ULXs) are our best laboratories for studying extreme super-Eddington accretion. Most studies of these objects are of relatively persistent sources; however, there is growing evidence to suggest a large fraction of these s
Externí odkaz:
https://doaj.org/article/3ab29fc1d1b146aa9948199c9c398426
Autor:
Hinna Shivkumar, Amruta D. Jaodand, Arvind Balasubramanian, Christoffer Fremling, Alessandra Corsi, Anastasios Tzanidakis, Samaya Nissanke, Mansi Kasliwal, Murray Brightman, Geert Raaijmakers, Kristin Kruse Madsen, Fiona Harrison, Dario Carbone, Nayana A. J., Jean-Michel Désert, Igor Andreoni
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 1, p 86 (2023)
We present optical, radio, and X-ray observations of a rapidly evolving transient SN2019wxt (PS19hgw), discovered during the search for an electromagnetic counterpart to the gravitational-wave (GW) trigger S191213g. Although S191213g was not confirme
Externí odkaz:
https://doaj.org/article/1503770030b44b279525d67ecf623d34
Autor:
Matteo Bachetti, Marianne Heida, Thomas Maccarone, Daniela Huppenkothen, Gian Luca Israel, Didier Barret, Murray Brightman, McKinley Brumback, Hannah P. Earnshaw, Karl Forster, Felix Fürst, Brian W. Grefenstette, Fiona A. Harrison, Amruta D. Jaodand, Kristin K. Madsen, Matthew Middleton, Sean N. Pike, Maura Pilia, Juri Poutanen, Daniel Stern, John A. Tomsick, Dominic J. Walton, Natalie Webb, Jörn Wilms
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2022, 937, ⟨10.3847/1538-4357/ac8d67⟩
The Astrophysical Journal, 2022, 937, ⟨10.3847/1538-4357/ac8d67⟩
M82 X-2 is the first pulsating ultraluminous X-ray source (PULX) discovered. The luminosity of these extreme pulsars, if isotropic, implies an extreme mass transfer rate. An alternative is to assume a much lower mass transfer rate, but with an appare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93647e319255c44286749a620b688aba
https://eprints.soton.ac.uk/472491/
https://eprints.soton.ac.uk/472491/
Autor:
Hannah P. Earnshaw, Murray Brightman, Fiona A. Harrison, Marianne Heida, Amruta Jaodand, Matthew J. Middleton, Timothy P. Roberts, Dominic J. Walton
Publikováno v:
The Astrophysical Journal, 2022, Vol.934(1), pp.42 [Peer Reviewed Journal]
We report the results of a 2019-2021 monitoring campaign with Swift and associated target-of-opportunity observations with XMM-Newton and NuSTAR, examining the spectral and timing behavior of the highly variable ultraluminous X-ray source (ULX) NGC 9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::023fe39eda7f67a5326df45a31f0d713
https://eprints.soton.ac.uk/475453/
https://eprints.soton.ac.uk/475453/