Browsing FAS Scholarly Articles by Author "Hailey, Charles J."

Now showing items 1-6 of 6

    • Evidence for intermediate polars as the origin of the Galactic Center hard X-ray emission 

      Hailey, Charles J.; Mori, Kaya; Perez, Kerstin; Canipe, Alicia M.; Hong, Jaesub; Tomsick, John A.; Boggs, Steven E.; Christensen, Finn E.; Craig, William W.; Fornasini, Francesca; Grindlay, Jonathan E.; Harrison, Fiona A.; Nynka, Melania; Rahoui, Farid; Stern, Daniel; Zhang, Shuo; Zhang, William W. (American Astronomical Society, 2016)
      Recently, unresolved hard (20–40 keV) X-ray emission has been discovered within the central 10 pc of the Galaxy, possibly indicating a large population of intermediate polars (IPs). Chandra and XMM-Newton measurements in ...

    • The Nuclear Spectroscopic Telescope Array (NuSTAR) High-Energy X-Ray Mission 

      Harrison, Fiona A.; Craig, William W.; Christensen, Finn E.; Hailey, Charles J.; Zhang, William W.; Boggs, Steven E.; Stern, Daniel; Cook, W. Rick; Forster, Karl; Giommi, Paolo; Grefenstette, Brian W.; Kim, Yunjin; Kitaguchi, Takao; Koglin, Jason E.; Madsen, Kristin K.; Mao, Peter H.; Miyasaka, Hiromasa; Mori, Kaya; Perri, Matteo; Pivovaroff, Michael J.; Puccetti, Simonetta; Rana, Vikram R.; Westergaard, Niels J.; Willis, Jason; Zoglauer, Andreas; An, Hongjun; Bachetti, Matteo; Barrière, Nicolas M.; Bellm, Eric C.; Bhalerao, Varun; Brejnholt, Nicolai F.; Fuerst, Felix; Liebe, Carl C.; Markwardt, Craig B.; Nynka, Melania; Vogel, Julia K.; Walton, Dominic J.; Wik, Daniel R.; Alexander, David M.; Cominsky, Lynn R.; Hornschemeier, Ann E.; Hornstrup, Allan; Kaspi, Victoria M.; Madejski, Greg M.; Matt, Giorgio; Molendi, Silvano; Smith, David M.; Tomsick, John A.; Ajello, Marco; Ballantyne, David R.; Baloković, Mislav; Barret, Didier; Bauer, Franz E.; Blandford, Roger D.; Brandt, W. Niel; Brenneman, Laura W.; Chiang, James; Chakrabarty, Deepto; Chenevez, Jerome; Comastri, Andrea; Dufour, Francois; Elvis, Martin S.; Fabian, Andrew C.; Farrah, Duncan; Fryer, Chris L.; Gotthelf, Eric V.; Grindlay, Jonathan E.; Helfand, David J.; Krivonos, Roman; Meier, David L.; Miller, Jon M.; Natalucci, Lorenzo; Ogle, Patrick; Ofek, Eran O.; Ptak, Andrew; Reynolds, Stephen P.; Rigby, Jane R.; Tagliaferri, Gianpiero; Thorsett, Stephen E.; Treister, Ezequiel; Urry, C. Megan (IOP Publishing, 2013)
      The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on 2012 June 13, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates in the band from 3 to 79 keV, extending the sensitivity of ...

    • NuSTAR and Chandra Observations of New X-Ray Transients in the Central Parsec of the Galaxy 

      Mori, Kaya; Hailey, Charles J.; Mandel, Shifra; Schutt, Yve E.; Bachetti, Matteo; Coerver, Anna; Baganoff, Frederick K.; Dykaar, Hannah; Grindlay, Jonathan; Haggard, Daryl; Heuer, Keri; Hong, Jaesub; Hord, Benjamin J.; Jin, Chichuan; Nynka, Melania; Ponti, Gabriele; Tomsick, John A. (American Astronomical Society, 2019-11-11)
      We report NuSTAR and Chandra observations of two X-ray transients, SWIFT J174540.7−290015 (T15) and SWIFT J174540.2−290037 (T37), which were discovered by the Neil Gehrels Swift Observatory in 2016 within r ∼ 1 pc of Sgr ...

    • NuSTAR Hard X-ray Survey of the Galactic Center Region I: Hard X-ray Morphology and Spectroscopy of the Diffuse Emission 

      Mori, Kaya; Hailey, Charles J.; Krivonos, Roman; Hong, Jaesub; Ponti, Gabriele; Bauer, Franz; Perez, Kerstin; Nynka, Melania; Zhang, Shuo; Tomsick, John A.; Alexander, David M.; Baganoff, Frederick K.; Barret, Didier; Barrière, Nicolas; Boggs, Steven E.; Canipe, Alicia M.; Christensen, Finn E.; Craig, William W.; Forster, Karl; Giommi, Paolo; Grefenstette, Brian W.; Grindlay, Jonathan E.; Harrison, Fiona A.; Hornstrup, Allan; Kitaguchi, Takao; Koglin, Jason E.; Luu, Vy; Madsen, Kristen K.; Mao, Peter H.; Miyasaka, Hiromasa; Perri, Matteo; Pivovaroff, Michael J.; Puccetti, Simonetta; Rana, Vikram; Stern, Daniel; Westergaard, Niels J.; Zhang, William W.; Zoglauer, Andreas (IOP Publishing, 2015)
      We present the first sub-arcminute images of the Galactic Center above 10 keV, obtained with NuSTAR. NuSTAR resolves the hard X-ray source IGR J17456–2901 into non-thermal X-ray filaments, molecular clouds, point sources, ...

    • NuSTAR Hard X-ray Survey of the Galactic Center Region II: X-ray Point Sources 

      Hong, Jaesub; Mori, Kaya; Hailey, Charles J.; Nynka, Melania; Zhang, Shuo; Gotthelf, Eric; Fornasini, Francesca M.; Krivonos, Roman; Bauer, Franz; Perez, Kerstin; Tomsick, John A.; Bodaghee, Arash; Chiu, Jeng-Lun; Clavel, Maïca; Stern, Daniel; Grindlay, Jonathan E.; Alexander, David M.; Aramaki, Tsuguo; Baganoff, Frederick K.; Barret, Didier; Barrière, Nicolas; Boggs, Steven E.; Canipe, Alicia M.; Christensen, Finn E.; Craig, William W.; Desai, Meera A.; Forster, Karl; Giommi, Paolo; Grefenstette, Brian W.; Harrison, Fiona A.; Hong, Dooran; Hornstrup, Allan; Kitaguchi, Takao; Koglin, Jason E.; Madsen, Kristen K.; Mao, Peter H.; Miyasaka, Hiromasa; Perri, Matteo; Pivovaroff, Michael J.; Puccetti, Simonetta; Rana, Vikram; Westergaard, Niels J.; Zhang, William W.; Zoglauer, Andreas (American Astronomical Society, 2016)
      We present the first survey results of hard X-ray point sources in the Galactic Center (GC) region by NuSTAR. We have discovered 70 hard (3–79 keV) X-ray point sources in a 0.6 deg${}^{2}$ region around Sgr A* with a total ...

    • NuSTAR J163433-4738.7: A Fast X-Ray Transient in the Galactic Plane 

      Tomsick, John A.; Gotthelf, Eric V.; Rahoui, Farid; Assef, Roberto J.; Bauer, Franz E.; Bodaghee, Arash; Boggs, Steven E.; Christensen, Finn E.; Craig, William W.; Fornasini, Francesca M.; Grindlay, Jonathan E.; Hailey, Charles J.; Harrison, Fiona A.; Krivonos, Roman; Natalucci, Lorenzo; Stern, Daniel; Zhang, William W. (IOP Publishing, 2014)
      During hard X-ray observations of the Norma spiral arm region by the Nuclear Spectroscopic Telescope Array (NuSTAR) in 2013 February, a new transient source, NuSTAR J163433-4738.7, was detected at a significance level of ...