Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Westergaard, Niels J."'
Autor:
Tumer, Aysegul, Wik, Daniel R., Gaspari, Massimo, Akamatsu, Hiroki, Westergaard, Niels J., Tombesi, Francesco, Ercan, E. Nihal
Galaxy clusters are the largest virialized objects in the universe. Their merger dynamics and their interactions with the cosmic filaments that connect them are important for our understanding of the formation of large-scale structure. In addition, c
Externí odkaz:
http://arxiv.org/abs/2112.07105
Autor:
Fornasini, Francesca M., Tomsick, John A., Hong, JaeSub, Gotthelf, Eric V., Bauer, Franz, Rahoui, Farid, Stern, Daniel, Bodaghee, Arash, Chiu, Jeng-Lun, Clavel, Maïca, Corral-Santana, Jesús M., Hailey, Charles J., Krivonos, Roman A., Mori, Kaya, Alexander, David M., Barret, Didier, Boggs, Steven E., Christensen, Finn E., Craig, William W., Forster, Karl, Giommi, Paolo, Grefenstette, Brian W., Harrison, Fiona A., Hornstrup, Allan, Kitaguchi, Takao, Koglin, J. E., Madsen, Kristin K., Mao, Peter H., Miyasaka, Hiromasa, Perri, Matteo, Pivovaroff, Michael J., Puccetti, Simonetta, Rana, Vikram, Westergaard, Niels J., Zhang, William W.
We present a catalog of hard X-ray sources in a square-degree region surveyed by NuSTAR in the direction of the Norma spiral arm. This survey has a total exposure time of 1.7 Ms, and typical and maximum exposure depths of 50 ks and 1 Ms, respectively
Externí odkaz:
http://arxiv.org/abs/1703.00021
Autor:
Grefenstette, Brian W., Fryer, Chris L., Harrison, Fiona A., Boggs, Steven E., DeLaney, Tracey, Laming, J. Martin, Reynolds, Stephen P., Alexander, David M., Barret, Didier, Christensen, Finn E., Craig, William W., Forster, Karl, Giommi, Paolo, Hailey, Charles J., Hornstrup, Alan, Kitaguchi, Takao, Koglin, J. E., Lopez, Laura, Mao, Peter H., Madsen, Kristin K., Miyasaka, Hiromasa, Mori, Kaya, Perri, Matteo, Pivovaroff, Michael J., Puccetti, Simonetta, Rana, Vikram, Stern, Daniel, Westergaard, Niels J., Wik, Daniel R., Zhang, William W., Zoglauer, Andreas
The distribution of elements produced in the inner-most layers of a supernova explosion is a key diagnostic for studying the collapse of massive stars. Here we present the results of a 2.4 Ms \textit{NuSTAR} observing campaign aimed at studying the s
Externí odkaz:
http://arxiv.org/abs/1612.02774
Autor:
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, David, 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
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 exposure of 1.7 Ms, and 7 sources
Externí odkaz:
http://arxiv.org/abs/1605.03882
Autor:
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, Barriere, 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
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 and a previously unknown cent
Externí odkaz:
http://arxiv.org/abs/1510.04631
Autor:
An, Hongjun, Madsen, Kristin K., Westergaard, Niels J., Boggs, Steven E., Christensen, Finn E., Craig, William W., Hailey, Charles J., Harrison, Fiona A., Stern, Daniel K., Zhang, William W.
We present results of the point spread function (PSF) calibration of the hard X-ray optics of the Nuclear Spectroscopic Telescope Array (NuSTAR). Immediately post-launch, NuSTAR has observed bright point sources such as Cyg X-1, Vela X-1, and Her X-1
Externí odkaz:
http://arxiv.org/abs/1406.7419
Autor:
Wik, Daniel R., Hornstrup, Allan, Molendi, Silvano, Madejski, Grzegorz, Harrison, Fiona A., Zoglauer, Andreas, Grefenstette, Brian W., Gastaldello, Fabio, Madsen, Kristin K., Westergaard, Niels J., Ferreira, Desiree D. M., Kitaguchi, Takao, Pedersen, Kristian, Boggs, Steven E., Christensen, Finn E., Craig, William W., Hailey, Charles J., Stern, Daniel, Zhang, William W.
The search for diffuse non-thermal inverse Compton (IC) emission from galaxy clusters at hard X-ray energies has been undertaken with many instruments, with most detections being either of low significance or controversial. Background and contaminati
Externí odkaz:
http://arxiv.org/abs/1403.2722
Autor:
Harrison, Fiona A., Craig, William W., Christensen, Finn E., Hailey, Charles J., Zhang, Will 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, Barriere, 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., Balokovic, Mislav, Barret, Diddier, Bauer, Franz E., Blandford, Roger D., Brandt, W. Niel, Brenneman, Laura W., Chiang, James, Chakrabarty, Deepto, Chenevez, Jerome, Comastri, Andrea, Elvis, Martin, 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, Jand R., Tagliaferri, Gianpiero, Thorsett, Stephen E., Treister, Ezequiel, Urry, C. Megan
The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on 13 June 2012, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates in the band from 3 -- 79 keV, extending the sensitivity of focusing far beyond the ~10 k
Externí odkaz:
http://arxiv.org/abs/1301.7307
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 21 November 2017 873:5-11
Akademický článek
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