Harrison, Fiona A.35; Craig, William W.36; Christensen, Finn Erland1; Hailey, Charles J.37; Zhang, William W.38; Boggs, Steven E.9; Stern, Daniel35; Cook, W. Rick35; Forster, Karl35; Giommi, Paolo10; Grefenstette, Brian W.35; Yunjin Kim35; Kitaguchi, Takao11; Koglin, Jason E.37; Madsen, Kristin K.35; Mao, Peter H.35; Miyasaka, Hiromasa35; Mori, Kaya37; Perri, Matteo10; Pivovaroff, Michael J.36; Puccetti, Simonetta10; Rana, Vikram R.35; Westergaard, Niels Jørgen Stenfeldt1; Willis, Jason35; Zoglauer, Andreas9; Hongjun An39; Bachetti, Matteo13; Barrie`re, Nicolas M.9; Bellm, Eric C.35; Bhalerao, Varun35; Brejnholt, Nicolai1; Fuerst, Felix35; Liebe, Carl C.35; Markwardt, Craig B.38; Nynka, Melania37; Vogel, Julia K.36; Walton, Dominic J.35; Wik, Daniel R.38; Alexander, David M.14; Cominsky, Lynn R.15; Hornschemeier, Ann E.38; Hornstrup, Allan1; Kaspi, Victoria M.39; Madejski, Greg M.16; Matt, Giorgio17; Molendi, Silvano11; Smith, David M.18; Tomsick, John A.9; Ajello, Marco9; Ballantyne, David R.40; Balokovic´, Mislav35; Barret, Didier13; Bauer, Franz E.20; Blandford, Roger D.21; Brandt, W. Niel41; Brenneman, Laura W.23; Chiang, James21; Chakrabarty, Deepto42; Chenevez, Jérôme1; Comastri, Andrea11; Dufour, Francois39; Elvis, Martin23; Fabian, Andrew C.25; Farrah, Duncan26; Fryer, Chris L.27; Gotthelf, Eric V.37; Grindlay, Jonathan E.23; Helfand, David J.28; Krivonos, Roman9; Meier, David L.35; Miller, Jon M.29; Natalucci, Lorenzo11; Ogle, Patrick35; Ofek, Eran O.43; Ptak, Andrew38; Reynolds, Stephen P.31; Rigby, Jane R.38; Tagliaferri, Gianpiero11; Thorsett, Stephen E.32; Treister, Ezequiel33; Urry, C. Megan34
1 National Space Institute, Technical University of Denmark2 Astrophysics, National Space Institute, Technical University of Denmark3 Department of Physics, Technical University of Denmark4 IT-Department, National Space Institute, Technical University of Denmark5 California Institute of Technology6 Lawrence Livermore National Laboratory7 Columbia University8 NASA Goddard Space Flight Center9 University of California at Berkeley10 ASI Science Data Center11 National Institute for Astrophysics12 McGill University13 Université de Toulouse14 Durham University15 Sonoma State University16 The Institute of Chemical and Physical Research17 Università degli Studi Roma Tre18 University of California, Santa Cruz19 Georgia Institute of Technology20 Pontifícia Universidade Católica21 SLAC National Accelerator Laboratory22 Pennsylvania State University23 Harvard-Smithsonian Center for Astrophysics24 Massachusetts Institute of Technology25 Institute of Astronomy26 Virginia Tech27 Los Alamos National Laboratory28 Queen's University29 University of Michigan30 Weizmann Institute of Science31 North Carolina State University32 Willamette University33 Universidad de Concepcion34 Yale University35 California Institute of Technology36 Lawrence Livermore National Laboratory37 Columbia University38 NASA Goddard Space Flight Center39 McGill University40 Georgia Institute of Technology41 Pennsylvania State University42 Massachusetts Institute of Technology43 Weizmann Institute of Science
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 focusing far beyond the ~10 keV high-energy cutoff achieved by all previous X-ray satellites. The inherently low background associated with concentrating the X-ray light enables NuSTAR to probe the hard X-ray sky with a more than 100-fold improvement in sensitivity over the collimated or coded mask instruments that have operated in this bandpass. Using its unprecedented combination of sensitivity and spatial and spectral resolution, NuSTAR will pursue five primary scientific objectives: (1) probe obscured active galactic nucleus (AGN) activity out to the peak epoch of galaxy assembly in the universe (at z ≲ 2) by surveying selected regions of the sky; (2) study the population of hard X-ray-emitting compact objects in the Galaxy by mapping the central regions of the Milky Way; (3) study the non-thermal radiation in young supernova remnants, both the hard X-ray continuum and the emission from the radioactive element 44Ti; (4) observe blazars contemporaneously with ground-based radio, optical, and TeV telescopes, as well as with Fermi and Swift , to constrain the structure of AGN jets; and (5) observe line and continuum emission from core-collapse supernovae in the Local Group, and from nearby Type Ia events, to constrain explosion models. During its baseline two-year mission, NuSTAR will also undertake a broad program of targeted observations. The observatory consists of two co-aligned grazing-incidence X-ray telescopes pointed at celestial targets by a three-axis stabilized spacecraft. Deployed into a 600 km, near-circular, 6° inclination orbit, the observatory has now completed commissioning, and is performing consistent with pre-launch expectations. NuSTAR is now executing its primary science mission, and with an expected orbit lifetime of 10 yr, we anticipate proposing a guest investigator program, to begin in late 2014.