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NuSTAR results and future plans for magnetar and rotation-powered pulsar observations

An, H. and Bhalerao, V. and Bellm, E. C. and Forster, K. and Grefenstette, B. W. and Harrison, F. A. and Madsen, K. K. and Rana, V. R. and Tendulkar, S. (2014) NuSTAR results and future plans for magnetar and rotation-powered pulsar observations. Astronomische Nachrichten, 335 (3). pp. 280-284. ISSN 0004-6337 . http://resolver.caltech.edu/CaltechAUTHORS:20140410-114248478

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Abstract

The Nuclear Spectroscopic Telescope Array (NuSTAR) is the first focusing hard X-ray mission in orbit and operates in the 3–79 keV range. NuSTAR's sensitivity is roughly two orders of magnitude better than previous missions in this energy band thanks to its superb angular resolution. Since its launch in 2012 June, NuSTAR has performed excellently and observed many interesting sources including four magnetars, two rotation-powered pulsars and the cataclysmic variable AE Aquarii. NuSTAR also discovered 3.76-s pulsations from the transient source SGR J1745–29 recently found by Swift very close to the Galactic center, clearly identifying the source as a transient magnetar. For magnetar 1E 1841–045, we show that the spectrum is well fit by an absorbed blackbody plus broken power-law model with a hard power-law photon index of ∼ 1.3. This is consistent with previous results by INTEGRAL and RXTE. We also find an interesting double-peaked pulse profile in the 25–35 keV band. For AE Aquarii, we show that the spectrum can be described by a multi-temperature thermal model or a thermal plus non-thermal model; a multi-temperature thermal model without a non-thermal component cannot be ruled out. Furthermore, we do not see a spiky pulse profile in the hard X-ray band, as previously reported based on Suzaku observations. For other magnetars and rotation-powered pulsars observed with NuSTAR, data analysis results will be soon available.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/asna.201312032DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/asna.201312032/abstractPublisherArticle
http://arxiv.org/abs/1402.1079arXivDiscussion Paper
ORCID:
AuthorORCID
Bellm, E. C.0000-0001-8018-5348
Harrison, F. A.0000-0003-2992-8024
Madsen, K. K.0000-0003-1252-4891
Rana, V. R.0000-0003-1703-8796
Additional Information:© 2014 Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim. Received 2013 Dec 20; accepted 2014 Jan 14; Published online 2014 Mar 16. This work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (USA). V.M.K. acknowledges support from an NSERC Discovery Grant, the FQRNT Centre de Recherche Astrophysique du Québec, an R. Howard Webster Foundation Fellowship from the Canadian Institute for Advanced Research (CIFAR), the Canada Research Chairs Program and the Lorne Trottier Chair in Astrophysics and Cosmology. A.M.B. acknowledges the support by NASA grants NNX10AI72G and NNX13AI34G. Part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DEAC52-07NA27344.
Group:NuSTAR, Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANNG08FD60C
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Fonds de recherche du Québe-Nature et technologies (FRQ-NT)UNSPECIFIED
Canadian Institute for Advanced Research (CIFAR)UNSPECIFIED
Canada Research Chairs ProgramUNSPECIFIED
Lorne Trottier Chair in Astrophysics and CosmologyUNSPECIFIED
NASANNX10AI72G
NASANNX13AI34G
Department of Energy (DOE)DE-AC52-07NA27344
Subject Keywords:space vehicles; stars: neutron; telescopes; X-rays: stars
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2014-68
Record Number:CaltechAUTHORS:20140410-114248478
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140410-114248478
Official Citation:An, H., Kaspi, V.M., Archibald, R., Bachetti, M., Bhalerao, V., Bellm, E. C., Beloborodov, A. M., Boggs, S. E., Chakrabarty, D., Christensen, F. E., Craig, W. W., Dufour, F., Forster, K., Gotthelf, E. V., Grefenstette, B. W., Hailey, C. J., Harrison, F. A., Hascoët, R., Kitaguchi, T., Kouveliotou, Ch., Madsen, K. K., Mori, K., Pivovaroff, M. J., Rana, V. R., Stern, D., Tendulkar, S., Tomsick, J. A., Vogel, J. K., Zhang, W. W. and the NuSTAR Team (2014), NuSTAR results and future plans for magnetar and rotation-powered pulsar observations. Astron. Nachr., 335: 280–284. doi: 10.1002/asna.201312032
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44857
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:10 Apr 2014 21:40
Last Modified:28 Oct 2017 03:04

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