Broadband Spectral Modeling of NGC 253 from Hard X-rays to TeV Gamma Rays

T.M. Venters, D.R. Wik, B. Lehmer, A.E. Hornschemeier, M. Yukita, A. Ptak, A. Zezas, V. Antoniou, M. Argo, K. Bechtol, S.E. Boggs, F. Christensen, W.W. Craig, C.J. Hailey, F. Harrison, R. Krivonos, Thomas Maccarone, D. Stern, W. Zhang

Research output: Contribution to conferencePaper


An exciting result from Fermi is the detection of star-forming galaxies at GeV energies, but the relative contributions of various radiative processes to the gamma-ray signal remain uncertain. NuSTAR observations of NGC 253 in the hard X-ray band (10-30 keV) enable the most sensitive search to date for diffuse inverse Compton emission in that bandpass, which in turn will constrain the role of hadronic and leptonic interactions in producing the GeV emission. We present the latest results from detailed broadband spectral modeling of the nearby starburst galaxy NGC 253 from keV to TeV energies in light of new observations from NuSTAR.
Original languageEnglish
StatePublished - Jan 2015


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