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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2108.00557 (astro-ph)
[Submitted on 1 Aug 2021]

Title:NuSTAR broad-band X-ray observational campaign of energetic pulsar wind nebulae in synergy with VERITAS, HAWC and Fermi gamma-ray telescopes

Authors:Kaya Mori, Hongjun An, Daniel Burgess, Massimo Capasso, Brenda Dingus, Joseph Gelfand, Charles Hailey, Brian Humensky, Kelly Malone, Reshmi Mukherjee, Nahee Park, Isaac Pope, Stephen Reynolds, Samar Safi-Harb, Jooyun Woo, Galactic TeV source collaboration
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Abstract:We report recent progress on the on-going NuSTAR observational campaign of 8 TeV-detected pulsar wind nebulae (PWNe). This campaign constitutes a major part of our NuSTAR study of some of the most energetic TeV sources in our Galaxy detected by VERITAS and HAWC. NuSTAR is the first focusing X-ray telescope operating above 10 keV in space with sub-arcminute angular resolution. Broad-band X-ray imaging and spectroscopy data, obtained by NuSTAR, allow us to probe sub-PeV electron populations through detecting synchrotron X-ray radiation. Our targets include PeVatron candidates detected by HAWC, the Boomerang nebula, PWNe crushed by supernova remnant shocks (or relic PWNe) and G0.9+0.1 in the Galactic Center. Using Fermi-LAT data and available TeV data, we aim to provide a complete, multi-wavelength view of a diverse class of middle-aged (~10-100 kyrs old) PWNe. Our NuSTAR analysis detected hard X-ray emission from the Eel and Boomerang PWNe and characterized their broad-band X-ray spectra most accurately. We plan to apply both time-evolution and multi-zone PWN models to multi-wavelength spectral energy distribution (SED) data over the radio, X-ray, GeV and TeV bands. In this proceeding, we will review our observational campaign and discuss the preliminary results for some PWNe.
Comments: Presented at the 37th International Cosmic Ray Conference (ICRC 2021)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:2108.00557 [astro-ph.HE]
  (or arXiv:2108.00557v1 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2108.00557

Submission history

From: Kaya Mori [view email]
[v1] Sun, 1 Aug 2021 23:16:21 UTC (2,653 KB)
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