The High Energy X-ray Probe (HEX-P): resolving the nature of Sgr A* flares, compact object binaries and diffuse X-ray emission in the Galactic Center and beyond - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Front.Astron.Space Sci. Année : 2023

The High Energy X-ray Probe (HEX-P): resolving the nature of Sgr A* flares, compact object binaries and diffuse X-ray emission in the Galactic Center and beyond

Kaya Mori
  • Fonction : Auteur
Gabriele Ponti
  • Fonction : Auteur
Matteo Bachetti
  • Fonction : Auteur
Arash Bodaghee
  • Fonction : Auteur
Jonathan Grindlay
  • Fonction : Auteur
Jaesub Hong
  • Fonction : Auteur
Roman Krivonos
  • Fonction : Auteur
Ekaterina Kuznetsova
  • Fonction : Auteur
Shifra Mandel
  • Fonction : Auteur
Antonio Rodriguez
  • Fonction : Auteur
Giovanni Stel
  • Fonction : Auteur
Shuo Zhang
  • Fonction : Auteur
Tong Bao
  • Fonction : Auteur
Franz Bauer
  • Fonction : Auteur
Benjamin Coughenour
  • Fonction : Auteur
Javier A Garcia
  • Fonction : Auteur
Julian Gerber
  • Fonction : Auteur
Brian Grefenstette
  • Fonction : Auteur
Amruta Jaodand
  • Fonction : Auteur
Bret Lehmer
  • Fonction : Auteur
Kristin Madsen
  • Fonction : Auteur
Melania Nynka
  • Fonction : Auteur
Peter Predehl
  • Fonction : Auteur
Ciro Salcedo
  • Fonction : Auteur
Daniel Stern
  • Fonction : Auteur
John Tomsick
  • Fonction : Auteur

Résumé

HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<10"$ FWHM) and broad spectral coverage (0.2-80 keV) with an effective area far superior to current facilities' (including XMM-Newton and NuSTAR). These capabilities will enable revolutionary new insights into a variety of important astrophysical problems. We present scientific objectives and simulations of HEX-P observations of the Galactic Center (GC) and Bulge. We demonstrate the unique and powerful capabilities of the HEX-P observatory for studying both X-ray point sources and diffuse X-ray emission. HEX-P will be uniquely equipped to explore a variety of major topics in Galactic astrophysics, allowing us to (1) investigate broad-band properties of X-ray flares emitted from the supermassive black hole (BH) at Sgr A* and probe the associated particle acceleration and emission mechanisms; (2) identify hard X-ray sources detected by NuSTAR and determine X-ray point source populations in different regions and luminosity ranges; (3) determine the distribution of compact object binaries in the nuclear star cluster and the composition of the Galactic Ridge X-ray emission; (4) identify X-ray transients and measure fundamental parameters such as BH spin; (5) find hidden pulsars in the GC; (6) search for BH-OB binaries and hard X-ray flares from young stellar objects in young massive clusters; (7) measure white dwarf (WD) masses of magnetic CVs to deepen our understanding of CV evolution and the origin of WD magnetic fields; (8) explore primary particle accelerators in the GC in synergy with future TeV and neutrino observatories; (9) map out cosmic-ray distributions by observing non-thermal X-ray filaments; (10) explore past X-ray outbursts from Sgr A* through X-ray reflection components from giant molecular clouds.

Dates et versions

hal-04298425 , version 1 (21-11-2023)

Identifiants

Citer

Kaya Mori, Gabriele Ponti, Matteo Bachetti, Arash Bodaghee, Jonathan Grindlay, et al.. The High Energy X-ray Probe (HEX-P): resolving the nature of Sgr A* flares, compact object binaries and diffuse X-ray emission in the Galactic Center and beyond. Front.Astron.Space Sci., 2023, 10, pp.1292130. ⟨10.3389/fspas.2023.1292130⟩. ⟨hal-04298425⟩
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