{
  "id": "2310.01797",
  "version": "v1",
  "published": "2023-10-03T04:54:27.000Z",
  "updated": "2023-10-03T04:54:27.000Z",
  "title": "On the influence of shock-cloud interactions on the nonthermal X-ray emission from the supernova remnant RCW 86",
  "authors": [
    "Aya Bamba",
    "Hidetoshi Sano",
    "Ryo Yamazaki",
    "Jacco Vink"
  ],
  "comment": "10 pages, 27 figures, PASJ, in press",
  "categories": [
    "astro-ph.HE",
    "hep-ex"
  ],
  "abstract": "It is an open issue how the surrounding environment of supernova remnant shocks affect nonthermal X-rays from accelerated electrons, with or without interacting dense material. We have conducted spatially resolved X-ray spectroscopy of the shock-cloud interacting region of RCW 86 with XMM-Newton. It is found that bright soft X-ray filaments surround the dense cloud observed with 12CO and HI emission lines. These filaments are brighter in thermal X-ray emission, and fainter and possibly softer in synchrotron X-rays, compared to those without interaction. Our results show that the shock decelerates due to the interaction with clouds, which results in an enhancements of thermal X-ray emission. This could possibly also explain the softer X-ray synchrotron component, because it implies that those shocks that move through a low density environment, and therefore decelerate much less, can be more efficient accelerators. This is similar to SN 1006 and Tycho, and is in contrast to RX J1713.7-3946. This difference among remnants may be due to the clumpiness of dense material interacting with the shock, which should be examined with future observations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-10-03T04:54:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "supernova remnant rcw",
      "nonthermal x-ray emission",
      "shocks affect nonthermal x-rays",
      "remnant shocks affect nonthermal",
      "shock-cloud interactions"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}