{
  "abstract": "Scintillation arcs are sensitive probes of multipath propagation, offering a window into the distribution of scattering material in the interstellar medium. Contrary to the common observational finding that individual pulsars exhibit only a limited range of scintillation arc morphologies, we report that PSR B0355+54, observed simultaneously at 2.25/8.60 GHz with the Shanghai Tianma Radio Telescope, displays nearly the full range of known arc patterns, many of which evolve rapidly. Across 54 observations from 2020 to 2026, we detect scintillation arcs in 53/53 usable observations at 2.25 GHz and 33/49 at 8.60 GHz. At 2.25 GHz, the secondary spectra exhibit five broad morphological types: forward arcs, inverted arclets, diffuse arcs, diffuse power, and irregular structures, with prominent displaced arclets appearing in several observations. In contrast, the 8.60-GHz spectra are generally dominated by faint forward arcs. Despite these marked morphological differences, the scaled curvatures and their annual variations agree between the two frequencies, showing that both trace the same dominant scattering screen at a fractional distance of $s=0.069^{+0.015}_{-0.014}$ near the pulsar, further supporting a possible association with the H ii region Sh 2-205. Simulations show that this diversity can arise from variations in the scattered-image distribution within this screen, while brightness reconstructions at 2.25 GHz resolve localized structure down to ∼0.02 mas. Tracking four arclets over 10 h at 8.60 GHz, including two displaced arclets, reveals a common evolutionary trend consistent with the line of sight sweeping across small-scale scattering structure, helping explain the rapid arc evolution.",
  "abstract_shown": true,
  "affiliations": [
    "Shanghai Astronomical Observatory, Chinese Academy of Sciences , Shanghai 200030 ,",
    "School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049 ,",
    "State Key Laboratory of Radio Astronomy and Technology, Shanghai Astronomical Observatory, Chinese Academy of Sciences , Shanghai 200030 ,",
    "School of Physical Science and Technology , ShanghaiTech University, Shanghai 201210 ,",
    "School of Information Engineering, Sanming University , Sanming 365004 ,",
    "South-Western Institute for Astronomy Research , Yunnan University, Kunming 650500 ,",
    "School of Physics Department of Astronomy, , Peking University, Beijing 100871 ,",
    "Kavli Institute for Astronomy and Astrophysics , Peking University, Beijing 100871 ,",
    "State Key Laboratory of Radio Astronomy and Technology , Xinjiang Astronomical Observatory, CAS, 150 Science 1-Street, Urumqi, 830011 ,",
    "Xinjiang Key Laboratory of Radio Astrophysics , 150 Science 1-Street, Urumqi 830011 ,",
    "School of Optoelectronic Information Engineering , Hubei University of Education, Wuhan 430205 ,",
    "Institute of Astronomy and High Energy Physics , Hubei University of Education, Wuhan 430205 ,",
    "Yunnan Observatories, Chinese Academy of Sciences , Kunming 650011 ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Zhen-Long Liao"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Zhen Yan"
    },
    {
      "affs": [
        0,
        1,
        2,
        3
      ],
      "name": "Zhi-Qiang Shen"
    },
    {
      "affs": [
        4
      ],
      "name": "Rui Wang"
    },
    {
      "affs": [
        5
      ],
      "name": "Xun Shi",
      "orcid": "0000-0003-2076-4510"
    },
    {
      "affs": [
        6,
        7
      ],
      "name": "Ke-Jia Lee"
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    {
      "affs": [
        8,
        9
      ],
      "name": "Ju-Mei Yao"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Xiao-Wei Wang"
    },
    {
      "affs": [
        10,
        11
      ],
      "name": "Zhi-Peng Huang"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Kuo Liu"
    },
    {
      "affs": [
        12
      ],
      "name": "Yong-Hua Xu",
      "orcid": "0000-0001-5662-6254"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Chu-Yuan Zhang"
    },
    {
      "affs": [
        0,
        3
      ],
      "name": "Fan Yang"
    },
    {
      "affs": [
        0
      ],
      "name": "Yang-Yang Lin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5qkrhjzc7k3jj.bib",
  "cited_by": 0,
  "doi": "10.1093/mnras/stag1994",
  "fulltext_url": null,
  "id": "5qkrhjzc7k3jj",
  "issns": [
    "0035-8711",
    "1365-2966"
  ],
  "landing_url": "https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag1994/8965453",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
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  "pdf_url": "https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stag1994/72259405/stag1994.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": "Oxford University Press (OUP)",
  "ris": "https://research.draconitic.com/paper/5qkrhjzc7k3jj.ris",
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    {
      "first_seen": "2026-10-30T12:18:17Z",
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Pulsars and Gravitational Waves Research",
      "subfield": "high-energy-astrophysics"
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  ],
  "title": "PSR B0355+54: An Unexpected Compendium of Nearly All Scintillation Arc Morphologies",
  "title_text": "PSR B0355+54: An Unexpected Compendium of Nearly All Scintillation Arc Morphologies",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:17Z",
  "url": "https://research.draconitic.com/paper/5qkrhjzc7k3jj",
  "venue": "Monthly Notices of the Royal Astronomical Society",
  "versions": []
}