Pith Number

pith:YZN56E2A

pith:2026:YZN56E2AFZW5H7JFDALAW23Q7F

not attested not anchored not stored refs resolved

A New PSF Deconvolution Algorithm: Simultaneous Spatial Resolution Enhancement and Point Source Removal for Morphological Analysis of AGN Host Galaxies

Kazunori Matsuda, Ren Kawase, Takatoshi Shibuya

A deconvolution algorithm enhances the resolution of AGN host galaxy images to Hubble levels while cleanly removing the central point source.

arxiv:2605.13735 v2 · 2026-05-13 · astro-ph.GA · astro-ph.CO · astro-ph.IM

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\usepackage{pith}
\pithnumber{YZN56E2AFZW5H7JFDALAW23Q7F}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

We find that the spatial resolution of the host-galaxy images is improved to a level comparable to that of images from the Hubble Space Telescope and that the bright central point sources are removed.

C2weakest assumption

The point-source balance constraint based on the pixel-wise product I_sm × I_sp removes the point source without over- or under-subtraction while the smoothness and sparsity constraints suffice to separate components accurately in real data.

C3one line summary

A new deconvolution algorithm separates AGN host galaxies from central point sources via smoothness, sparsity, and a pixel-wise product balance constraint, achieving HST-comparable resolution on Subaru HSC data.

References

59 extracted · 59 resolved · 1 Pith anchors

[1] 2022, PASJ, 74, 247 2022

[2] Beck, A., & Teboulle, M. 2009, SIAM J. Imaging Sci., 2, 183 2009

[3] 2025, ApJ, 978, 74 2025

[4] 2026, ApJ, 997, 47 2026

[5] 2011, ApJ, 726, 57 2011

Receipt and verification

First computed	2026-05-18T02:44:16.520749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c65bdf13402e6dd3fd2518160b6b70f950ffa09b62b2f260da1d9aeb5d97e987

Aliases

arxiv: 2605.13735 · arxiv_version: 2605.13735v2 · doi: 10.48550/arxiv.2605.13735 · pith_short_12: YZN56E2AFZW5 · pith_short_16: YZN56E2AFZW5H7JF · pith_short_8: YZN56E2A

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YZN56E2AFZW5H7JFDALAW23Q7F \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c65bdf13402e6dd3fd2518160b6b70f950ffa09b62b2f260da1d9aeb5d97e987

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "951b9df5d7003d695dca69230c0b55b18f1b1b0f4beb0aa2f1ed19b4aaab10ca",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-13T16:13:20Z",
    "title_canon_sha256": "2fe251e1a7f039bb6d5eaf81a8a85777b0fa45d2924cf446a8a642772c91cad1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13735",
    "kind": "arxiv",
    "version": 2
  }
}