{"id":"7c5f55bc-16c4-436d-8a5a-ac8a40a0d681","arxiv_id":"2508.09034","paper_version":1,"verdict":"UNVERDICTED","confidence":"LOW","novelty_score":5.0,"correctness_risk":"unknown","formal_verification":"none","parameter_count":0,"one_line_summary":"Two archival IceCube follow-ups of gravitational wave events: a combined multi-energy neutrino likelihood search and a first search using a >1 TeV cascade sample.","lead":"This paper describes two IceCube searches for neutrinos that could arrive from gravitational wave events detected by LIGO/Virgo/KAGRA. One search combines high- and low-energy neutrino samples in a single likelihood, and the other is the first to use a high-energy cascade sample.","discovery_kind":"extension","skeptic_critique":{"model":"deepseek-v4-flash","headline":"Central claim is unverifiable: supplied full text is an unrelated cs.CV manuscript, so the combined GeV–PeV likelihood and first TeV cascade analysis cannot be checked.","rationale":"The reader correctly flagged the implicit assumption that the two energy samples can be combined with consistent systematics, and that the new cascade sample's background is well understood. That is a real and load-bearing concern about the abstract's scientific content. However, the more immediate and decisive issue is that the supplied full text is not the IceCube paper at all; it is an unrelated robotics paper. This makes the central claim impossible to evaluate on the available evidence. I agree with the reader's UNVERDICTED verdict and low confidence. I do not see a reason to change the verdict, but I would emphasize that the missing full text is the primary blocker: no amount of abstract-level reasoning can settle whether the combined likelihood is correctly constructed or whether the cascade sample is viable. The proposed test—obtaining the actual manuscript and checking for the described analysis components—would resolve this directly. I therefore recommend UNCHANGED, keeping the reader's UNVERDICTED assessment.","tokens_in":2028,"tokens_out":1693,"duration_ms":21921,"concrete_test":"Retrieve the actual full text of arXiv:2508.09034 from arXiv (e.g., the PDF or source) and verify that it contains the IceCube analysis described in the abstract: a combined likelihood over the low-energy DeepCore sample and the high-energy track sample, plus a dedicated >1 TeV cascade sample with a quantified background model. If the retrieved text instead matches the cs.CV 'Spatial Traces' manuscript or lacks these components, the central claim remains unsupported and the appropriate verdict is UNVERDICTED.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The abstract claims a combined likelihood search using two IceCube datasets covers a few GeV to several PeV and that a >1 TeV cascade sample is used for the first time in GW follow-up. For this central claim to hold, the paper must actually present the combined likelihood, consistent background modeling, angular resolution, energy response, event selection, and the cascade sample's background estimate. None of this is present: the full text supplied with arXiv:2508.09034 is a completely different manuscript, 'Spatial Traces: Enhancing VLA Models with Spatial-Temporal Understanding' (arXiv:2508.09032v1, cs.CV). There is no body text, equations, figures, tables, or results for the IceCube analysis. Thus every substantive assertion beyond the abstract—including the key novelty of the cascade channel and the wide-energy coverage—rests on an unverified premise. The condition for the central claim to hold is the existence of a correctly implemented and characterized combined analysis; that condition is not established by the provided document.","agreement_with_reader":"partial"},"referee_report":{"model":"deepseek-v4-flash","summary":"The submission, arXiv:2508.09034 (astro-ph.HE), is advertised by its abstract as an IceCube analysis performing two archival follow-up searches for neutrinos from LIGO/Virgo/KAGRA gravitational-wave events in runs O1–O3. The abstract states that a combined likelihood is constructed from a high-energy track dataset and a low-energy track/cascade dataset to cover roughly a few GeV to several PeV, and that a second analysis introduces, for the first time, a >1 TeV neutrino-induced cascade sample as a new channel for GW-neutrino coincidence searches. The supplied full text, however, is not this manuscript. It is a computer-vision/robotics paper titled \"Spatial Traces: Enhancing VLA Models with Spatial-Temporal Understanding\" (arXiv:2508.09032v1, cs.CV). Consequently, the submitted document contains no methods, no equations, no event selections, no background estimates, no statistical treatment, no results, and no discussion for the claimed IceCube analyses. This referee report therefore cannot audit any of the paper's substantive claims.","tokens_in":2186,"tokens_out":2153,"duration_ms":23983,"significance":"If the intended analysis were present and correct, the contribution would be potentially significant for multimessenger astronomy: a single combined likelihood spanning from GeV to PeV energies would improve the reach of neutrino follow-up of GW events, and a >1 TeV cascade sample would add an independent event topology to such searches. The stated goal of extending GW-neutrino coincidence coverage to lower energies via DeepCore and to cascades above 1 TeV is scientifically motivated and would be useful to the community. However, none of this content is present in the submitted full text. There is no derivable result, no machine-checked proof, no reproducible code, and no falsifiable prediction that can be assessed. As submitted, the significance of the paper cannot be evaluated beyond the general interest of the announced program.","major_comments":[{"comment":"The full text supplied for arXiv:2508.09034 is an unrelated robotics manuscript, \"Spatial Traces: Enhancing VLA Models with Spatial-Temporal Understanding,\" whose arXiv tag at the end is 2508.09032v1 [cs.CV]. There is no IceCube analysis in the document: no combined likelihood, no event datasets, no background modeling, no angular/energy response, no trial-factor correction, and no results. The central claims in the abstract are therefore unsupported by any inspectable content. This is a load-bearing defect: the manuscript as submitted cannot be reviewed as an astroparticle physics paper. The authors should resubmit the correct full text; the present version requires rejection.","section":"Entire manuscript text"},{"comment":"Even reading only the abstract, the claim that the two neutrino datasets are combined into a single likelihood cannot be checked because the abstract provides no details on how the two datasets are jointly modeled. In particular, no information is given on whether the low-energy and high-energy samples have consistent background models, angular uncertainties, and energy resolutions, and how their relative normalization is handled. If the full text were present, this would be a detail to inspect; as submitted, the missing body makes the claim entirely unverifiable.","section":"Abstract, first two sentences"},{"comment":"The abstract states that the second analysis 'for the first time' uses a >1 TeV cascade sample for GW-neutrino searches. This novelty claim is not accompanied by any description of the cascade sample, its event selection, its background rate, or its expected sensitivity. Without these details, the novelty and performance claims cannot be assessed. If the body had been included, this would be a central technical point; in the current submission it is absent.","section":"Abstract, third sentence"}],"minor_comments":[{"comment":"The abstract does not state the number of GW events analyzed, the number of neutrino events retained, the trial factors, or any quantitative result (upper limits, p-values, significances). For a search paper these would normally be in the abstract or at least in the body. This is immaterial relative to the missing full text but would need to be addressed in a future complete submission.","section":"Abstract, general"},{"comment":"The footer 'arXiv:2508.09032v1 [cs.CV] 12 Aug 2025' confirms that the uploaded PDF corresponds to a different arXiv submission. This is a submission/pipeline error that should be corrected by the authors.","section":"End of supplied text"}],"recommendation":"reject","confidential_remarks":"For the editor: This appears to be a case of a wrong file being uploaded with the arXiv submission. The abstract describes a plausible and interesting IceCube analysis, but the full text is a completely unrelated cs.CV paper. There is no technical content to review. The appropriate action is to reject the current submission and invite the authors to resubmit the correct manuscript. If the correct paper is provided, I would be willing to review it on its merits."},"author_rebuttal":null,"desk_editor":{"model":"deepseek-v4-flash","letter":"Colleague,\n\nYou should know two things about arXiv:2508.09034. The abstract describes a sensible IceCube search: a combined likelihood over high-energy tracks and low-energy DeepCore events for GW follow-up, from a few GeV to several PeV, plus a new >1 TeV cascade sample. The claims are modest and consistent with the collaboration's prior work. The second thing: the full text we received is an entirely different paper about robotics. So whatever is in the actual submission, we have no body to audit.\n\nWhat is actually new: the combined likelihood over two datasets that were previously used independently, and the first use of the >1 TeV cascade sample in GW follow-ups. Both are incremental but legitimate. They extend the existing archival follow-up program, not open a new channel. The abstract is honest about that — it cites the earlier independent analyses and presents these as improvements in coverage.\n\nWhat the paper does well, based on abstract alone: the writing is clear. It specifies the energy ranges, the event types, and the archival data. There is no overselling. The authors explicitly say they are following up archival GW events, not claiming a detection. That is the right framing.\n\nWhere the soft spots are: we cannot verify any of the substance. There is no systematics treatment, no trial factor handling, no background rates, no event numbers in the abstract. That is normal for an abstract; the actual paper presumably has these. But the supplied full text is the robotics manuscript, so I cannot tell you whether the combined likelihood is correctly implemented or whether the cascade sample's background is under control. That is a pipeline failure, not evidence against the paper. The reader's low soundness score is an artifact of what was sent to us, not a judgment on the work. The condition for the central claim to hold — a properly implemented combined analysis — is unverified, but there is nothing in the abstract that suggests it fails.\n\nVerdict: this deserves a serious referee. If the real manuscript delivers what the abstract promises, it is a useful incremental contribution to multimessenger neutrino astronomy. I would not cite it in the next year unless I were working directly on IceCube follow-ups, but I would bring it to a reading group if someone is tracking GW-neutrino searches. Send it to peer review; desk rejection would be wrong just because our copy got mangled.\n\nBest.","headline":"A plausible IceCube follow-up paper whose abstract is clear; the attached full text is an unrelated robotics manuscript, so the analysis itself can't be checked from what we have.","tokens_in":2716,"tokens_out":1888,"would_cite":false,"duration_ms":21021,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"deepseek-v4-flash","headline":"This paper reports two follow-up analyses that search for neutrinos in coincidence with gravitational-wave events, combining IceCube datasets to cover energies from a few GeV to several PeV and introducing a new >1 TeV cascade sample.","keywords":["IceCube","neutrinos","gravitational waves","multimessenger astronomy","likelihood analysis","DeepCore","cascade events","LIGO/Virgo/KAGRA"],"falsifier":"Run the combined likelihood on many scrambled or off-time sky locations with no injected signal and check whether the reported p-values follow a uniform distribution; any significant excess would indicate that the background or systematics models of the two datasets are mismatched.","tokens_in":1885,"feed_emoji":"🔭","tokens_out":3679,"duration_ms":40758,"temperature":0.7,"pith_summary":"The paper aims to broaden the multimessenger net around gravitational-wave (GW) events by extending neutrino searches across a wider energy range. The first analysis combines two previously separate IceCube datasets—high-energy tracks and low-energy tracks/cascades—into a single likelihood, covering neutrino energies from a few GeV to several PeV. The second analysis introduces a neutrino-induced cascade sample above about 1 TeV, used for the first time in a GW coincidence search. If successful, these analyses offer more complete neutrino coverage of GW events and set the stage for real-time follow-up observations.","feed_headline":"Two searches widen neutrino-GW coverage from GeV to PeV","feed_subtitle":"IceCube combines low- and high-energy samples and debuts a TeV cascade channel for gravitational-wave follow-up.","key_machinery":"The central object is the combined likelihood: a joint model of spatial, temporal, energy, and background terms for the two IceCube datasets, evaluated against each GW event's sky localization. The key mechanism in the second analysis is the >1 TeV cascade sample, which captures neutrino-induced electromagnetic showers with good energy reconstruction but comparatively poor directional resolution, newly applied to GW coincidence searches.","core_discovery":"The authors claim that a combined likelihood search over IceCube's high-energy track sample and low-energy DeepCore track/cascade sample can coherently test neutrino emission from GW events across a six-decade energy range. They further claim that a new cascade sample with events above roughly 1 TeV can be used for the first time in such searches, adding independent sensitivity to neutrino-induced showers that track-only analyses would miss. The paper presents results from both analyses and argues they improve coverage for LIGO/Virgo/KAGRA runs O1 through O3, with prospects for real-time operation.","pith_inferences":["The claimed GeV-to-PeV sensitivity rests on the two samples' background models and detector responses being consistent in the overlap region; any systematic mismatch there could bias the combined likelihood, a point the abstract does not address.","The same multi-sample combination could be extended to other transient classes, such as fast radio bursts or gamma-ray bursts, where wide energy coverage is also valuable.","A natural test of the approach is to apply the combined likelihood to off-time or scrambled-sky data and verify that the background-only p-value distribution is uniform; this would validate the systematic control without requiring a real GW signal.","If the >1 TeV cascade sample proves stable, it could be added to existing real-time neutrino alert systems, increasing the multimessenger discovery potential."],"forward_implications":["A single search can test GW events for neutrino emission across a few GeV to several PeV, rather than running separate low- and high-energy analyses.","The >1 TeV cascade channel adds events that track-based searches would not detect, increasing the chance of catching a neutrino signal.","The combined likelihood could be run in real time, enabling rapid electromagnetic follow-up of GW events with neutrino alerts.","The two analyses, together, reduce the chance that a neutrino signal is missed because it falls between the energy bands of separate instruments.","The results establish a template for combining multiple IceCube samples in future multimessenger searches."],"supporting_citations":[],"fun_headline_variants":["IceCube merges GeV and PeV neutrino data for GW event search","GeV-to-PeV neutrino search for GW events debuts cascade channel","First TeV cascade search joins IceCube GW follow-up","Wide-energy neutrino-GW search debuts with combined IceCube samples","Combined GeV-PeV neutrino samples boost GW event follow-up"],"cache_read_input_tokens":2816,"weakest_assumption_plain":"The low- and high-energy samples can be modeled together in one likelihood without systematic mismatches in background rate, angular resolution, or energy response, so the claimed GeV-to-PeV sensitivity is not overstated.","fun_headline_variants_meta":{"raw":{"variants":["IceCube merges GeV and PeV neutrino data for GW event search","GeV-to-PeV neutrino search for GW events debuts cascade channel","First TeV cascade search joins IceCube GW follow-up","Wide-energy neutrino-GW search debuts with combined IceCube samples","Combined GeV-PeV neutrino samples boost GW event follow-up"]},"model":"deepseek-v4-flash","effort":"low","cost_usd":0.001286,"raw_usage":{"total_tokens":5082,"prompt_tokens":726,"completion_tokens":4356,"prompt_tokens_details":{"cached_tokens":256},"prompt_cache_hit_tokens":256,"prompt_cache_miss_tokens":470,"completion_tokens_details":{"reasoning_tokens":4265}},"tokens_in":470,"tokens_out":4356,"duration_ms":28715,"temperature":1.0,"reasoning_tokens":4265,"cache_read_input_tokens":256,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-08-05T21:14:46.760121+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":"Run the combined likelihood on many scrambled or off-time sky locations with no injected signal and check whether the reported p-values follow a uniform distribution; any significant excess would indicate that the background or systematics models of the two datasets are mismatched.","supporting_citations":[],"review_version":1}