What does this research mean for the field?

A sample of 47 tidal disruption events is statistically insufficient to measure the COCM power spectrum, demonstrating that sparse TDE tracers cannot probe P(k_COCM) and that larger catalogs are required. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This analysis aims to investigate the effectiveness of tidal disruption events (TDEs) as tracers for cosmological structures using a specific analytical method.

June 1, 2026Open Access

NT29: eROSITA-RU Tidal Disruption Events as COCM P(k) Tracers — Preliminary Route 3 Analysis

Key Points

This analysis aims to investigate the effectiveness of tidal disruption events (TDEs) as tracers for cosmological structures using a specific analytical method.
Applied the COCM Route 3 analysis protocol to a sample of 47 confirmed TDEs.
Employed a Landy-Szalay cosine-kernel estimator with random catalogues matching the survey geometry.
Measured density fluctuations P(k_COCM) to assess statistical reliability.
Obtained I = P(2k_COCM)/P(k_COCM) = 1.125 with e_I = 0.217, indicating a point estimate.
P(k_COCM) < 0 showed that 47 sources are insufficient for a statistically reliable measurement.
Confirmed that a larger sample from the full DR1 cluster catalogue is necessary for significant measurements.

Abstract

This note applies the COCM Route 3 analysis protocol of NT28 to the eROSITA-RU tidal disruption event sample of Zhang et al. (2026): 47 confirmed TDEs at z in 0. 05, 0. 8 in the eastern Galactic hemisphere. Using a Landy-Szalay cosine-kernel estimator with random catalogues matching the survey geometry, we obtain I = P (2kCOCM) /P (kCOCM) = 1. 125 and eI = (I/1910) ^ (1/4. 86) = 0. 217 (point estimate only). However, P (kCOCM) 0) remains Ab (Abierto). The analysis establishes the Landy-Szalay protocol for TDE tracers and confirms that the full DR1 cluster catalogue of NT28 (12, 247 sources) is the correct path to a significant I measurement. Motivación observacional: Arcodia et al. 2021 (QPEs), Baldini et al. 2026 (QPEs + mini-flares), ESA/Hubble 2026 (M88 órbita elíptica).

NT29: eROSITA-RU Tidal Disruption Events as COCM P(k) Tracers — Preliminary Route 3 Analysis

Key Points

Abstract

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