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Researcher Evidence Record

K. Takada

This bounded record lists 44 Pith paper rows and 0 imported work rows attributed to this corpus identity. The enumerated, non-disputed paper rows include gr-qc, cond-mat.supr-con, astro-ph.HE work dated 2003 to 2026. The record describes sources and coverage; it makes no judgment about the person.

Compiled coverage vector

Measured lane counts only. Not a trust score or person verdict.

Enumerated paper scope: 6 fields (gr-qc, cond-mat.supr-con, astro-ph.HE, +3 more) · 2003-2026 sources: authors, author_identifiers · paper_authors · author_works · current_verdicts · cited_works

A sourced case file for attributed work. It is neither a profile score nor a verdict about this researcher.

Attributed works

A bounded ledger from the Pith paper and imported-work queries. Counts and source confidence stay with each work.

  1. 2026 Pith paper

    GWTC-5.0: Tests of General Relativity

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1574
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  2. 2026 Pith paper

    Sub-Torque-Balance Upper Limits on Continuous Gravitational Waves from Scorpius X-1

    astro-ph.HE provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1581
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  3. 2026 Pith paper

    GWTC-5.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation

    astro-ph.CO provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1564
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 6 pith inbound references from cited_work_pith_inbound_counts
  4. 2026 Pith paper

    GWTC-5.0: Population Properties of Merging Compact Binaries

    astro-ph.HE provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1566
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 2 external cited by from pith
    • 22 pith inbound references from cited_work_pith_inbound_counts
  5. 2026 Pith paper

    GWTC-5.0: Observations from the Second Part of the Fourth LIGO-Virgo-KAGRA Observing Run and Updates to the Gravitational-Wave Transient Catalog

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1578
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 28 pith inbound references from cited_work_pith_inbound_counts
  6. 2026 Pith paper

    GWTC-5.0: Methods for Identifying and Characterizing Gravitational-wave Transients

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1573
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 6 pith inbound references from cited_work_pith_inbound_counts
  7. 2026 Pith paper

    GWTC-5.0: An Introduction to Version 5.0 of the Gravitational-Wave Transient Catalog

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1574
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 16 pith inbound references from cited_work_pith_inbound_counts
  8. 2026 Pith paper

    Open Data from LIGO, Virgo, and KAGRA through the Second Part of the Fourth Observing Run

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1562
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 2 pith inbound references from cited_work_pith_inbound_counts
  9. 2026 Pith paper

    GW240925 and GW250207: Astrophysical Calibration of Gravitational-wave Detectors

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    backfill
    Printed name
    K. Takada
    Author position
    1587
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 2 pith inbound references from cited_work_pith_inbound_counts
  10. 2026 Pith paper

    Searches for Binary Mergers with Sub-solar Mass Components in Data from the First Part of LIGO--Virgo--KAGRA's Fourth Observing Run

    astro-ph.HE provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1579
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 3 pith inbound references from cited_work_pith_inbound_counts
  11. 2026 Pith paper

    Narrowband searches for continuous gravitational waves from known pulsars in the first two parts of the fourth LIGO--Virgo--KAGRA observing run

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1575
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 2 pith inbound references from cited_work_pith_inbound_counts
  12. 2026 Pith paper

    Searches for Continuous Gravitational Waves from Supernova Remnants in the first part of the LIGO-Virgo-KAGRA Fourth Observing run

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1518
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  13. 2026 Pith paper

    GWTC-4.0: Tests of General Relativity. III. Tests of the Remnants

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1530
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 32 pith inbound references from cited_work_pith_inbound_counts
  14. 2026 Pith paper

    GWTC-4.0: Tests of General Relativity. II. Parameterized Tests

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1535
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 32 pith inbound references from cited_work_pith_inbound_counts
  15. 2026 Pith paper

    GWTC-4.0: Tests of General Relativity. I. Overview and General Tests

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1531
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 36 pith inbound references from cited_work_pith_inbound_counts
  16. 2025 Pith paper

    Constraints on gravitational waves from the 2024 Vela pulsar glitch

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1519
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  17. 2025 Pith paper

    Directional Search for Persistent Gravitational Waves: Results from the First Part of LIGO-Virgo-KAGRA's Fourth Observing Run

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1517
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 4 pith inbound references from cited_work_pith_inbound_counts
  18. 2025 Pith paper

    GW250114: testing Hawking's area law and the Kerr nature of black holes

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1534
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 66 pith inbound references from cited_work_pith_inbound_counts
  19. 2025 Pith paper

    Directed searches for gravitational waves from ultralight vector boson clouds around merger remnant and galactic black holes during the first part of the fourth LIGO-Virgo-KAGRA observing run

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1521
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 2 pith inbound references from cited_work_pith_inbound_counts
  20. 2025 Pith paper

    GW230814: investigation of a loud gravitational-wave signal observed with a single detector

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1535
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 12 pith inbound references from cited_work_pith_inbound_counts
  21. 2025 Pith paper

    GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation

    astro-ph.CO provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1524
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 30 pith inbound references from cited_work_pith_inbound_counts
  22. 2025 Pith paper

    Upper Limits on the Isotropic Gravitational-Wave Background from the first part of LIGO, Virgo, and KAGRA's fourth Observing Run

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1524
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 15 pith inbound references from cited_work_pith_inbound_counts
  23. 2025 Pith paper

    GWTC-4.0: Updating the Gravitational-Wave Transient Catalog with Observations from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run

    gr-qc provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1537
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    • 171 external cited by from pith
    • 206 pith inbound references from cited_work_pith_inbound_counts
  24. 2025 Pith paper

    Open Data from LIGO, Virgo, and KAGRA through the First Part of the Fourth Observing Run

    gr-qc provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1520
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 0 external cited by from pith
    • 37 pith inbound references from cited_work_pith_inbound_counts
  25. 2025 Pith paper

    All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA Observing run

    gr-qc provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1525
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    • 2 pith inbound references from cited_work_pith_inbound_counts
  26. 2025 Pith paper

    GW231123: a Binary Black Hole Merger with Total Mass 190-265 $M_{\odot}$

    astro-ph.HE provisional current review present

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    1524
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: a current Pith review exists.
    Citation counts
    • 7 external cited by from pith
    • 61 pith inbound references from cited_work_pith_inbound_counts
  27. 2009 Pith paper

    Magnetic anomalies of hydrous cobaltate compound Na_x(H_3O)_zCoO_2 \cdot yH_2O detected by NMR and NQR measurements

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    5
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  28. 2005 Pith paper

    Anisotropic Behavior of Knight Shift in Superconducting State of Na_xCoO_2yH_2O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    8
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  29. 2005 Pith paper

    Valence and Na content dependences of superconductivity in NaxCoO2.yH2O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    6
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  30. 2005 Pith paper

    Superconducting phase diagram of NaxCoO2.yH2O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    2
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  31. 2005 Pith paper

    $^{23}$Na NMR Study of Layered Superconductor $Na_xCoO_2- yH_2O$

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    7
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  32. 2004 Pith paper

    Weak Magnetic Order in the Bilayered-hydrate Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O Structure Probed by Co Nuclear Quadrupole Resonance - Proposed Phase Diagram in Superconducting Na$_x$CoO$_{2} \cdot$ $y$H$_2$O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    6
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  33. 2004 Pith paper

    Correlation between Tc and Lattice Parameters of Novel Superconducting NaxCoO2 yH2O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    2
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  34. 2004 Pith paper

    Unconventional superconductivity in NaxCoO2 yH2O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    2
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  35. 2004 Pith paper

    Evidence of nodal superconductivity in Na_0.35CoO2-1.3H_2O: a specific heat study

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    6
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  36. 2004 Pith paper

    Correlation between Superconducting Transition Temperature $T_c$ and Increase of Nuclear Spin-Lattice Relaxation Rate Devided by Temperature $1/T_1T$ at $T_c$ in the Hydrate Cobaltate Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    6
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  37. 2004 Pith paper

    Laser-excited ultrahigh-resolution photoemission spectroscopy of NaxCoO2.yH2O:Evidence for pseudogap formation

    cond-mat.str-el provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    9
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  38. 2004 Pith paper

    Determination of The Spin Contributed Knight Shift in $Na_{0.35} Co O_2 \cdot 1.3 H_2 O$

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    4
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  39. 2003 Pith paper

    Bulk Electronic structure of Na$_{0.35}$CoO$_{2}$.1.3H$_{2}$O

    cond-mat.mtrl-sci provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    18
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  40. 2003 Pith paper

    The role of the water molecules in novel superconductor, Na$_{0.35}$CoO$_{2}\cdot$1.3H$_{2}$O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    2
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  41. 2003 Pith paper

    Effect of Na content and hydration on the excitation spectrum of the cobaltite Na_xCoO_2 yH_2O

    cond-mat.str-el provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    7
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  42. 2003 Pith paper

    Unconventional Superconductivity and Nearly Ferromagnetic Spin Fluctuations in Na$_x$CoO$_2$$\cdot y$H$_2$O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    7
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  43. 2003 Pith paper

    Specific heat of unconventional superconductivity in NaxCoO2-yH2O

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    5
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.
  44. 2003 Pith paper

    Possible Spin-triplet Superconductivity in NaxCoO2yH2O - 59Co NMR Study

    cond-mat.supr-con provisional measured, no current review

    Sources and evidence
    Authorship source
    arxiv_oai
    Printed name
    K. Takada
    Author position
    9
    Identity state
    provisional
    Source confidence
    0.7
    Review coverage
    Measured: no current Pith review exists.
    Citation counts
    No source count is attached to this work row.

Evidence apparatus

The machinery behind this record. Every lane states whether Pith measured it, did not query it, could not reach it, or withheld it.

LaneStateObservedBoundary and source
identity Measured 2 Canonical identity row plus public typed identifiers.
source=authors, author_identifiers
papers Measured 44 of 44 bounded rows Rows attributed to this author UUID in the Pith corpus.
source=paper_authors
works Measured zero 0 of 0 bounded rows Imported works not duplicated by the paper ledger.
source=author_works
reviews Measured 23 of 44 bounded rows Coverage count only. No review outcome is projected onto the person.
source=current_verdicts
citations Measured 22 of 44 bounded rows Counts remain itemized by work and source.
source=cited_works
coauthors Measured 50 of 44 bounded rows Shared-work edges from admitted paper rows.
source=paper_authors
account Unavailable No public count of 1 bounded rows Account metadata is separate from corpus evidence.
source=users.author_id
Public identity sources
  • name variant
    K. Takada
    backfill
    confidence 0.6
Enumerated research scope

Fields and dates come only from enumerated, non-disputed Pith paper rows. They do not claim career completeness.

  • gr-qc20 rows
  • cond-mat.supr-con15 rows
  • astro-ph.HE4 rows
  • astro-ph.CO2 rows
  • cond-mat.str-el2 rows
  • cond-mat.mtrl-sci1 rows
  • 20036 rows
  • 20047 rows
  • 20054 rows
  • 20091 rows
  • 202511 rows
  • 202615 rows
Shared-work index
Record scope

The work queries are bounded. Missing rows may mean measured zero, an unavailable source, a query that did not run, or private data that Pith withheld. The lane table keeps those cases separate.

Paper findings remain attached to papers. They do not become findings about this researcher.