XMM-Newton Large Programme Details



PROPOSAL OVERVIEW
Proposal Title X-ray-UV-optical reverberation of low accretion rate and low mass AGN NGC4395
Proposal Category Active Galactic Nuclei, Quasars, BL-Lac Objects and Tidal Disruption Events
Proposal Type UNDEFINED
Proposal Id 082461
Number of Observations 4
Total exposure time (ks) 452

PI DETAILS
PI Prof Ian McHardy
Institute University of Southampton
Country UNITED KINGDOM

CO-INVESTIGATORS
Name Country
A. Young UNITED KINGDOM
D. Emmanoulopoulos UNITED KINGDOM
L. Miller UNITED KINGDOM

ABSTRACT
We present a coordinated 3-themed program to investigate the apparently discrepant inner source geometry of the very low accretion rate (mdot) and very low mass AGN NGC4395 to determine how source structure depends on mdot. With EPIC X-rays we will, via X-ray reverberation, determine whether the X-ray size really is x10 larger than for higher mdot Seyferts, perhaps indicating a transition to jet dominated X-ray emission. With EPIC and OM fast readout we will measure lags between X-ray and UV and U-bands to determine whether, unlike in higher mdot AGN, the inner accretion disc does not obscure the outer accretion disc but allows direct X-ray illumination to produce UV/optical variations. Finally, from X-ray iron line spectra, we will measure the inner radius of the disc.

PAPERS
Authors marked in red are (co-)investigators in the proposal

Classification of papers are:
- CLASS 1:   papers that present specific XMM-Newton observations
- CLASS 2: papers that refer to published XMM-Newton results with complementary observations, follow-up analysis, or theoretical analysis
- CLASS 3: further deliveries which resulted from the program and which are made available to the community (e.g. source catalogues, processed images or spectra in public data base)
- CLASS 4: comments and suggestions from PI

CLASS 1 (6 references)
  1. " Exploring the Link between the X-Ray Power Spectra and Energy Spectra of Active Galactic Nuclei "
    Yang, Haonan; Jin, Chichuan; Yuan, Weimin;
    2022 - The Astrophysical Journal, Volume 936, Issue 1, id.36, pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2022ApJ...936...36Y
    DOI: 10.3847/1538-4357/ac83bb

  2. " Hard X-Ray Flares and Spectral Variability in NGC 4395 ULX1 "
    Ghosh, Tanuman; Rana, Vikram; Bachetti, Matteo;
    2022 - The Astrophysical Journal, Volume 938, Issue 1, id.76, pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2022ApJ...938...76G
    DOI: 10.3847/1538-4357/ac8f8f

  3. " First detection of the outer edge of an AGN accretion disc: very fast multiband optical variability of NGC 4395 with GTC/HiPERCAM and LT/IO:O "
    McHardy, I. M.; Beard, M.; Breedt, E.; Knapen, J. H.; Vincentelli, F. M.; Veresvarska, M.; Dhillon, V. S.; Marsh, T. R.; Littlefair, S. P.; Horne, K.; Glew, R.; Goad, M. R.; Kammoun, E.; Emmanoulopoulos, D.;
    2023 - Monthly Notices of the Royal Astronomical Society, Volume 519, Issue 3, pp.3366-3382
    Number of Citations: 1
    https://ui.adsabs.harvard.edu/search/q=bibcode:2023MNRAS.519.3366M
    DOI: 10.48550/arXiv.2209.07538

  4. " The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions "
    Pan, Zeyang; Qu, Zhijie; Bregman, Joel N.; Liu, Jifeng;
    2024 - The Astrophysical Journal Supplement Series, Volume 271, Issue 2, id.62, 18 pp.
    Number of Citations: 1
    https://ui.adsabs.harvard.edu/search/q=bibcode:2024ApJS..271...62P
    DOI: 10.1093/mnras/stad3885

  5. " Investigating the nuclear properties of highly accreting active galactic nuclei with XMM-Newton "
    Laurenti, M.; Tombesi, F.; Vagnetti, F.; Piconcelli, E.; Guainazzi, M.; Vignali, C.; Paolillo, M.; Middei, R.; Bongiorno, A.; Zappacosta, L.;
    2024 - Astronomy & Astrophysics, Volume 689, id.A337, 14 pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2024A&A...689A.337L
    DOI: 10.1051/0004-6361/202449147

  6. " Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE "
    Ma, Xiangyao; Zhang, Yanxia; Zhang, Jingyi; Li, Changhua; Kang, Zihan; Li, Ji;
    2024 - The Astronomical Journal, Volume 168, Issue 5, id.210, 10 pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2024AJ....168..210M
    DOI: 10.3847/1538-4357/ad6e81