CXOU J013651.1+154547: An Extremely Variable ULX in M74

Bibcode
2003HEAD....7.1736K
Krauss, M. I.; Kilgard, R. E.; Garcia, M. R.; Roberts, T. P.; Prestwich, A. H.
Bibliographical reference

American Astronomical Society, HEAD meeting #7, #17.36; Bulletin of the American Astronomical Society, Vol. 35, p.630

Advertised on:
3
2003
Number of authors
5
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We present an investigation into a newly discovered ultraluminous X-ray source (ULX) in M74, CXOU J013651.1+154547. It varies in luminosity by more than an order of magnitude (from 5 x 1038 to 1 x 1040 erg s-1) in only 30 minutes, and flares on a characteristic timescale of around 4000 s. It has neither a radio nor optical counterpart, which suggests that it resides in M74 and is not a background AGN. It most closely resembles Galactic microquasars, in particular GRS 1915+105, in its temporal variability and spectral components. However, CXOU J013651.1+154547 resides near several prominent OB associations, suggesting that it may be associated with recent star formation. We discuss the spectral, spatial, and temporal characteristics of this intriguing source in the context of known Galactic sources as well as other ULXs.
Type
Non-refereed

It may interest you

  • Non-refereed
    Study of basaltic asteroids through their phase curves
    Introduction Classified as type-V, the basaltic asteroids of the Main Belt (MB), for the most part, are connected to Vesta's dynamic family. However, since the discovery of the V-type asteroid (1459) Magnya in the outer MB, several new asteroids have been found in different regions, including V-types from inner regions not belonging to the Vesta
    Arcoverde, Plicida et al.

    Advertised on:

    9
    2024
    Bibcode
    2024EPSC...17..999A
    Citations
    0
  • Non-refereed
    New Robotic Telescope system progress towards critical design review
    The 4m class New Robotic Telescope (NRT) is an optical facility designed to revolutionize the rapid follow-up and classification of variable and transient objects. The project is at the stage where key systems are progressing through their detailed design phases, which presents a major engineering challenge for all project partners to manage design
    Copley, David et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13094E..3WC
    Citations
    0
  • Non-refereed
    Phase diversity application on the EST MCAO testbench
    Phase Diversity (PD) is a technique widely used to measure and compensate for Non-Common Path Aberrations (NCPA) in optical systems. Beyond its traditional applications, PD has found further uses in solar astrophysics, where it enhances image quality by processing multiple images to correct residual aberrations. In this work, we introduce a
    Rodriguez-Linares, Nicolas et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13097E..5OR
    Citations
    0