New X-Ray Transient in M31: CXOM31 J004258.6+411527

Bibcode
2007ATel.1115....1G
Galache, J. L.; Garcia, M. R.; Steeghs, D.; Torres, M. A. P.; Murray, S. S.; Primini, F. A.; Williams, B. F.
Bibliographical reference

The Astronomer's Telegram, #1115

Advertised on:
6
2007
Number of authors
7
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We report the discovery of a previously unseen X-ray point source detected in a 10ks observation starting on 2007-06-02.93 UT as part of our ongoing Chandra/HST M31 transient program. The source was detected by ACIS-I at coordinates RA(J2000) 00:42:58.63, Dec(J2000) +41:15:27.00, with centroid position errors of 0.05" and 0.04", respectively (subject to the standard bore-sight correction). The 0.6-5.0 keV spectrum can be modelled using an absorbed disk blackbody+powerlaw.
Type
Non-refereed
Black holes

It may interest you

  • Non-refereed
    joshspeagle/dynesty: v3.0.0
    This is major release with several infrastructural changes that will make future development of dynesty easier, as well as significant speedups. The release also deprecated some rarely used options. Major refactor of the code that makes it easier to add new samplers. Major speedup of the uniform sampler when sampling in parallel You can now provide
    Koposov, Sergey et al.

    Advertised on:

    10
    2025
    Bibcode
    2025zndo..17268284K
    Citations
    1
  • Non-refereed
    (163) Erigone, (302) Clarissa, and (752) Sulamitis as seen with JWST's NIRSpec
    Primitive asteroids in the Main Belt possess one of the most pristine inventories of materials in the Solar System. Main Belt primitive asteroids are particularly interesting due to clear evidence of phyllosilicates, i.e., silicates that have encountered liquid water and undergone chemical alteration. Since asteroids are thought to be likely
    Harvison, Brittany et al.

    Advertised on:

    9
    2025
    Bibcode
    2025epsc.conf.1004H
    Citations
    0
  • Non-refereed
    NEOMIR: project statut of ESA's space-based infrared mission for NEO detection and early warning
    To warn about potential asteroid or comet impacts, we must first observe and discover these objects through dedicated NEO surveys. Most current and planned surveys are ground-based and use visible light, but they face limitations like weather dependency, limited sky visibility, difficulty detecting at low galactic latitudes, and inability to
    Conversi, Luca et al.

    Advertised on:

    9
    2025
    Bibcode
    2025epsc.conf.1329C
    Citations
    0