New X-Ray Transient in M31: CXOM31 J004059.2+411551

Bibcode
2007ATel.1147....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, #1147

Advertised on:
7
2007
Number of authors
7
IAC number of authors
0
Citations
3
Refereed citations
2
Description
We report the discovery of a previously unseen X-ray point source detected in a 5ks observation starting on 2007-07-05.54 UT as part of our ongoing Chandra/HST M31 transient program. The source was detected on the edge of ACIS-S at coordinates RA(J2000) 00:40:59.2, Dec(J2000) +41:15:51.2, with centroid position errors of 2.4" and 3.0", respectively (subject to the standard bore-sight correction). The 0.7-3.0 keV spectrum is well modelled using an absorbed disk blackbody (after ascertaining that an added powerlaw made a negligible contribution to the flux).
Type
Non-refereed
Black holes

It may interest you

  • Non-refereed
    Co-phasing the distributed aperture of a Fizeau interferometer via photonic lanterns and machine learning
    The advantage of large optical telescopes from the ground for high-contrast direct imaging relies on achieving exquisite control of the incident optical wavefront. Since the exoplanet problem almost always has a bright star within a small field of view there are usually ample photons for measuring the atmospheric and telescopedistorted wavefront. A
    Padrón-Brito, Auxiliadora et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13094E..25P
    Citations
    0
  • Non-refereed
    Unveiling Chiron, an odd ice ball, with Webb: Ice and Gas Phases Revealed
    We present unprecedented findings on (2060) Chiron using James Webb Space Telescope (JWST) NIRSpec imaging and spectroscopy from cycle 1 GTO program 1273. Our study (Pinilla-Alonso et al. 2024 A&A Letter) marks the first detection of carbon dioxide (CO 2) and methane (CH 4) active outgassing and coma emission at heliocentric distances of ~18 au
    Pinilla-Alonso, Noemí et al.

    Advertised on:

    10
    2024
    Bibcode
    2024DPS....5640508P
    Citations
    0
  • Non-refereed
    Conceptual optical design of the infrared integral field spectropolarimeter for the European Solar Telescope
    The European Solar Telescope (EST), with its primary mirror of 4.2 diameter, will be the largest solar telescope available in Europe. EST will offer Integral Field Spectropolarimetry (IFS) by incorporating the EST spectropolariMeter Based on slicEr-mirrors for the near-infraRed (EMBER). This instrument is a high-resolution spectropolarimeter that
    Regalado Olivares, S. et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13100E..5FR
    Citations
    0