JACPOT XRB 2012-2013 status

JACPOT XRB is a Target of Opportunity project, to be triggered by a detection of an outburst with an X-ray satellite (RXTE, SWIFT, INTEGRAL or MAXI), or, for the white dwarf system, on an AAVSO alert. On receipt of an alert, we will immediately begin monitoring with the VLA (northern hemisphere) or ATCA (southern hemisphere), and on detection of radio emission, the VLBA (nothern hemisphere) or LBA (southern hemisphere) will begin its monitoring campaign.

In 2009-2010, we monitored a white dwarf (SS Cyg), a neutron star (Aql X-1), and a black hole (H1743-322). In 2010-2011, we monitored a black hole system (MAXI J1836-194), as our target neutron star proved (4U 1820-30) too faint for VLBA monitoring. For the 2012-2013 campaign, we triggered VLA observations of a black hole system (Swift J1745-26); however, high telescope demand prevented VLBA monitoring. We are currently allocated time to monitor a black hole source in the northern hemisphere and southern hemisphere during 2013-2014.

2012-2013 Northern Black Hole Status:
VLA-Only Trigger on Sep 2012 Flare of Swift J1745-26

  • 16-Sep-2012: Swift automatically triggers on detection of new transient, Swift J174510.8-262411 (Palmer et al., GCN 13774).
  • 16-Sep-2012: Based on INTEGRAL observations, Swift J1745-26 identified as a potential black hole transient (Vovk et al., ATel 4381).
  • 17-Sep-2011: JACPOT XRB triggered VLA observations successfully detect unresolved radio activity of 6.8 ± 0.1 and 6.2 ± 0.1 mJy, centred at 5.0 and 7.45 GHz, respectively (Miller-Jones et al., ATel 4394).
  • 18-Sep-2012: Swift/XRT discovers quasi-periodic oscillation, consistent with a black hole (Tomsick et al., ATel 4393).
  • 21-Sep-2012: Due to high telescope demand during Galactic parallax season preventing high-cadence observations, JACPOT XRB chose to not trigger VLBA observations. Multi-wavelength observations continue to trace dynamic broad-band spectral energy distribution.

2012-2013 Southern Black Hole Status:

2010-2011 Statuses:
Black Hole Triggered & Archived Here

2009-2010 Statuses:
All Triggered & Archived Here