23 | 07 | 2014
 
 
P1: Multiwavelength Studies of Low-Frequency Radio Transients PDF Print E-mail

PhD student: Yi-Jung Yang

Start Date: Jan 2009
End Date: Dec 2012 (last year funded out of non-EU sources)
Responsible Advisor: Rudy Wijnands (Amsterdam)
Co-Advisors: Tom Maccarone (Southampton), Jörn Wilms (FAU Erlangen-Nuremberg)

Traditionally, multiwavelength studies of black holes in Galactic X-ray binaries occur when X-ray monitoring instruments on satellites around the Earth discover a new X-ray transient or a new outburst of a recurrent transient. Such multiwavelength observations have yielded great insights into those systems and the physical processes involved in the accretion of matter onto black holes and the ejection events of highly relativistic gas which often occurs during accretion. However, our understanding is fully biased toward those systems which have been discovered in the X-rays. This situation will change in the near future with the commissioning of the Low Frequency Array (LOFAR) in the Netherlands, from 2009-2010, and subsequent full operations. Using LOFAR, a dedicated radio sky monitoring program will be performed which will cover a large fraction of the sky to search for variable and transient radio sources. It is expected that many radio transients will be discovered, a large fraction of which will be associated with accreting black holes in binary systems. Most probably, the radio emission will come from outflowing jets of matter during the accretion process.

Radio Transients with LOFARThe aim of the project is to obtain, analyze and interpret data obtained at higher wavelengths (from higher frequency radio data to X-ray or even gamma-rays) to get insight in the nature of these radio discovered transients. Some systems will be bright X-ray sources as well and will resemble the classical, X-ray discovered, accreting black holes; other systems will have significant less emission at high energies and they might be accreting black holes which are dominated by ejection of matter instead of accretion of matter. The confirmation of such such outflow dominated systems is a prime goal of the project. The adviser Dr. Wijnands is a world expert in the astrophysics of accreting black holes and in obtaining high energy data of transient systems. Data have already been approved using the XMM-Newton and RXTE satellites for the first radio transients discovered with LOFAR. The student will spend time visiting Dr. Maccarone at Southampton for help in correlating the radio and high-energy properties of the radio transients and for comparison with the X-ray discovered sources. Visits to Prof. Wilms at FAU are also planned to work on the spectral energy distributions(which for the first time go down to very low radio frequencies) of the discovered sources.

An overview talk on the current state  of the project as presented at the Collaboration Meeting in September 2010 in Istanbul can be found here.






Related publications

Refereed
  1. Yang, Y. J., Kong, A. K. H., Russell, D. M., Lewis, F., and Wijnands, R., 2012, Quiescent X-ray/optical counterparts of the black hole transient H 1705-250, MNRAS, 427, 2876 (ADS-Entry)
  2. Wijnands, R., Yang, Y. J., and Altamirano, D., 2012, The enigmatic black hole candidate and X-ray transient IGR J17091-3624 in its quiescent state as seen with XMM-Newton, MNRAS, 422, L91 (ADS-Entry)
  3. Russell, D. M., Miller-Jones, J. C. A., Maccarone, T. J., Yang, Y. J., Fender, R. P., and Lewis, F., 2011, Testing the Jet Quenching Paradigm with an Ultradeep Observation of a Steadily Soft State Black Hole, ApJ, 739, L19 (ADS-Entry)
  4. Russell, D. M., Yang, Y. J., Gladstone, J. C., Wiersema, K., and Roberts, T. P., 2011, New observations of ULX supershells, and their implications, Astronomische Nachrichten, 332, 371 (ADS-Entry)
  5. Tam, P. H. T., Hui, C.-Y., Huang, R. H. H., Kong, A. K. H., Takata, J., Lin, L. C. C., Yang, Y. J., Cheng, K. S., and Taam, R. E., 2010, Evidence for gamma-ray emission from the low-mass X-ray binary system FIRST J102347.6+003841, Apj, 724, 207-211, in press (ADS-Entry)
  6. Kong, A. K. H., Yang, Y. J., Yen, T.-C., Feng, H., and Kaaret, P., 2010, Swift Observations of the Ultraluminous X-ray Source Holmberg IX X-1, ApJ, 722, 1816 (ADS-Entry)
  7. Linares, M., Watts, A., Altamirano, D., Soleri, P., Degenaar, N., Yang, Y. J., Wijnands, R., Casella, P., Homan, J., Chakrabarty, D., Rea, N., Armas-Padilla, M., Cavecchi, Y., Kalamkar, M., Kaur, R., Patruno, A., and van der Klis, M., 2010, The Return of the Bursts: Thermonuclear Flashes from Circinus X-1, ApJ, 719, 84 (ADS-Entry)
  8. Altamirano, D., Cavecchi, Y., Patruno, A., Watts, A., Linares, M., Degenaar, N., Kalamkar, M., van der Klis, M., Rea, N., Casella, P., Armas Padilla, M., Kaur, R., Yang, Y. J., Soleri, P., and Wijnands, R., 2011, Timing of the first eclipsing accretion-powered millisecond X-ray pulsar, ApJ, 727, L18 (ADS-Entry)
Other

none yet available

Fast Communications
  1. Yang, Y. J., Curran, P., Kennea, J. A., and Kong, A. K. H., 2012, MAXI J1836-194 has returned to quiescence, ATel 4255 (ATel-Link)
  2. Kennea, J. A., Yang, Y. J., Altamirano, D., Evans, P. A., Krimm, H. A., Romano, P., Mangano, V., Curran, P., Yamaoka, K., and Negoro, H., 2012, MAXI J1305-704: Swift/XRT detection of dips, possible 1.5 hour period, ATel 4044 (ATel-Link)
  3. Yang, Y. J., Wijnands, R., and Kennea, J. A., 2012, Swift XRT and UVOT observations of renewed activity from MAXI J1836-194, ATel 3975 (ATel-Link)
  4. Degenaar, N., Yang, Y. J., and Wijnands, R., 2011, Swift detection of a type-I X-ray burst from Swift J1922.7-1716, ATel 3741 (ATel-Link)
  5. Wijnands, R., Yang, Y. J., Degenaar, N., Altamirano, D., Tudose, V., and Heinke, C. O., 2011, The transient IGR J17361-4441 in the globular cluster NGC 6388: an unusual very-faint transient X-ray binary or an outburst from an intermediate-mass black hole, ATel 3595 (ATel-Link)
  6. Linares, M., Altamirano, D., Watts, A., Strohmayer, T., Chakrabarty, D., Patruno, A., van der Klis, M., Wijnands, R., Casella, P., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Yang, Y. J., and Rea, N., 2011, RXTE detection of a thermonuclear burst from IGR J17498-2921: distance estimate and burst oscillations, ATel 3568 (ATel-Link)
  7. Kong, A. K. H., Yang, Y. J., and Wijnands, R., 2011, Lulin Optical Observations of MAXI J1659-152, ATel 3524 (ATel-Link)
  8. Russell, D. M., Lewis, F., Schreuder, L., Yang, Y. J., Wijnands, R., and Tripp, A., 2011, MAXI J1659-152 fading in optical, ATel 3517 (ATel-Link)
  9. Yang, Y. J., and Wijnands, R., 2011, MAXI J1659-152 has likely returned back into quiescence, ATel 3506 (ATel-Link)
  10. Yang, Y. J., and Wijnands, R., 2011, Further re-brightening of the black hole candidate MAXI J1659-152, ATel 3379 (ATel-Link)
  11. Yang, Y. J., and Wijnands, R., 2011, Re-brightening of the black hole candidate MAXI J1659-152, ATel 3339 (ATel-Link)
  12. Altamirano, D., Kalamkar, M., Yang, Y. J., Degenaar, N., Wijnands, R., Casella, P., Linares, M., Rea, N., Watts, A., Patruno, A., Armas-Padilla, M., Cavecchi, Y., van der Klis, M., and Kaur, R., 2011, Discovery of 1 Hz quasi-periodic oscillations in an RXTE observation of MAXI J1543-564, ATel 3334 (ATel-Link)
  13. Yang, Y. J., and Wijnands, R., 2011, Continued Swift monitoring of the black hole candidate MAXI J1659-152, ATel 3298 (ATel-Link)
  14. Yang, Y. J., Wijnands, R., and Russell, D. M., 2011, Swift XRT/UVOT monitoring of MAXI J1659-152 during its low luminosity phase, ATel 3249 (ATel-Link)
  15. Altamirano, D., Linares, M., van der Klis, M., Wijnands, R., Kalamkar, M., Casella, P., Watts, A., Patruno, A., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kaur, R., Yang, Y. J., and Rea, N., 2011, Discovery of 10 mHz quasi-periodic oscillations likely from IGR J17091-3624, ATel 3225 (ATel-Link)
  16. Linares, M., Altamirano, D., Watts, A., van der Klis, M., Wijnands, R., Patruno, A., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Yang, Y. J., Casella, P., and Rea, N., 2011, SAX J1747.0-2853: 'normal' thermonuclear bursts resumed, ATel 3217 (ATel-Link)
  17. Degenaar, N., Altamirano, D., Padilla, M. A., Kaur, R., Wijnands, R., and Yang, Y. J., 2011, Swift/XRT localization of the neutron star X-ray transient SAX J1806.5-2215, ATel 3202 (ATel-Link)
  18. Yang, Y. J., Wijnands, R., Degenaar, N., Russell, D. M., Altamirano, D., and Kalamkar, M., 2011, Swift XRT/UVOT follow-up of the Black Hole Candidate MAXI J1659-152 during a low luminosity state, ATel 3201 (ATel-Link)
  19. Altamirano, D., Kaur, R., Degenaar, N., Wijnands, R., Yang, Y. J., Armas-Padilla, M., and Strohmayer, T. and, Markwardt, C., 2011, Possible outburst in neutron star LMXB SAX J1806.5-2215, ATel 3193 (ATel-Link)
  20. Russell, D. M., Yang, Y. J., Degenaar, N., Wijnands, R., Patruno, A., Kaur, R., Armas Padilla, M., Lewis, F., and Armstrong, J. D., 2010, Monitoring of the likely optical counterpart of XTE J1728-295, ATel 2997 (ATel-Link)
  21. Yang, Y. J., Degenaar, N., Wijnands, R., Russell, D. M., Patruno, A., Kaur, R., and Armas Padilla, M., 2010, Swift/XRT follow-up of the X-ray transient XTE J1728-295 during its decaying phase, ATel 2991 (ATel-Link)
  22. Linares, M., Altamirano, D., Watts, A., van der Klis, M., Wijnands, R., Homan, J., Casella, P., Patruno, A., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Yang, Y. J., and Rea, N., 2010, Discovery of mHz QPOs and burst rate evolution in the active Terzan 5 neutron star transient, ATel 2958 (ATel-Link)
  23. Altamirano, D., Homan, J., Linares, M., Patruno, A., Yang, Y. J., Watts, A., Kalamkar, M., Casella, P., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Russell, D., Kaur, R., van der Klis, M., Rea, N., and Wijnands, R., 2010, The transient neutron star LMXB in the globular cluster Terzan 5 has turned into a Z-source, ATel 2952 (ATel-Link)
  24. Altamirano, D., Watts, A., Kalamkar, M., Homan, J., Yang, Y. J., Casella, P., Linares, M., Patruno, A., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kaur, R., van der Klis, M., Rea, N., and Wijnands, R., 2010, Discovery of 11 Hz burst oscillations from the 11 Hz Eclipsing Pulsar in Terzan 5, ATel 2932 (ATel-Link)
  25. Russell, D. M., Lewis, F., Bersier, D., Cano, Z., Gandhi, P., Patruno, A., Kalamkar, M., Yang, Y. J., Altamirano, D., Casella, P., Linares, M., Padilla, M. A., Cavecchi, Y., Degenaar, N., Kaur, R., van der Klis, M., Watts, A., Wijnands, R., and Rea, N., 2010, Optical variability in MAXI J1659-152, ATel 2884 (ATel-Link)
  26. Kalamkar, M., Yang, Y. J., Altamirano, D., Casella, P., Linares, M., Patruno, A., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Russell, D., Kaur, R., van der Klis, M., Watts, A., Wijnands, R., and Rea, N., 2010, MAXI J1659-152 is a BH candidate, ATel 2881 (ATel-Link)
  27. Russell, D. M., Yang, Y. J., Patruno, A., Degenaar, N., Altamirano, D., Wijnands, R., and Lewis, F., 2010, Candidate optical counterparts of XTE J1728-295 = IGR J17285-2922, ATel 2827 (ATel-Link)
  28. Yang, Y. J., Patruno, A., Degenaar, N., Russell, D. M., Altamirano, D., and Wijnands, R., 2010, Swift/XRT follow-up and a refined position of the X-ray transient XTE J1728-295, ATel 2824 (ATel-Link)
  29. Armas Padilla, M., Degenaar, N., Kaur, R., Wijnands, R., and Yang, Y. J. %1, 2010, XMMSL1 J171900.4-353217 returns to quiescence., ATel 2738 (ATel-Link)
  30. Kong, A. K. H., and Yang, Y. J. %1, 2010, Swift/XRT detection of an X-ray flare and jet emission from Cir X-1, ATel 2671 (ATel-Link)
  31. Patruno, A., Yang, Y. J., Altamirano, D., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Klis, M. V. D., Watts, A., Wijnands, R., Linares, M., Casella, P., Rea, N., Soleri, P., Markwardt, C., Strohmayer, T., and Heinke, C., 2010, New outburst of the accreting millisecond X-ray pulsar NGC 6440 X-2 and discovery of a strong 1 Hz modulation in the light-curve, ATel 2672 (ATel-Link)
  32. Armas Padilla, M., Degenaar, N., Yang, Y. J., Patruno, A., and Wijnands, R., 2010, Decreased flux of the new X-ray source XMMSL1 J171900.4-353217 detected by Swift-XRT, ATel 2656 (ATel-Link)
  33. Linares, M., Soleri, P., Altamirano, D., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., van der Klis, M., Patruno, A., Watts, A., Wijnands, R., Yang, Y. J., Casella, P., Rea, N., Chakrabarty, D., and Homan, J., 2010, Swift-XRT detects X-ray burst from Circinus X-1, ATel 2651 (ATel-Link)
  34. Linares, M., Soleri, P., Watts, A., Altamirano, D., Armas-Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., van der Klis, M., Patruno, A., Wijnands, R., Yang, Y. J., Casella, P., and Rea, N., 2010, RXTE detects X-ray bursts from Circinus X-1, ATel 2643 (ATel-Link)
  35. Yang, Y. J., Russell, D. M., Wijnands, R., van der Klis, M., Altamirano, D., Patruno, A., Watts, A., Armas Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Linares, M., Casella, P., Rea, N., Soleri, P., Lewis, F., and Kong, A. K. H., 2010, SWIFT J1749.4-2807: X-ray decay, refined position and optical observation, ATel 2579 (ATel-Link)
  36. Altamirano, D., Wijnands, R., van der Klis, M., Patruno, A., Watts, A., Armas Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Yang, Y. J., Casella, P., Linares, M., Soleri, P., and Rea, N., 2010, Detection of coherent millisecond pulsations at ~518 Hz in the LMXB Swift J1749.4-2807 (GRB060602B), ATel 2565 (ATel-Link)
  37. Altamirano, D., Patruno, A., Watts, A., Armas Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Soleri, P., Yang, Y. J., van der Klis, M., Wijnands, R., Casella, P., Linares, M., and Rea, N., 2010, Discovery of kilohertz QPOs in RXTE observations of SAX J1748.9-2021., ATel 2426 (ATel-Link)
  38. Patruno, A., Altamirano, D., Watts, A., Armas Padilla, M., Cavecchi, Y., Degenaar, N., Kalamkar, M., Kaur, R., Soleri, P., Yang, Y. J., van der Klis, M., Wijnands, R., Casella, P., Linares, M., Rea, N., Heinke, C. O., and Pooley, D., 2010, Detection of pulsations and identification of SAX J1748.9-2021 as the X-ray transient in NGC 6440., ATel 2407 (ATel-Link)