N. Whitehorn, T. Natoli, P. A R Ade, J. E. Austermann, J. A. Beall, A. N. Bender, B. A. Benson, L. E. Bleem, J. E. Carlstrom, C. L. Chang, H. C. Chiang, H. M. Cho, R. Citron, T. M. Crawford, A. T. Crites, T. De Haan, M. A. Dobbs, W. Everett, J. Gallicchio, E. M. GeorgeA. Gilbert, N. W. Halverson, N. Harrington, J. W. Henning, G. C. Hilton, G. P. Holder, W. L. Holzapfel, S. Hoover, Z. Hou, J. D. Hrubes, N. Huang, J. Hubmayr, K. D. Irwin, R. Keisler, L. Knox, A. T. Lee, E. M. Leitch, D. Li, J. J. McMahon, S. S. Meyer, L. Mocanu, J. P. Nibarger, V. Novosad, S. Padin, C. Pryke, C. L. Reichardt, J. E. Ruhl, B. R. Saliwanchik, J. T. Sayre, K. K. Schaffer, G. Smecher, A. A. Stark, K. T. Story, C. Tucker, K. Vanderlinde, J. D. Vieira, G. Wang, V. Yefremenko

Research output: Contribution to journalArticle

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The millimeter transient sky is largely unexplored, with measurements limited to follow-up of objects detected at other wavelengths. High-angular-resolution telescopes, designed for measurement of the cosmic microwave background (CMB), offer the possibility to discover new, unknown transient sources in this band - particularly the afterglows of unobserved gamma-ray bursts (GRBs). Here, we use the 10 m millimeter-wave South Pole Telescope, designed for the primary purpose of observing the CMB at arcminute and larger angular scales, to conduct a search for such objects. During the 2012-2013 season, the telescope was used to continuously observe a 100 deg2 patch of sky centered at R.A. 23h30m and decl. -55° using the polarization-sensitive SPTpol camera in two bands centered at 95 and 150 GHz. These 6000 hr of observations provided continuous monitoring for day- to month-scale millimeter-wave transient sources at the 10 mJy level. One candidate object was observed with properties broadly consistent with a GRB afterglow, but at a statistical significance too low (p = 0.01) to confirm detection.

Original languageEnglish (US)
Article number143
JournalAstrophysical Journal
Issue number2
StatePublished - Oct 20 2016


  • gamma-ray burst: general
  • polarization

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    Whitehorn, N., Natoli, T., Ade, P. A. R., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H. M., Citron, R., Crawford, T. M., Crites, A. T., Haan, T. D., Dobbs, M. A., Everett, W., Gallicchio, J., ... Yefremenko, V. (2016). MILLIMETER TRANSIENT POINT SOURCES in the SPTpol 100 SQUARE DEGREE SURVEY. Astrophysical Journal, 830(2), [143].