Millimeter transient point sources in the sptpol 100 square degree survey

Whitehorn, N., Natoli, T., Ade, Peter ORCID: https://orcid.org/0000-0002-5127-0401, 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. de, Dobbs, M. A., Everett, W., Gallicchio, J., George, E. M., Gilbert, A., Halverson, N. W., Harrington, N., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., McMahon, J. J., Meyer, S. S., Mocanu, L., Nibarger, J. P., Novosad, V., Padin, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Saliwanchik, B. R., Sayre, J. T., Schaffer, K. K., Smecher, G., Stark, A. A., Story, K. T., Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918, Vanderlinde, K., Vieira, J. D., Wang, G. and Yefremenko, V. 2016. Millimeter transient point sources in the sptpol 100 square degree survey. Astrophysical Journal 830 (2) , 143. 10.3847/0004-637X/830/2/143

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Abstract

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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Publisher:	American Astronomical Society
ISSN:	1538-4357
Date of First Compliant Deposit:	7 July 2017
Date of Acceptance:	26 July 2016
Last Modified:	05 May 2023 03:35
URI:	https://orca.cardiff.ac.uk/id/eprint/102172

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