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Title: A DECam Search for Explosive Optical Transients Associated with IceCube Neutrino Alerts

Abstract

In this work, we investigate the likelihood of association between real-time, neutrino alerts with teraelectronvolt to petaelectronvolt energy from IceCube and optical counterparts in the form of core-collapse supernovae (CC SNe). The optical follow-up of IceCube alerts requires two main instrumental capabilities: (1) deep imaging, since 73% of neutrinos would come from CC SNe at redshifts z > 0.3, and (2) a large field of view (FoV), since typical IceCube muon neutrino pointing accuracy is on the order of similar to 1 deg. With Blanco/DECam (gri to 24th magnitude and 2.2 deg diameter FoV), we performed a triggered optical follow-up observation of two IceCube alerts, IC170922A and IC171106A, on six. nights during the three weeks following each alert. For the IC170922A (IC171106A) follow-up observations, we expect that 12.1% (9.5%) of coincident CC SNe at z less than or similar to 0.3 are detectable, and that, on average, 0.23 (0.07) unassociated SNe in the neutrino 90% containment regions also pass our selection criteria. We find two candidate CC SNe that are temporally coincident with the neutrino alerts in the FoV, but none in the 90% containment regions, a result that is statistically consistent with expected rates of background CC SNe formore » these observations. If CC SNe are the dominant source of teraelectronvolt to petaelectronvolt neutrinos, we would expect an excess of coincident CC SNe to be detectable at the 3 sigma confidence level using DECam observations similar to those of this work for similar to 60 (similar to 200) neutrino alerts with (without) redshift information for all candidates.« less

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Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); National Science Foundation (NSF)
Contributing Org.:
DES; IceCube Collaboration; DES Collaboration
OSTI Identifier:
1568877
Alternate Identifier(s):
OSTI ID: 1575121; OSTI ID: 1606730; OSTI ID: 1631963; OSTI ID: 1697999
Report Number(s):
arXiv:1907.07193; FERMILAB-PUB-19-342-AE; DES-2018-0408
Journal ID: ISSN 1538-4357; oai:inspirehep.net:1744304; TRN: US2100325
Grant/Contract Number:  
AC02-07CH11359; AC02-76SF00515; AST-1138766; AST-1536171; AC05-00OR22725; AC02-06CH11357; SC0019193
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 883; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Core-collapse supernovae; Neutrino astronomy; Optical observation

Citation Formats

Morgan, R., Bechtol, K., Kessler, R., Sako, M., Herner, K., Doctor, Z., Scolnic, D., Sevilla-Noarbe, I., Franckowiak, A., Neilson, K. N., Kowalski, M., Palmese, A., Swann, E., Thomas, B. P., Vivas, A. K., Drlica-Wagner, A., Garcia, A., Brout, D., Paz-Chinchón, F., Neilsen, E., Diehl, H. T., Soares-Santos, M., Abbott, T. M. C., Avila, S., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Cawthon, R., Costanzi, M., De Vicente, J., Desai, S., Doel, P., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., James, D. J., Kuropatkin, N., Lima, M., Maia, M. A. G., Marshall, J. L., Menanteau, F., Miller, C. J., Miquel, R., Plazas, A. A., Sanchez, E., Scarpine, V., Schubnell, M., Serrano, S., Smith, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Vikram, V., Walker, A. R., and Weller, J. A DECam Search for Explosive Optical Transients Associated with IceCube Neutrino Alerts. United States: N. p., 2019. Web. doi:10.3847/1538-4357/ab3a45.
Morgan, R., Bechtol, K., Kessler, R., Sako, M., Herner, K., Doctor, Z., Scolnic, D., Sevilla-Noarbe, I., Franckowiak, A., Neilson, K. N., Kowalski, M., Palmese, A., Swann, E., Thomas, B. P., Vivas, A. K., Drlica-Wagner, A., Garcia, A., Brout, D., Paz-Chinchón, F., Neilsen, E., Diehl, H. T., Soares-Santos, M., Abbott, T. M. C., Avila, S., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Cawthon, R., Costanzi, M., De Vicente, J., Desai, S., Doel, P., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., James, D. J., Kuropatkin, N., Lima, M., Maia, M. A. G., Marshall, J. L., Menanteau, F., Miller, C. J., Miquel, R., Plazas, A. A., Sanchez, E., Scarpine, V., Schubnell, M., Serrano, S., Smith, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Vikram, V., Walker, A. R., & Weller, J. A DECam Search for Explosive Optical Transients Associated with IceCube Neutrino Alerts. United States. https://doi.org/10.3847/1538-4357/ab3a45
Morgan, R., Bechtol, K., Kessler, R., Sako, M., Herner, K., Doctor, Z., Scolnic, D., Sevilla-Noarbe, I., Franckowiak, A., Neilson, K. N., Kowalski, M., Palmese, A., Swann, E., Thomas, B. P., Vivas, A. K., Drlica-Wagner, A., Garcia, A., Brout, D., Paz-Chinchón, F., Neilsen, E., Diehl, H. T., Soares-Santos, M., Abbott, T. M. C., Avila, S., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Cawthon, R., Costanzi, M., De Vicente, J., Desai, S., Doel, P., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., James, D. J., Kuropatkin, N., Lima, M., Maia, M. A. G., Marshall, J. L., Menanteau, F., Miller, C. J., Miquel, R., Plazas, A. A., Sanchez, E., Scarpine, V., Schubnell, M., Serrano, S., Smith, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Vikram, V., Walker, A. R., and Weller, J. Thu . "A DECam Search for Explosive Optical Transients Associated with IceCube Neutrino Alerts". United States. https://doi.org/10.3847/1538-4357/ab3a45. https://www.osti.gov/servlets/purl/1568877.
@article{osti_1568877,
title = {A DECam Search for Explosive Optical Transients Associated with IceCube Neutrino Alerts},
author = {Morgan, R. and Bechtol, K. and Kessler, R. and Sako, M. and Herner, K. and Doctor, Z. and Scolnic, D. and Sevilla-Noarbe, I. and Franckowiak, A. and Neilson, K. N. and Kowalski, M. and Palmese, A. and Swann, E. and Thomas, B. P. and Vivas, A. K. and Drlica-Wagner, A. and Garcia, A. and Brout, D. and Paz-Chinchón, F. and Neilsen, E. and Diehl, H. T. and Soares-Santos, M. and Abbott, T. M. C. and Avila, S. and Bertin, E. and Brooks, D. and Buckley-Geer, E. and Rosell, A. Carnero and Kind, M. Carrasco and Carretero, J. and Cawthon, R. and Costanzi, M. and De Vicente, J. and Desai, S. and Doel, P. and Flaugher, B. and Fosalba, P. and Frieman, J. and García-Bellido, J. and Gaztanaga, E. and Gerdes, D. W. and Gruen, D. and Gruendl, R. A. and Gschwend, J. and Gutierrez, G. and Hollowood, D. L. and Honscheid, K. and James, D. J. and Kuropatkin, N. and Lima, M. and Maia, M. A. G. and Marshall, J. L. and Menanteau, F. and Miller, C. J. and Miquel, R. and Plazas, A. A. and Sanchez, E. and Scarpine, V. and Schubnell, M. and Serrano, S. and Smith, M. and Sobreira, F. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Vikram, V. and Walker, A. R. and Weller, J.},
abstractNote = {In this work, we investigate the likelihood of association between real-time, neutrino alerts with teraelectronvolt to petaelectronvolt energy from IceCube and optical counterparts in the form of core-collapse supernovae (CC SNe). The optical follow-up of IceCube alerts requires two main instrumental capabilities: (1) deep imaging, since 73% of neutrinos would come from CC SNe at redshifts z > 0.3, and (2) a large field of view (FoV), since typical IceCube muon neutrino pointing accuracy is on the order of similar to 1 deg. With Blanco/DECam (gri to 24th magnitude and 2.2 deg diameter FoV), we performed a triggered optical follow-up observation of two IceCube alerts, IC170922A and IC171106A, on six. nights during the three weeks following each alert. For the IC170922A (IC171106A) follow-up observations, we expect that 12.1% (9.5%) of coincident CC SNe at z less than or similar to 0.3 are detectable, and that, on average, 0.23 (0.07) unassociated SNe in the neutrino 90% containment regions also pass our selection criteria. We find two candidate CC SNe that are temporally coincident with the neutrino alerts in the FoV, but none in the 90% containment regions, a result that is statistically consistent with expected rates of background CC SNe for these observations. If CC SNe are the dominant source of teraelectronvolt to petaelectronvolt neutrinos, we would expect an excess of coincident CC SNe to be detectable at the 3 sigma confidence level using DECam observations similar to those of this work for similar to 60 (similar to 200) neutrino alerts with (without) redshift information for all candidates.},
doi = {10.3847/1538-4357/ab3a45},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 883,
place = {United States},
year = {2019},
month = {9}
}

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Works referenced in this record:

All-sky Search for Time-integrated Neutrino Emission from Astrophysical Sources with 7 yr of IceCube Data
journal, January 2017


Neutrinos from Supernovae: a Review
journal, December 2006


First cosmological results using Type Ia supernovae from the Dark Energy Survey: measurement of the Hubble constant
journal, April 2019

  • Macaulay, E.; Nichol, R. C.; Bacon, D.
  • Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 2
  • DOI: 10.1093/mnras/stz978

How to Find More Supernovae with Less Work: Object Classification Techniques for Difference Imaging
journal, August 2007

  • Bailey, S.; Aragon, C.; Romano, R.
  • The Astrophysical Journal, Vol. 665, Issue 2
  • DOI: 10.1086/519832

Inspecting the supernova–gamma-ray-burst connection with high-energy neutrinos
journal, March 2016


The IceCube Neutrino Observatory: instrumentation and online systems
journal, March 2017


Energy reconstruction methods in the IceCube neutrino telescope
journal, March 2014


A Combined Maximum-Likelihood Analysis of the High-Energy Astrophysical Neutrino flux Measured with Icecube
journal, August 2015


Probabilistic Principal Component Analysis
journal, August 1999

  • Tipping, Michael E.; Bishop, Christopher M.
  • Journal of the Royal Statistical Society: Series B (Statistical Methodology), Vol. 61, Issue 3, p. 611-622
  • DOI: 10.1111/1467-9868.00196

Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing
journal, August 2018


Astrophysical Multimessenger Observatory Network (AMON): Science, Infrastructure, and Status
conference, August 2018

  • Keivani, Azadeh; Ayala, Hugo; DeLaunay, James
  • Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)
  • DOI: 10.22323/1.301.0629

High-Energy Neutrinos from Gamma Ray Bursts
journal, August 2003


THE DETECTION OF A SN IIn IN OPTICAL FOLLOW-UP OBSERVATIONS OF ICECUBE NEUTRINO EVENTS
journal, September 2015


Results from the Supernova Photometric Classification Challenge
journal, December 2010

  • Kessler, Richard; Bassett, Bruce; Belov, Pavel
  • Publications of the Astronomical Society of the Pacific, Vol. 122, Issue 898
  • DOI: 10.1086/657607

The dark Energy Camera
journal, October 2015


Cosmic Star-Formation History
journal, August 2014


TeV–PeV Neutrinos from Low-Power Gamma-Ray Burst Jets inside Stars
journal, September 2013


The Dark Energy Survey data processing and calibration system
conference, September 2012

  • Mohr, Joseph J.; Armstrong, Robert; Bertin, Emmanuel
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.926785

Automated Transient Identification in the dark Energy Survey
journal, August 2015


SNANA: A Public Software Package for Supernova Analysis
journal, September 2009

  • Kessler, Richard; Bernstein, Joseph P.; Cinabro, David
  • Publications of the Astronomical Society of the Pacific, Vol. 121, Issue 883
  • DOI: 10.1086/605984

TeV Neutrinos from Successful and Choked Gamma-Ray Bursts
journal, October 2001


High-energy astrophysics with neutrino telescopes
journal, January 2010


The Astrophysical Multimessenger Observatory Network (AMON)
journal, May 2013


High-energy neutrino astronomy: detection methods and first achievements
journal, March 2011


Shock Breakout in Core‐Collapse Supernovae and Its Neutrino Signature
journal, July 2003

  • Thompson, Todd A.; Burrows, Adam; Pinto, Philip A.
  • The Astrophysical Journal, Vol. 592, Issue 1
  • DOI: 10.1086/375701

The GRB coordinates network (GCN): A status report
conference, January 1998

  • Barthelmy, S. D.; Butterworth, P.; Cline, T. L.
  • GAMMA-RAY BURSTS, Fourth Huntsville gamma-ray burst symposium
  • DOI: 10.1063/1.55426

Choked jets and low-luminosity gamma-ray bursts as hidden neutrino sources
journal, April 2016


On the Nature of Core-Collapse Supernova Explosions
journal, September 1995

  • Burrows, Adam; Hayes, John; Fryxell, Bruce A.
  • The Astrophysical Journal, Vol. 450
  • DOI: 10.1086/176188

PHOTOMETRIC TYPE Ia SUPERNOVA CANDIDATES FROM THE THREE-YEAR SDSS-II SN SURVEY DATA
journal, August 2011


The Difference Imaging Pipeline for the Transient Search in the dark Energy Survey
journal, November 2015


Search for Prompt Neutrino Emission from Gamma-Ray Bursts with Icecube
journal, May 2015


ANNz2: Photometric Redshift and Probability Distribution Function Estimation using Machine Learning
journal, August 2016


The Supernova Legacy Survey 3-year sample: Type Ia supernovae photometric distances and cosmological constraints
journal, November 2010


“Espresso” Acceleration of Ultra-High-Energy Cosmic rays
journal, September 2015


Energetic ( > 1 GeV) neutrinos as a probe of acceleration in the new supernova
journal, April 1987


The physics of core-collapse supernovae
journal, December 2005

  • Woosley, Stan; Janka, Thomas
  • Nature Physics, Vol. 1, Issue 3
  • DOI: 10.1038/nphys172

Search for transient optical counterparts to high-energy IceCube neutrinos with Pan-STARRS1
journal, June 2019


The IceCube realtime alert system
journal, June 2017


Evidence against Star-forming Galaxies as the Dominant Source of Icecube Neutrinos
journal, February 2017


Multiwavelength follow-up of a rare IceCube neutrino multiplet
journal, November 2017


Search for a diffuse flux of astrophysical muon neutrinos with the IceCube 40-string detector
journal, October 2011


TeV Neutrinos from Core Collapse Supernovae and Hypernovae
journal, October 2004


Eddington bias for cosmic neutrino sources
journal, January 2019


Supernova Simulations and Strategies for the dark Energy Survey
journal, June 2012


The rise-time of Type II supernovae
journal, June 2015

  • Gonzalez-Gaitan, S.; Tominaga, N.; Molina, J.
  • Monthly Notices of the Royal Astronomical Society, Vol. 451, Issue 2
  • DOI: 10.1093/mnras/stv1097

Matplotlib: A 2D Graphics Environment
journal, January 2007


A Measurement of the Rate of Type Ia Supernovae at Redshift z ≈ 0.1 from the First Season of the SDSS‐II Supernova Survey
journal, July 2008

  • Dilday, Benjamin; Kessler, Richard; Frieman, Joshua A.
  • The Astrophysical Journal, Vol. 682, Issue 1
  • DOI: 10.1086/587733

Multimessenger Astronomy with Neutrinos
journal, September 2017


Revealing the Supernova–Gamma-Ray Burst Connection with TeV Neutrinos
journal, August 2005


The concordance cosmic star formation rate: implications from and for the supernova neutrino and gamma ray backgrounds
journal, April 2005

  • Strigari, Louis E.; Beacom, John F.; Walker, Terry P.
  • Journal of Cosmology and Astroparticle Physics, Vol. 2005, Issue 04
  • DOI: 10.1088/1475-7516/2005/04/017

THE CONTRIBUTION OF FERMI -2LAC BLAZARS TO DIFFUSE TEV–PEV NEUTRINO FLUX
journal, January 2017


The NumPy Array: A Structure for Efficient Numerical Computation
journal, March 2011

  • van der Walt, Stéfan; Colbert, S. Chris; Varoquaux, Gaël
  • Computing in Science & Engineering, Vol. 13, Issue 2
  • DOI: 10.1109/MCSE.2011.37

Searching for soft relativistic jets in core-collapse supernovae with the IceCube optical follow-up program
journal, February 2012


Random Forests
journal, January 2001


Optical and X-ray early follow-up of ANTARES neutrino alerts
journal, February 2016

  • Adrián-Martínez, S.; Ageron, M.; Albert, A.
  • Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 02
  • DOI: 10.1088/1475-7516/2016/02/062

Detecting neutrino transients with optical follow-up observations
journal, July 2007


Galactic neutrinos in the TeV to PeV range
journal, January 2016


A Combined Maximum-Likelihood Analysis of the High-Energy Astrophysical Neutrino Flux Measured with IceCube
text, January 2015

  • Aartsen, M. G.; Abraham, K.; Ackermann, M.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2016-00281

Eddington bias for cosmic neutrino sources
text, January 2019

  • Strotjohann, Nora Linn; Kowalski, Marek; Franckowiak, Anna
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2020-00343

miRNALoc: predicting miRNA subcellular localizations based on principal component scores of physico-chemical properties and pseudo compositions of di-nucleotides
journal, September 2020

  • Meher, Prabina Kumar; Satpathy, Subhrajit; Rao, Atmakuri Ramakrishna
  • Scientific Reports, Vol. 10, Issue 1
  • DOI: 10.1038/s41598-020-71381-4

CASSPER is a semantic segmentation-based particle picking algorithm for single-particle cryo-electron microscopy
journal, February 2021


Energetic (>1 GeV) Neutrinos as a Probe of Acceleration in the New Supernova
journal, August 1987


The Detection of a SN IIn in Optical Follow-Up Observations of IceCube Neutrino Events
text, January 2015

  • Aartsen, M. G.; Abraham, K.; Ackermann, M.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2016-00519

The IceCube Neutrino Observatory: instrumentation and online systems
text, January 2017

  • Aartsen, M. G.; Ackermann, M.; Adams, J.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2017-01470

Search for transient optical counterparts to high-energy IceCube neutrinos with Pan-STARRS1
text, January 2019


TeV Neutrinos from Successful and Choked Gamma-Ray Bursts
text, January 2001


Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
text, January 2013


The IceCube realtime alert system
text, January 2017

  • Aartsen, M. G.; Ackermann, Markus; Adams, J.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2017-04973

Multiwavelength follow-up of a rare IceCube neutrino multiplet
text, January 2017

  • Aartsen, M. G.; Ackermann, M.; Adams, J.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2017-12822

All-sky Search for Time-integrated Neutrino Emission from Astrophysical Sources with 7 yr of IceCube Data
text, January 2017

  • Aartsen, M. G.; Abraham, K.; Ackermann, M.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2018-00004

High-Energy Astrophysics with Neutrino Telescopes
text, January 2009


Results from the Supernova Photometric Classification Challenge
text, January 2010


Supernova Simulations and Strategies For the Dark Energy Survey
text, January 2011


Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
text, January 2013


Automated Transient Identification in the Dark Energy Survey
text, January 2015


The Rise-Time of Type II Supernovae
preprint, January 2015


Galactic Neutrinos in the TeV to PeV Range
text, January 2015


Evidence against star-forming galaxies as the dominant source of IceCube neutrinos
text, January 2015


Choked Jets and Low-Luminosity Gamma-Ray Bursts as Hidden Neutrino Sources
text, January 2015


The contribution of Fermi-2LAC blazars to the diffuse TeV-PeV neutrino flux
text, January 2016


The IceCube Realtime Alert System
text, January 2016


Multiwavelength follow-up of a rare IceCube neutrino multiplet
text, January 2017


Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
text, January 2017


Eddington bias for cosmic neutrino sources
text, January 2018


TeV Neutrinos from Successful and Choked Gamma-Ray Bursts
text, January 2001


Shock Breakout in Core-Collapse Supernovae and its Neutrino Signature
text, January 2002


Revealing the Supernova--Gamma-Ray Burst Connection with TeV Neutrinos
text, January 2005


The Physics of Core-Collapse Supernovae
text, January 2006