A Search for Millimeter-bright Blazars as Astrophysical Neutrino Sources
Journal article, 2026

The powerful jets of blazars have been historically considered as likely sites of high-energy cosmic-ray acceleration. However, the particulars of the launched jet and the locations of leptonic and hadronic jet loading remain unclear. In the case when leptonic and hadronic particle injection occur jointly, a temporal correlation between synchrotron radiation and neutrino production is expected. We use a first catalog of millimeter wavelength (95-225 GHz) blazar light curves from the Atacama Cosmology Telescope for a time-dependent correlation with 12 yr of muon neutrino events from the IceCube South Pole Neutrino Observatory. Such millimeter emission traces activity of the bright jet base, which is often self-absorbed at lower frequencies and potentially gamma-ray opaque. We perform an analysis of the population, as well as analyses of individual, selected sources. We do not observe a significant signal from the stacked population. TXS 0506+056 is found as the most significant, individual source, though this detection is not globally significant in our analysis of selected active galactic nuclei. Our results suggest that the majority of millimeter-bright blazars are neutrino dim. In general, it is possible that many blazars have lighter, leptonic jets, or that only selected blazars provide exceptional conditions for neutrino production.

Author

R. Abbasi

Loyola University of Chicago

M. Ackermann

Deutsches Elektronen-Synchrotron (DESY)

J. Adams

University of Canterbury

S. K. Agarwalla

University of Wisconsin Madison

Institute of Physics Bhubaneswar

J. A. Aguilar

Université libre de Bruxelles (ULB)

J. M. Alameddine

University of Copenhagen

N. M. Amin

University of Delaware

K. Andeen

Marquette University

C. Arguelles

Harvard University

Y. Ashida

University of Utah

S. Athanasiadou

Deutsches Elektronen-Synchrotron (DESY)

S. N. Axani

University of Delaware

R. Babu

Michigan State University

X. Bai

South Dakota School of Mines & Technology

J. Baines-Holmes

University of Wisconsin Madison

A. V. Balagopal

University of Wisconsin Madison

S. W. Barwick

University of California

S. Bash

Technical University of Munich

V. Basu

University of Utah

R. Bay

University of California

J. J. Beatty

Ohio State University

J. Becker Tjus

P. Behrens

RWTH Aachen University

C. Bellenghi

Technical University of Munich

B. Benkel

Deutsches Elektronen-Synchrotron (DESY)

S. BenZvi

University of Rochester

D. Berley

University of Maryland

E. Bernardini

National Institute for Nuclear Physics

University of Padua

D. Z. Besson

University of Kansas

E. Blaufuss

University of Maryland

L. Bloom

University of Alabama

S. Blot

Deutsches Elektronen-Synchrotron (DESY)

I. Bodo

University of Wisconsin Madison

F. Bontempo

Karlsruhe Institute of Technology (KIT)

J. Y. Book Motzkin

Harvard University

C. Boscolo Meneguolo

National Institute for Nuclear Physics

University of Padua

S. Boeser

Johannes Gutenberg University Mainz

J. Boettcher

RWTH Aachen University

J. Braun

University of Wisconsin Madison

B. Brinson

Georgia Institute of Technology

Z. Brisson-Tsavoussis

Queen's University

R. T. Burley

University of Adelaide

D. Butterfield

University of Wisconsin Madison

M. A. Campana

Drexel University

K. Carloni

Harvard University

J. Carpio

University of Nevada, Las Vegas

S. Chattopadhyay

University of Wisconsin Madison

Institute of Physics Bhubaneswar

N. Chau

Université libre de Bruxelles (ULB)

Z. Chen

State University of New York

D. Chirkin

University of Wisconsin Madison

S. Choi

University of Utah

B. A. Clark

University of Maryland

A. Coleman

Uppsala University

University of Wisconsin Madison

Karlsruhe Institute of Technology (KIT)

P. Coleman

RWTH Aachen University

G. H. Collin

Massachusetts Institute of Technology (MIT)

A. Connolly

Ohio State University

J. M. Conrad

Massachusetts Institute of Technology (MIT)

R. Corley

University of Utah

D. F. Cowen

Pennsylvania State University

C. De Clercq

Vrije Universiteit Brussel (VUB)

J. J. DeLaunay

Pennsylvania State University

D. Delgado

Harvard University

T. Delmeulle

Université libre de Bruxelles (ULB)

S. Deng

RWTH Aachen University

P. Desiati

University of Wisconsin Madison

K. D. de Vries

Vrije Universiteit Brussel (VUB)

G. de Wasseige

Universite catholique de Louvain

T. DeYoung

Michigan State University

J. C. Diaz-Velez

University of Wisconsin Madison

S. DiKerby

Michigan State University

M. Dittmer

University of Münster

A. Domi

University of Erlangen-Nuremberg (FAU)

L. Draper

University of Utah

L. Dueser

RWTH Aachen University

D. Durnford

University of Alberta

K. Dutta

Johannes Gutenberg University Mainz

M. A. DuVernois

University of Wisconsin Madison

T. Ehrhardt

Johannes Gutenberg University Mainz

L. Eidenschink

Technical University of Munich

A. Eimer

University of Erlangen-Nuremberg (FAU)

P. Eller

Technical University of Munich

E. Ellinger

Bergische Universität Wuppertal

D. Elsaesser

University of Copenhagen

R. Engel

Karlsruhe Institute of Technology (KIT)

H. Erpenbeck

University of Wisconsin Madison

S. Eulig

Harvard University

J. Evans

University of Maryland

P. A. Evenson

Deutsches Elektronen-Synchrotron (DESY)

K. L. Fan

University of Maryland

K. Fang

University of Wisconsin Madison

K. Farrag

Chiba University

A. R. Fazely

A. Fedynitch

Academia Sinica

N. Feigl

Humboldt University of Berlin

C. Finley

Stockholm University

L. Fischer

Deutsches Elektronen-Synchrotron (DESY)

D. Fox

Pennsylvania State University

A. Franckowiak

Ruhr-Universität Bochum

S. Fukami

Deutsches Elektronen-Synchrotron (DESY)

P. Fuerst

RWTH Aachen University

J. Gallagher

University of Wisconsin Madison

E. Ganster

RWTH Aachen University

A. Garcia

Harvard University

M. Garcia

University of Delaware

G. Garg

University of Wisconsin Madison

Institute of Physics Bhubaneswar

E. Genton

Universite catholique de Louvain

Harvard University

L. Gerhardt

Lawrence Berkeley National Laboratory

A. Ghadimi

University of Alabama

C. Glaser

Uppsala University

J. G. Gonzalez

University of Delaware

S. Goswami

University of Nevada, Las Vegas

A. Granados

Michigan State University

D. Grant

Simon Fraser University

S. J. Gray

University of Maryland

S. Griffin

University of Wisconsin Madison

S. Griswold

University of Rochester

D. Guevel

University of Wisconsin Madison

C. Guenther

RWTH Aachen University

P. Gutjahr

University of Copenhagen

C. Ha

Chung-Ang University

C. Haack

University of Erlangen-Nuremberg (FAU)

A. Hallgren

Uppsala University

L. Halve

RWTH Aachen University

F. Halzen

University of Wisconsin Madison

L. Hamacher

RWTH Aachen University

M. Ha Minh

Technical University of Munich

M. Handt

RWTH Aachen University

K. Hanson

University of Wisconsin Madison

J. Hardin

Massachusetts Institute of Technology (MIT)

A. A. Harnisch

Michigan State University

P. Hatch

Queen's University

A. Haungs

Karlsruhe Institute of Technology (KIT)

J. Haeussler

RWTH Aachen University

K. Helbing

Bergische Universität Wuppertal

J. Hellrung

Ruhr-Universität Bochum

L. Hennig

University of Erlangen-Nuremberg (FAU)

L. Heuermann

RWTH Aachen University

R. Hewett

University of Canterbury

S. Hickford

Bergische Universität Wuppertal

A. Hidvegi

Stockholm University

Deutsches Elektronen-Synchrotron (DESY)

University of Wisconsin Madison

C. Hill

Chiba University

G. C. Hill

University of Adelaide

R. Hmaid

Chiba University

K. D. Hoffman

University of Maryland

D. Hooper

University of Wisconsin Madison

S. Hori

University of Wisconsin Madison

K. Hoshina

University of Wisconsin Madison

University of Tokyo

M. Hostert

Harvard University

W. Hou

Karlsruhe Institute of Technology (KIT)

T. Huber

Karlsruhe Institute of Technology (KIT)

K. Hultqvist

Stockholm University

K. Hymon

University of Copenhagen

Academia Sinica

A. Ishihara

Chiba University

W. Iwakiri

Chiba University

S. Jain

University of Wisconsin Madison

O. Janik

University of Erlangen-Nuremberg (FAU)

M. Jeong

University of Utah

M. Jin

Harvard University

N. Kamp

Harvard University

D. Kang

Karlsruhe Institute of Technology (KIT)

X. Kang

Drexel University

A. Kappes

University of Münster

L. Kardum

University of Copenhagen

M. Karl

Technical University of Munich

A. Katil

University of Alberta

M. Kauer

University of Wisconsin Madison

J. L. Kelley

University of Wisconsin Madison

M. Khanal

University of Utah

A. Khatee Zathul

University of Wisconsin Madison

A. Kheirandish

University of Nevada, Las Vegas

H. Kimku

Chung-Ang University

J. Kiryluk

State University of New York

C. Klein

University of Erlangen-Nuremberg (FAU)

S. R. Klein

University of California

Lawrence Berkeley National Laboratory

Y. Kobayashi

Chiba University

A. Kochocki

Michigan State University

R. Koirala

University of Delaware

H. Kolanoski

Humboldt University of Berlin

T. Kontrimas

Technical University of Munich

L. Koepke

Johannes Gutenberg University Mainz

C. Kopper

University of Erlangen-Nuremberg (FAU)

P. Koundal

University of Delaware

M. Kowalski

Humboldt University of Berlin

Deutsches Elektronen-Synchrotron (DESY)

N. Krieger

Ruhr-Universität Bochum

J. Krishnamoorthi

University of Wisconsin Madison

Institute of Physics Bhubaneswar

T. Krishnan

Harvard University

K. Kruiswijk

Universite catholique de Louvain

E. Krupczak

Michigan State University

A. Kumar

Deutsches Elektronen-Synchrotron (DESY)

E. Kun

Ruhr-Universität Bochum

N. Kurahashi

Drexel University

N. Lad

Deutsches Elektronen-Synchrotron (DESY)

C. Lagunas Gualda

Technical University of Munich

L. Lallement Arnaud

Université libre de Bruxelles (ULB)

M. Lamoureux

Universite catholique de Louvain

M. J. Larson

University of Maryland

F. Lauber

Bergische Universität Wuppertal

J. P. Lazar

Universite catholique de Louvain

K. Leonard DeHolton

Pennsylvania State University

A. Leszczynska

University of Delaware

J. Liao

Georgia Institute of Technology

Y. T. Liu

Pennsylvania State University

M. Liubarska

University of Alberta

C. Love

Drexel University

L. Lu

University of Wisconsin Madison

F. Lucarelli

University of Geneva

W. Luszczak

Ohio State University

Y. Lyu

University of California

Lawrence Berkeley National Laboratory

J. Madsen

University of Wisconsin Madison

E. Magnus

Vrije Universiteit Brussel (VUB)

K. B. M. Mahn

Michigan State University

Y. Makino

University of Wisconsin Madison

E. Manao

Technical University of Munich

S. Mancina

University of Padua

National Institute for Nuclear Physics

S. Marka

Columbia University

Z. Marka

Columbia University

L. Marten

RWTH Aachen University

I. Martinez-Soler

Harvard University

R. Maruyama

Yale University

F. Mayhew

Michigan State University

F. McNally

Mercer University

K. Meagher

University of Wisconsin Madison

S. Mechbal

Deutsches Elektronen-Synchrotron (DESY)

A. Medina

Ohio State University

M. Meier

Chiba University

Y. Merckx

Vrije Universiteit Brussel (VUB)

L. Merten

Ruhr-Universität Bochum

J. Mitchell

Southern University and A&M College

L. Molchany

South Dakota School of Mines & Technology

T. Montaruli

University of Geneva

R. W. Moore

University of Alberta

Y. Morii

Chiba University

A. Mosbrugger

University of Erlangen-Nuremberg (FAU)

M. Moulai

University of Wisconsin Madison

D. Mousadi

Deutsches Elektronen-Synchrotron (DESY)

T. Mukherjee

Karlsruhe Institute of Technology (KIT)

R. Naab

Deutsches Elektronen-Synchrotron (DESY)

M. Nakos

University of Wisconsin Madison

U. Naumann

Bergische Universität Wuppertal

J. Necker

Deutsches Elektronen-Synchrotron (DESY)

L. Neste

Stockholm University

M. Neumann

University of Münster

H. Niederhausen

Michigan State University

M. U. Nisa

Michigan State University

K. Noda

Chiba University

A. Noell

RWTH Aachen University

A. Novikov

University of Wisconsin Madison

University of Delaware

A. Obertacke Pollmann

Chiba University

V. O'Dell

University of Wisconsin Madison

A. Olivas

University of Wisconsin Madison

University of Maryland

R. Orsoe

Technical University of Munich

J. Osborn

University of Wisconsin Madison

V. Palusova

Johannes Gutenberg University Mainz

H. Pandya

University of Delaware

A. Parenti

Université libre de Bruxelles (ULB)

N. Park

Queen's University

V. Parrish

Michigan State University

Pontificia Universidad Católica de Valparaíso

E. N. Paudel

University of Alabama

L. Paul

South Dakota School of Mines & Technology

T. Pernice

Deutsches Elektronen-Synchrotron (DESY)

J. Peterson

University of Wisconsin Madison

M. Plum

South Dakota School of Mines & Technology

A. Ponten

Uppsala University

V. Poojyam

University of Alabama

Y. Popovych

Johannes Gutenberg University Mainz

M. Prado Rodriguez

University of Wisconsin Madison

B. Pries

Michigan State University

R. Procter-Murphy

University of Maryland

G. T. Przybylski

Lawrence Berkeley National Laboratory

L. Pyras

University of Utah

C. Raab

Universite catholique de Louvain

J. Rack-Helleis

Johannes Gutenberg University Mainz

N. Rad

Deutsches Elektronen-Synchrotron (DESY)

K. Rawlins

University of Alaska Anchorage

Z. Rechav

University of Wisconsin Madison

I. Reistroffer

South Dakota School of Mines & Technology

E. Resconi

Technical University of Munich

S. Reusch

Deutsches Elektronen-Synchrotron (DESY)

C. D. Rho

Sungkyunkwan University

W. Rhode

University of Copenhagen

B. Riedel

University of Wisconsin Madison

A. Rifaie

Bergische Universität Wuppertal

E. J. Roberts

University of Adelaide

S. Robertson

University of California

Lawrence Berkeley National Laboratory

M. Rongen

University of Erlangen-Nuremberg (FAU)

A. Rosted

Chiba University

C. Rott

University of Utah

T. Ruhe

University of Copenhagen

L. Ruohan

Technical University of Munich

J. Saffer

Karlsruhe Institute of Technology (KIT)

D. Salazar-Gallegos

Michigan State University

P. Sampathkumar

Karlsruhe Institute of Technology (KIT)

A. Sandrock

Bergische Universität Wuppertal

G. Sanger-Johnson

Michigan State University

M. Santander

University of Alabama

S. Sarkar

University of Oxford

J. Savelberg

RWTH Aachen University

P. Schaile

Technical University of Munich

M. Schaufel

RWTH Aachen University

H. Schieler

Karlsruhe Institute of Technology (KIT)

S. Schindler

University of Erlangen-Nuremberg (FAU)

L. Schlickmann

Johannes Gutenberg University Mainz

B. Schlueter

University of Münster

F. Schluter

University of Münster

N. Schmeisser

Bergische Universität Wuppertal

T. Schmidt

University of Maryland

F. G. Schroeder

Karlsruhe Institute of Technology (KIT)

University of Delaware

L. Schumacher

University of Erlangen-Nuremberg (FAU)

S. Schwirn

RWTH Aachen University

S. Sclafani

University of Maryland

D. Seckel

University of Delaware

L. Seen

University of Wisconsin Madison

M. Seikh

University of Kansas

S. Seunarine

University of Wisconsin

P. A. Sevle Myhr

Universite catholique de Louvain

R. Shah

Drexel University

S. Shefali

Karlsruhe Institute of Technology (KIT)

N. Shimizu

Chiba University

B. Skrzypek

University of California

R. Snihur

University of Wisconsin Madison

J. Soedingrekso

University of Copenhagen

D. Soldin

University of Utah

P. Soldin

RWTH Aachen University

G. Sommani

Ruhr-Universität Bochum

C. Spannfellner

Technical University of Munich

G. M. Spiczak

University of Wisconsin

C. Spiering

Deutsches Elektronen-Synchrotron (DESY)

J. Stachurska

Ghent university

M. Stamatikos

Ohio State University

T. Stanev

University of Delaware

T. Stezelberger

Lawrence Berkeley National Laboratory

T. Stuerwald

Bergische Universität Wuppertal

G. W. Sullivan

University of Maryland

I. Taboada

Georgia Institute of Technology

S. Ter-Antonyan

Southern University and A&M College

A. Terliuk

Technical University of Munich

A. Thakuri

South Dakota School of Mines & Technology

M. Thiesmeyer

University of Wisconsin Madison

W. G. Thompson

Harvard University

J. Thwaites

University of Wisconsin Madison

S. Tilav

University of Delaware

K. Tollefson

Michigan State University

S. Toscano

Université libre de Bruxelles (ULB)

D. Tosi

University of Wisconsin Madison

A. Trettin

Deutsches Elektronen-Synchrotron (DESY)

A. K. Upadhyay

University of Wisconsin Madison

Institute of Physics Bhubaneswar

K. Upshaw

Southern University and A&M College

A. Vaidyanathan

Marquette University

University of Wisconsin Madison

N. Valtonen-Mattila

Ruhr-Universität Bochum

J. Valverde

Marquette University

J. Vandenbroucke

University of Wisconsin Madison

T. Van Eeden

Deutsches Elektronen-Synchrotron (DESY)

N. van Eijndhoven

Vrije Universiteit Brussel (VUB)

J. van Santen

Deutsches Elektronen-Synchrotron (DESY)

J. Vara

University of Münster

F. Varsi

Karlsruhe Institute of Technology (KIT)

M. Venugopal

Karlsruhe Institute of Technology (KIT)

M. Vereecken

Universite catholique de Louvain

S. Vergara Carrasco

University of Canterbury

S. Verpoest

University of Delaware

D. Veske

Columbia University

A. Vijai

University of Maryland

University of Wisconsin Madison

J. Villarreal

Massachusetts Institute of Technology (MIT)

C. Walck

Stockholm University

A. Wang

Georgia Institute of Technology

E. Warrick

University of Alabama

C. Weaver

Michigan State University

P. Weigel

Massachusetts Institute of Technology (MIT)

A. Weindl

Karlsruhe Institute of Technology (KIT)

A. Y. Wen

Harvard University

C. Wendt

University of Wisconsin Madison

J. Werthebach

University of Copenhagen

M. Weyrauch

Karlsruhe Institute of Technology (KIT)

N. Whitehorn

Michigan State University

C. H. Wiebusch

RWTH Aachen University

D. R. Williams

University of Alabama

L. Witthaus

University of Copenhagen

M. Wolf

Technical University of Munich

G. Wrede

University of Erlangen-Nuremberg (FAU)

X. W. Xu

Southern University and A&M College

J. P. Yanez

University of Alberta

Y. Yao

University of Wisconsin Madison

E. Yildizci

University of Wisconsin Madison

S. Yoshida

Chiba University

R. Young

University of Kansas

F. Yu

Harvard University

S. Yu

University of Utah

T. Yuan

University of Wisconsin Madison

A. Zegarelli

Ruhr-Universität Bochum

S. Zhang

Michigan State University

Z. Zhang

State University of New York

P. Zhelnin

Harvard University

P. Zilberman

University of Wisconsin Madison

A. D. Hincks

Vatican Observatory

University of Toronto

X. Ma

Beijing University of Technology

C. Vargas

Texas A&M University

C. Hervias-Caimapo

Pontificia Universidad Catolica de Chile

E. S. Battistelli

Sapienza University of Rome

K. Huffenberger

Texas A&M University

University of Pennsylvania

Florida State University

J. Mcmahon

Fermi National Accelerator Laboratory

University of Chicago

S. Naess

University of Oslo

J. Orlowski-Scherer

University of Pennsylvania

B. Partridge

Haverford College

Cristobal Sifon

Pontificia Universidad Católica de Valparaíso

E. J. Wollack

National Aeronautics and Space Administration (NASA)

Astrophysical Journal

0004-637X (ISSN) 1538-4357 (eISSN)

Vol. 999 1 98

Subject Categories (SSIF 2025)

Astronomy, Astrophysics, and Cosmology

Subatomic Physics

DOI

10.3847/1538-4357/ae31e2

More information

Latest update

4/30/2026