Radio detection of SNR G310.7–5.4 with gamma-ray counterpart

Christopher Burger-Scheidlin; Brianna D. Ball; Sanja Lazarević; Roland Kothes; Robert Brose; Jonathan Mackey; Miroslav D. Filipović; Zachary J. Smeaton; Andrew M. Hopkins; Dennis Leahy; Jennifer L. West; Tayyaba Zafar

doi:10.22323/1.501.0588

Radio detection of SNR G310.7–5.4 with gamma-ray counterpart

Christopher Burger-Scheidlin, Brianna D. Ball, Sanja Lazarević, Roland Kothes, Robert Brose, Jonathan Mackey, Miroslav D. Filipović, Zachary J. Smeaton, Andrew M. Hopkins, Dennis Leahy, Jennifer L. West, Tayyaba Zafar

School of Mathematical and Physical Sciences

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Abstract

Supernova remnants (SNRs) are known to accelerate particles up to relativistic energies. We have recently discovered a new SNR, G310.7–5.4 at high Galactic latitude using the ASKAP’s EMU and POSSUM surveys at 943.5 MHz [1]. The faint, extended object has an apparent size of 30.6^′×30.6^′ and shows the typical SNR bilateral shell structure. Strong linear polarisation is detected from the bilateral shell regions. It is also one of the faintest known radio SNRs. Furthermore, a spatially coincident gamma-ray source is detected, indicating that the SNR could be accelerating particles to high energies. SNRs at high Galactic latitudes, such as the one presented here, have received attention in recent years as more of them are detected off the Galactic plane. Discovering these objects together with their gamma-ray counterparts can put a new perspective on such sources as these SNRs are expanding in rather unperturbed, low-density environments, with diminished risk of source confusion. This allows to study cosmic ray (CR) acceleration and constrain CR models.

Original language	English
Article number	588
Pages (from-to)	1-7
Number of pages	7
Journal	Proceedings of Science
Volume	501
DOIs	https://doi.org/10.22323/1.501.0588
Publication status	Published - 30 Dec 2025
Event	39th International Cosmic Ray Conference, ICRC 2025 - Geneva, Switzerland Duration: 15 Jul 2025 → 24 Jul 2025

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© Copyright owned by the author(s). Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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title = "Radio detection of SNR G310.7–5.4 with gamma-ray counterpart",

abstract = "Supernova remnants (SNRs) are known to accelerate particles up to relativistic energies. We have recently discovered a new SNR, G310.7–5.4 at high Galactic latitude using the ASKAP{\textquoteright}s EMU and POSSUM surveys at 943.5 MHz [1]. The faint, extended object has an apparent size of 30.6′×30.6′ and shows the typical SNR bilateral shell structure. Strong linear polarisation is detected from the bilateral shell regions. It is also one of the faintest known radio SNRs. Furthermore, a spatially coincident gamma-ray source is detected, indicating that the SNR could be accelerating particles to high energies. SNRs at high Galactic latitudes, such as the one presented here, have received attention in recent years as more of them are detected off the Galactic plane. Discovering these objects together with their gamma-ray counterparts can put a new perspective on such sources as these SNRs are expanding in rather unperturbed, low-density environments, with diminished risk of source confusion. This allows to study cosmic ray (CR) acceleration and constrain CR models.",

author = "Christopher Burger-Scheidlin and Ball, \{Brianna D.\} and Sanja Lazarevi{\'c} and Roland Kothes and Robert Brose and Jonathan Mackey and Filipovi{\'c}, \{Miroslav D.\} and Smeaton, \{Zachary J.\} and Hopkins, \{Andrew M.\} and Dennis Leahy and West, \{Jennifer L.\} and Tayyaba Zafar",

note = "{\textcopyright} Copyright owned by the author(s). Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.; 39th International Cosmic Ray Conference, ICRC 2025 ; Conference date: 15-07-2025 Through 24-07-2025",

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doi = "10.22323/1.501.0588",

language = "English",

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T1 - Radio detection of SNR G310.7–5.4 with gamma-ray counterpart

AU - Burger-Scheidlin, Christopher

AU - Ball, Brianna D.

AU - Lazarević, Sanja

AU - Kothes, Roland

AU - Brose, Robert

AU - Mackey, Jonathan

AU - Filipović, Miroslav D.

AU - Smeaton, Zachary J.

AU - Hopkins, Andrew M.

AU - Leahy, Dennis

AU - West, Jennifer L.

AU - Zafar, Tayyaba

N1 - © Copyright owned by the author(s). Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2025/12/30

Y1 - 2025/12/30

N2 - Supernova remnants (SNRs) are known to accelerate particles up to relativistic energies. We have recently discovered a new SNR, G310.7–5.4 at high Galactic latitude using the ASKAP’s EMU and POSSUM surveys at 943.5 MHz [1]. The faint, extended object has an apparent size of 30.6′×30.6′ and shows the typical SNR bilateral shell structure. Strong linear polarisation is detected from the bilateral shell regions. It is also one of the faintest known radio SNRs. Furthermore, a spatially coincident gamma-ray source is detected, indicating that the SNR could be accelerating particles to high energies. SNRs at high Galactic latitudes, such as the one presented here, have received attention in recent years as more of them are detected off the Galactic plane. Discovering these objects together with their gamma-ray counterparts can put a new perspective on such sources as these SNRs are expanding in rather unperturbed, low-density environments, with diminished risk of source confusion. This allows to study cosmic ray (CR) acceleration and constrain CR models.

AB - Supernova remnants (SNRs) are known to accelerate particles up to relativistic energies. We have recently discovered a new SNR, G310.7–5.4 at high Galactic latitude using the ASKAP’s EMU and POSSUM surveys at 943.5 MHz [1]. The faint, extended object has an apparent size of 30.6′×30.6′ and shows the typical SNR bilateral shell structure. Strong linear polarisation is detected from the bilateral shell regions. It is also one of the faintest known radio SNRs. Furthermore, a spatially coincident gamma-ray source is detected, indicating that the SNR could be accelerating particles to high energies. SNRs at high Galactic latitudes, such as the one presented here, have received attention in recent years as more of them are detected off the Galactic plane. Discovering these objects together with their gamma-ray counterparts can put a new perspective on such sources as these SNRs are expanding in rather unperturbed, low-density environments, with diminished risk of source confusion. This allows to study cosmic ray (CR) acceleration and constrain CR models.

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U2 - 10.22323/1.501.0588

DO - 10.22323/1.501.0588

M3 - Conference paper

AN - SCOPUS:105029054588

SN - 1824-8039

VL - 501

SP - 1

EP - 7

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 588

T2 - 39th International Cosmic Ray Conference, ICRC 2025

Y2 - 15 July 2025 through 24 July 2025

ER -

Radio detection of SNR G310.7–5.4 with gamma-ray counterpart

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