Multi-wavelength analysis of the PeVatron candidate LHAASO J2108+5157 - INSPIRE

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Multi-wavelength analysis of the PeVatron candidate LHAASO J2108+5157

CTA LST Project

Collaboration

Jul 25, 2023

10 pages

Published in:

PoS ICRC2023 (2023) 727

Contribution to:

- ICRC2023
, 727

Published: Jul 25, 2023

DOI:

10.22323/1.444.0727

Experiments:

CTA

reference search2 citations

Citations per year

Abstract: (SISSA)

LHAASO J2108+5157 is a recently discovered source, detected in the Ultra-High-Energy band by the LHAASO collaboration. Two molecular clouds were identified in the direction coincident with LHAASO J2108+5157 and, from the spectra reported by LHAASO, there is no sign of an energy cutoff up to 500 TeV. This source makes a promising galactic PeVatron candidate.In 2021, the Large-Sized Telescope prototype (LST-1)of the Cherenkov Telescope Array (CTA) Observatory, collected about 50 hours of quality-selected data on LHAASO J2108+5157. Through these observations, we managed to compute stringent upper limits on the source emission in the multi-TeV band. Together with the analysis of XMM-Newton data and 12 years of Fermi-LAT data, we performed a multi-wavelength study of the source, investigating different possible scenarios of particle acceleration.In this contribution, we will present the results of the analysis, as well as the multi-wavelength modeling, and consequent interpretation of different possible scenarios of emission.

particle: acceleration
LHAASO
Cherenkov Telescope Array
cosmic radiation: UHE
gamma ray: UHE
cloud
observatory
Cherenkov counter: water
X-ray
TeV

References(20)

Figures(0)

[1]

The origin of Galactic cosmic rays: challenges to the standard paradigm

Stefano Gabici
(
- APC, Paris
)
,
Carmelo Evoli
(
- GSSI, Aquila
)
,
Daniele Gaggero
(
- Madrid, IFT
)
,
Paolo Lipari
(
- INFN, Rome
)
,
Philipp Mertsch
(
- Aachen, Tech. Hochsch.
)

et al.

- Int.J.Mod.Phys.D 28 (2019) 15, 1930022
•
e-Print:
- 1903.11584
•
DOI:
- 10.1142/S0218271819300222

[2]

Diffusive Shock Acceleration in Radiation Dominated Environments

G. Vannoni
(
- Heidelberg, Max Planck Inst.
)
,
S. Gabici
(
- Dublin Inst.
)
,
F.A. Aharonian
(
- Heidelberg, Max Planck Inst. and
- Dublin Inst.
)

- Astron.Astrophys. 497 (2008) 17-26
•
e-Print:
- 0803.1138
•
DOI:
- 10.1051/0004-6361/200809744

[3]

Ultra-high energy Inverse Compton emission from Galactic electron accelerators

et al.

- Astrophys.J.Lett. 908 (2021) 2, L49
•
e-Print:
- 2010.13960
•
DOI:
- 10.3847/2041-8213/abe41a

[4]

Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 $\gamma$ -ray Galactic sources

LHAASO

Collaboration

•

Zhen Cao

et al.

- Nature 594 (2021) 7861, 33-36
•
DOI:
- 10.1038/s41586-021-03498-z

[5]

Discovery of the Ultrahigh-energy Gamma-Ray Source LHAASO J2108+5157

LHAASO

Collaboration

•

Zhen Cao
(
- Beijing, Inst. High Energy Phys. and
- Beijing, GUCAS and
- TIANFU CRRC, Chengdu and
- University Coll., Dublin and
- Hefei, CUST
)

et al.

- Astrophys.J.Lett. 919 (2021) 2, L22
•
e-Print:
- 2106.09865
•
DOI:
- 10.3847/2041-8213/ac2579

[6]

Multi-wavelength study of the galactic PeVatron candidate LHAASO J2108+5157

CTA-LST

Collaboration

•

S. Abe
(
- Tokyo U., ICRR
)

et al.

- Astron.Astrophys. 673 (2023) A75
•
e-Print:
- 2210.00775
•
DOI:
- 10.1051/0004-6361/202245086

[7]

Apr

R. Lopez-Coto
,
T. Vuillaume
,
A. Moralejo
,
F. Cassol
,
M. Nöthe

et al.

•
DOI:
- 10.5281/zenodo.6458862

[8]

Gammapy - A prototype for the CTA science tools

Christoph Deil
(
- Heidelberg, Max Planck Inst.
)
,
Roberta Zanin
(
- Heidelberg, Max Planck Inst.
)
,
Julien Lefaucheur
(
- LUTH, Meudon
)
,
Catherine Boisson
(
- LUTH, Meudon
)
,
Bruno Khélifi
(
- APC, Paris
)

et al.

- PoS ICRC2017 (2018) 766
•
e-Print:
- 1709.01751
•
DOI:
- 10.22323/1.301.0766

[9]

Incremental Fermi Large Area Telescope Fourth Source Catalog

Fermi-LAT

Collaboration

•

Soheila Abdollahi
(
- IRAP, Toulouse
)

et al.

- Astrophys.J.Supp. 260 (2022) 2, 53
•
e-Print:
- 2201.11184
•
DOI:
- 10.3847/1538-4365/ac6751

[9]

Incremental Fermi Large Area Telescope Fourth Source Catalog

Fermi-LAT

Collaboration

•

Soheila Abdollahi
(
- IRAP, Toulouse
)

et al.

- Astrophys.J.Supp. 260 (2022) 2, 53
•
e-Print:
- 2201.11184
•
DOI:
- 10.3847/1538-4365/ac6751

[10]

Low-scatter galaxy cluster mass proxies for the eROSITA all-sky survey

et al.

e-Print:
- 2009.03944
•
DOI:
- 10.21105/astro.2009.03944

[11]

834 57

M.-A. Miville-Deschênes
,
N. Murray
,
E.J. Lee

•
e-Print:
- 1610.05918

[12]

The Milky Way in molecular clouds: A New complete co survey

- Astrophys.J. 547 (2001) 792-813
•
e-Print:
- astro-ph/0009217
•
DOI:
- 10.1086/318388

[13]

The CO-to- $H_2$ Conversion Factor

- Ann.Rev.Astron.Astrophys. 51 (2013) 207-268
•
e-Print:
- 1301.3498
•
DOI:
- 10.1146/annurev-astro-082812-140944

[14]

naima: a Python package for inference of relativistic particle energy distributions from observed nonthermal spectra

Víctor Zabalza

- PoS ICRC2015 (2016) 922,
•
e-Print:
- 1509.03319
•
DOI:
- 10.22323/1.236.0922

[15]

The H.E.S.S. Galactic plane survey

HESS

Collaboration

•

H. Abdalla
(
- Potchefstroom U.
)

et al.

- Astron.Astrophys. 612 (2018) A1
•
e-Print:
- 1804.02432
•
DOI:
- 10.1051/0004-6361/201732098

[16]

Gamma-ray haloes around pulsars as the key to understanding cosmic-ray transport in the Galaxy

Rubén López-Coto
(
- INFN, Padua and
- IAA, Granada
)
,
Emma de Oña Wilhelmi
(
- DESY, Zeuthen
)
,
Felix Aharonian
(
- Heidelberg, Max Planck Inst. and
- Dublin Inst.
)
,
Elena Amato
(
- Arcetri Observ. and
- INFN, Florence
)
,
Jim Hinton
(
- Heidelberg, Max Planck Inst.
)

- Nature Astron. 6 (2022) 2, 199-206
•
e-Print:
- 2202.06899
•
DOI:
- 10.1038/s41550-021-01580-0

[17]

Constraining the Magnetic Field in the TeV Halo of Geminga with X-Ray Observations

Ruo-Yu Liu
(
- DESY, Zeuthen
)
,
Chong Ge
(
- Purple Mountain Observ. and
- U. Alabama, Huntsville
)
,
Xiao-Na Sun
(
- Nanjing U., Dept. Astron.
)
,
Xiang-Yu Wang
(
- Nanjing U., Dept. Astron.
)

- Astrophys.J. 875 (2019) 2, 149
•
e-Print:
- 1904.11438
•
DOI:
- 10.3847/1538-4357/ab125c

[18]

Exploring particle escape in supernova remnants through gamma rays

S. Celli
(
- Heidelberg, Max Planck Inst. and
- GSSI, Aquila
)
,
G. Morlino
(
- Arcetri Observ. and
- GSSI, Aquila
)
,
S. Gabici
(
- APC, Paris
)
,
F.A. Aharonian
(
- Heidelberg, Max Planck Inst. and
- GSSI, Aquila and
- Dublin Inst.
)

- Mon.Not.Roy.Astron.Soc. 490 (2019) 3, 4317-4333
•
e-Print:
- 1906.09454
•
DOI:
- 10.1093/mnras/stz2897

[19]

Unified model for the gamma-ray emission of supernova remnants

- Astrophys.J. 761 (2012) 133
•
e-Print:
- 1203.0085
•
DOI:
- 10.1088/0004-637X/761/2/133