Focus on:
All sessions
CTA-Oz Session
Discussion
Hide Contributions
Indico style
Indico style - inline minutes
Indico style - numbered
Indico style - numbered + minutes
Indico Weeks View
Back to Conference View
Choose Timezone
Use the event/category timezone
Specify a timezone
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
Africa/Banjul
Africa/Bissau
Africa/Blantyre
Africa/Brazzaville
Africa/Bujumbura
Africa/Cairo
Africa/Casablanca
Africa/Ceuta
Africa/Conakry
Africa/Dakar
Africa/Dar_es_Salaam
Africa/Djibouti
Africa/Douala
Africa/El_Aaiun
Africa/Freetown
Africa/Gaborone
Africa/Harare
Africa/Johannesburg
Africa/Juba
Africa/Kampala
Africa/Khartoum
Africa/Kigali
Africa/Kinshasa
Africa/Lagos
Africa/Libreville
Africa/Lome
Africa/Luanda
Africa/Lubumbashi
Africa/Lusaka
Africa/Malabo
Africa/Maputo
Africa/Maseru
Africa/Mbabane
Africa/Mogadishu
Africa/Monrovia
Africa/Nairobi
Africa/Ndjamena
Africa/Niamey
Africa/Nouakchott
Africa/Ouagadougou
Africa/Porto-Novo
Africa/Sao_Tome
Africa/Tripoli
Africa/Tunis
Africa/Windhoek
America/Adak
America/Anchorage
America/Anguilla
America/Antigua
America/Araguaina
America/Argentina/Buenos_Aires
America/Argentina/Catamarca
America/Argentina/Cordoba
America/Argentina/Jujuy
America/Argentina/La_Rioja
America/Argentina/Mendoza
America/Argentina/Rio_Gallegos
America/Argentina/Salta
America/Argentina/San_Juan
America/Argentina/San_Luis
America/Argentina/Tucuman
America/Argentina/Ushuaia
America/Aruba
America/Asuncion
America/Atikokan
America/Bahia
America/Bahia_Banderas
America/Barbados
America/Belem
America/Belize
America/Blanc-Sablon
America/Boa_Vista
America/Bogota
America/Boise
America/Cambridge_Bay
America/Campo_Grande
America/Cancun
America/Caracas
America/Cayenne
America/Cayman
America/Chicago
America/Chihuahua
America/Ciudad_Juarez
America/Costa_Rica
America/Creston
America/Cuiaba
America/Curacao
America/Danmarkshavn
America/Dawson
America/Dawson_Creek
America/Denver
America/Detroit
America/Dominica
America/Edmonton
America/Eirunepe
America/El_Salvador
America/Fort_Nelson
America/Fortaleza
America/Glace_Bay
America/Goose_Bay
America/Grand_Turk
America/Grenada
America/Guadeloupe
America/Guatemala
America/Guayaquil
America/Guyana
America/Halifax
America/Havana
America/Hermosillo
America/Indiana/Indianapolis
America/Indiana/Knox
America/Indiana/Marengo
America/Indiana/Petersburg
America/Indiana/Tell_City
America/Indiana/Vevay
America/Indiana/Vincennes
America/Indiana/Winamac
America/Inuvik
America/Iqaluit
America/Jamaica
America/Juneau
America/Kentucky/Louisville
America/Kentucky/Monticello
America/Kralendijk
America/La_Paz
America/Lima
America/Los_Angeles
America/Lower_Princes
America/Maceio
America/Managua
America/Manaus
America/Marigot
America/Martinique
America/Matamoros
America/Mazatlan
America/Menominee
America/Merida
America/Metlakatla
America/Mexico_City
America/Miquelon
America/Moncton
America/Monterrey
America/Montevideo
America/Montserrat
America/Nassau
America/New_York
America/Nome
America/Noronha
America/North_Dakota/Beulah
America/North_Dakota/Center
America/North_Dakota/New_Salem
America/Nuuk
America/Ojinaga
America/Panama
America/Paramaribo
America/Phoenix
America/Port-au-Prince
America/Port_of_Spain
America/Porto_Velho
America/Puerto_Rico
America/Punta_Arenas
America/Rankin_Inlet
America/Recife
America/Regina
America/Resolute
America/Rio_Branco
America/Santarem
America/Santiago
America/Santo_Domingo
America/Sao_Paulo
America/Scoresbysund
America/Sitka
America/St_Barthelemy
America/St_Johns
America/St_Kitts
America/St_Lucia
America/St_Thomas
America/St_Vincent
America/Swift_Current
America/Tegucigalpa
America/Thule
America/Tijuana
America/Toronto
America/Tortola
America/Vancouver
America/Whitehorse
America/Winnipeg
America/Yakutat
Antarctica/Casey
Antarctica/Davis
Antarctica/DumontDUrville
Antarctica/Macquarie
Antarctica/Mawson
Antarctica/McMurdo
Antarctica/Palmer
Antarctica/Rothera
Antarctica/Syowa
Antarctica/Troll
Antarctica/Vostok
Arctic/Longyearbyen
Asia/Aden
Asia/Almaty
Asia/Amman
Asia/Anadyr
Asia/Aqtau
Asia/Aqtobe
Asia/Ashgabat
Asia/Atyrau
Asia/Baghdad
Asia/Bahrain
Asia/Baku
Asia/Bangkok
Asia/Barnaul
Asia/Beirut
Asia/Bishkek
Asia/Brunei
Asia/Chita
Asia/Choibalsan
Asia/Colombo
Asia/Damascus
Asia/Dhaka
Asia/Dili
Asia/Dubai
Asia/Dushanbe
Asia/Famagusta
Asia/Gaza
Asia/Hebron
Asia/Ho_Chi_Minh
Asia/Hong_Kong
Asia/Hovd
Asia/Irkutsk
Asia/Jakarta
Asia/Jayapura
Asia/Jerusalem
Asia/Kabul
Asia/Kamchatka
Asia/Karachi
Asia/Kathmandu
Asia/Khandyga
Asia/Kolkata
Asia/Krasnoyarsk
Asia/Kuala_Lumpur
Asia/Kuching
Asia/Kuwait
Asia/Macau
Asia/Magadan
Asia/Makassar
Asia/Manila
Asia/Muscat
Asia/Nicosia
Asia/Novokuznetsk
Asia/Novosibirsk
Asia/Omsk
Asia/Oral
Asia/Phnom_Penh
Asia/Pontianak
Asia/Pyongyang
Asia/Qatar
Asia/Qostanay
Asia/Qyzylorda
Asia/Riyadh
Asia/Sakhalin
Asia/Samarkand
Asia/Seoul
Asia/Shanghai
Asia/Singapore
Asia/Srednekolymsk
Asia/Taipei
Asia/Tashkent
Asia/Tbilisi
Asia/Tehran
Asia/Thimphu
Asia/Tokyo
Asia/Tomsk
Asia/Ulaanbaatar
Asia/Urumqi
Asia/Ust-Nera
Asia/Vientiane
Asia/Vladivostok
Asia/Yakutsk
Asia/Yangon
Asia/Yekaterinburg
Asia/Yerevan
Atlantic/Azores
Atlantic/Bermuda
Atlantic/Canary
Atlantic/Cape_Verde
Atlantic/Faroe
Atlantic/Madeira
Atlantic/Reykjavik
Atlantic/South_Georgia
Atlantic/St_Helena
Atlantic/Stanley
Australia/Adelaide
Australia/Brisbane
Australia/Broken_Hill
Australia/Darwin
Australia/Eucla
Australia/Hobart
Australia/Lindeman
Australia/Lord_Howe
Australia/Melbourne
Australia/Perth
Australia/Sydney
Canada/Atlantic
Canada/Central
Canada/Eastern
Canada/Mountain
Canada/Newfoundland
Canada/Pacific
Europe/Amsterdam
Europe/Andorra
Europe/Astrakhan
Europe/Athens
Europe/Belgrade
Europe/Berlin
Europe/Bratislava
Europe/Brussels
Europe/Bucharest
Europe/Budapest
Europe/Busingen
Europe/Chisinau
Europe/Copenhagen
Europe/Dublin
Europe/Gibraltar
Europe/Guernsey
Europe/Helsinki
Europe/Isle_of_Man
Europe/Istanbul
Europe/Jersey
Europe/Kaliningrad
Europe/Kirov
Europe/Kyiv
Europe/Lisbon
Europe/Ljubljana
Europe/London
Europe/Luxembourg
Europe/Madrid
Europe/Malta
Europe/Mariehamn
Europe/Minsk
Europe/Monaco
Europe/Moscow
Europe/Oslo
Europe/Paris
Europe/Podgorica
Europe/Prague
Europe/Riga
Europe/Rome
Europe/Samara
Europe/San_Marino
Europe/Sarajevo
Europe/Saratov
Europe/Simferopol
Europe/Skopje
Europe/Sofia
Europe/Stockholm
Europe/Tallinn
Europe/Tirane
Europe/Ulyanovsk
Europe/Vaduz
Europe/Vatican
Europe/Vienna
Europe/Vilnius
Europe/Volgograd
Europe/Warsaw
Europe/Zagreb
Europe/Zurich
GMT
Indian/Antananarivo
Indian/Chagos
Indian/Christmas
Indian/Cocos
Indian/Comoro
Indian/Kerguelen
Indian/Mahe
Indian/Maldives
Indian/Mauritius
Indian/Mayotte
Indian/Reunion
Pacific/Apia
Pacific/Auckland
Pacific/Bougainville
Pacific/Chatham
Pacific/Chuuk
Pacific/Easter
Pacific/Efate
Pacific/Fakaofo
Pacific/Fiji
Pacific/Funafuti
Pacific/Galapagos
Pacific/Gambier
Pacific/Guadalcanal
Pacific/Guam
Pacific/Honolulu
Pacific/Kanton
Pacific/Kiritimati
Pacific/Kosrae
Pacific/Kwajalein
Pacific/Majuro
Pacific/Marquesas
Pacific/Midway
Pacific/Nauru
Pacific/Niue
Pacific/Norfolk
Pacific/Noumea
Pacific/Pago_Pago
Pacific/Palau
Pacific/Pitcairn
Pacific/Pohnpei
Pacific/Port_Moresby
Pacific/Rarotonga
Pacific/Saipan
Pacific/Tahiti
Pacific/Tarawa
Pacific/Tongatapu
Pacific/Wake
Pacific/Wallis
US/Alaska
US/Arizona
US/Central
US/Eastern
US/Hawaii
US/Mountain
US/Pacific
UTC
Save
Australia/Sydney
English (United Kingdom)
Deutsch (Deutschland)
English (United Kingdom)
English (United States)
Español (España)
Français (France)
Polski (Polska)
Português (Brasil)
Türkçe (Türkiye)
Čeština (Česko)
Монгол (Монгол)
Українська (Україна)
中文 (中国)
Login
CTA-Oz Meeting #2 2022
Wednesday, 30 November 2022 -
10:00
Monday, 28 November 2022
Tuesday, 29 November 2022
Wednesday, 30 November 2022
10:30
CTA Status
-
Gavin Rowell
(
School of Physical Sciences, University of Adelaide
)
CTA Status
Gavin Rowell
(
School of Physical Sciences, University of Adelaide
)
10:30 - 10:50
I will present an update on the status of CTA.
10:50
Towards CTAO's 1st Science Data Challenge
-
Sabrina Einecke
(
The University of Adelaide, Australia
)
Towards CTAO's 1st Science Data Challenge
Sabrina Einecke
(
The University of Adelaide, Australia
)
10:50 - 11:10
CTAO's first Science Data Challenge (SDC) us currently in preparation. It will provide simulated science-ready (DL3) data products of a complex and realistic gamma-ray sky. The main objectives are to enable a broad scientific community to become familiar with the CTAO data products and scientific analysis tools, to serve as a test bed to for driving forward new algorithms and to verify processes. As a secondee of the SDC technical team, I'm preparing the observation schedule in correspondence with the different science group leaders. In this talk, I will introduce the SDC and give an overview of the science to be simulated.
11:10
CTA-Pol update: Plans and Designs
-
Nick Tothill
(
Western Sydney University
)
CTA-Pol update: Plans and Designs
Nick Tothill
(
Western Sydney University
)
11:10 - 11:30
Optical polarimetry is an identified area in which Australia can contribute to CTA. We are planning to construct a prototype polarimeter to be installed on one or more Australian optical telescopes. I will summarise the rationale for the project, give an update on our progress on potential telescope collaborators, and discuss the design process for the instrument.
11:30
Morning Tea
Morning Tea
11:30 - 12:00
12:00
Investigating a Stereo Trigger in a Small IACT Array
-
Simon Lee
(
School of Physical Sciences, University of Adelaide
)
Investigating a Stereo Trigger in a Small IACT Array
Simon Lee
(
School of Physical Sciences, University of Adelaide
)
12:00 - 12:10
An Imaging Air Cherenkov Telescope (IACT) site in Australia, as part of a worldwide network of IACTs, would be crucial for achieving 24-hour all-sky coverage of the GeV to TeV sky for transient followup and continuous source monitoring. Extending on previous work which compared the performance of different small IACT array configurations, the effect of implementing a stereoscopic trigger to these arrays has been studied. Only selecting events that simultaneously trigger multiple telescopes at once allows the trigger threshold to be reduced without increasing unwanted triggers from the night sky background. This lower trigger threshold can lead to more detected low-energy events, improving the observation of transient events which are typically far brighter at lower (GeV) energies. This talk will describe how the stereo trigger was fairly implemented, present the resulting changes in performance, and outline current research into implementing a topological trigger.
12:10
Likelihood-Free Inference applied to CTA
-
Tristan Betterman
(
The University of Adelaide
)
Likelihood-Free Inference applied to CTA
Tristan Betterman
(
The University of Adelaide
)
12:10 - 12:20
12:20
The TeV Diffuse Gamma-ray Emission: Time Variability and Prospects for Future Detection
-
Peter Marinos
(
University of Adelaide
)
The TeV Diffuse Gamma-ray Emission: Time Variability and Prospects for Future Detection
Peter Marinos
(
University of Adelaide
)
12:20 - 12:30
We use the simulation software "GALPROP" to model the Milky Way's diffuse TeV gamma-ray emission and how the diffuse emission will vary over time. We compare GALPROP's predictions to observational data, investigating how the emission will impact the forthcoming CTA Observatory's Galactic plane survey.
12:30
Gamma-ray and Neutrino Emission from Supernova Remnants and Molecular Clouds
-
Ryan Burley
(
The University of Adelaide
)
Gamma-ray and Neutrino Emission from Supernova Remnants and Molecular Clouds
Ryan Burley
(
The University of Adelaide
)
12:30 - 12:35
High-energy gamma rays and neutrinos can be produced due to the hadronic interactions between protons escaping particle accelerators such as supernova remnants (SNRs) and nearby target material such as molecular clouds (MCs). By modelling the diffusion of protons escaping SNRs and interacting with nearby MCs in our Galaxy, we can predict the resulting gamma-ray and neutrino fluxes at Earth. Looking towards MCs as production sites for neutrinos may help identify Galactic neutrino sources, as previous searches primarily look at the sites of cosmic-ray accelerators. Observing either the gamma rays or neutrinos at large energies can also point towards Galactic PeVatrons. In this contribution, we will introduce a 3D modelling to calculate the gamma-ray and neutrino fluxes expected from hadronic interactions between all possible combinations of SNRs and MCs in our Galaxy. We will present a list of SNR and MC combinations that, under the right conditions, could produce a gammaray flux above 100TeV observable by the Cherenkov Telescope Array (CTA). These combinations also produce neutrino fluxes that may be observable by future neutrino detectors such as IceCube-Gen2 and KM3NeT.
12:35
Modelling the transport of electrons towards HESS J1825-137
-
Tiffany Collins
(
The University of Adelaide
)
Modelling the transport of electrons towards HESS J1825-137
Tiffany Collins
(
The University of Adelaide
)
12:35 - 12:40
HESS J1825-137 is one of the most powerful and luminous TeV gamma-ray pulsar wind nebulae (PWN). This makes HESS J1825-137 an excellent laboratory to study particle transportation in and around the powering pulsar. We have modelled the diffusive and advective transport of electrons from the powering pulsar, PSR 1826-1334. The resulting X-ray and gamma-ray emission was predicted through interactions with a 3D grid of interstellar medium gas (ISM), soft photon fields and a spatially varying magnetic field. We have also investigated the gamma-ray contamination of nearby HESS J18226-130 by HESS J1825-137
12:40
Update on CTA Dark Matter Reach
-
Csaba Balazs
(
School of Physics and Astronomy, Monash University
)
Update on CTA Dark Matter Reach
Csaba Balazs
(
School of Physics and Astronomy, Monash University
)
12:40 - 13:00
In our Bayesian WIMP detection project, we're refining our results published in 2112.10371.
13:00
Lunch
Lunch
13:00 - 13:40
13:40
A Compound Poisson Generator approach to Point-Source Inference in Astrophysics
-
Gabriel Collin
(
The University of Adelaide
)
A Compound Poisson Generator approach to Point-Source Inference in Astrophysics
Gabriel Collin
(
The University of Adelaide
)
13:40 - 14:00
I will present a new statistical approach to the problem of inferring the properties of point-source populations. This method will be shown to be superior to existing methods in the context of X-ray astronomy.
14:00
Millisecond pulsars in the globular cluster Omega Centauri
-
Shi Dai
(
Western Sydney University
)
Millisecond pulsars in the globular cluster Omega Centauri
Shi Dai
(
Western Sydney University
)
14:00 - 14:20
The globular cluster Omega Centauri is the most massive and luminous cluster in the Galaxy. The gamma-ray source FL8Y 1326.7-4729 is coincident with the core of the cluster, leading to speculation that hitherto unknown radio pulsars or annihilating dark matter may be present in the cluster core. We discovered five millisecond pulsars (MSPs) in Omega Centauri and have been monitoring these pulsars with the Parkes telescope. We show that all five pulsars are located within the core region of the cluster and four of them are associated with X-ray sources. While no gamma-ray pulsation has been detected, their association with X-ray sources strongly suggests that MSPs in the core of Omega Centauri contribute a significant fraction of the detected gamma-ray emission.
14:20
The peculiar gamma-ray phenomenology of Terzan 5
-
Roland Crocker
(
Research School of Astronomy and Astrophysics, Australian National University
)
The peculiar gamma-ray phenomenology of Terzan 5
Roland Crocker
(
Research School of Astronomy and Astrophysics, Australian National University
)
14:20 - 14:40
Terzan 5 has the largest population of millisecond pulsars of any globular cluster in the Galaxy. It is also unique in having an associated TeV source. The centroid of the TeV source, however, is measurably displaced away from the cluster. I will discuss a scenario motivated by cosmic ray transport physics than explains this peculiar displacement.
14:40
Afternoon Tea
Afternoon Tea
14:40 - 15:10
15:10
Short Update on Nova Detection Prospects
-
Ashley Ruiter
(
University of New South Wales Canberra
)
Short Update on Nova Detection Prospects
Ashley Ruiter
(
University of New South Wales Canberra
)
15:10 - 15:20
A brief update on the status of very high energy gamma ray detection from novae with the CTA will be given.
15:20
ORCs and Other New Wonders of Radio Surveys
-
Miroslav Filipovic
(
Western Sydney University
)
ORCs and Other New Wonders of Radio Surveys
Miroslav Filipovic
(
Western Sydney University
)
15:20 - 15:40
This is an exciting time for the discovery of SNRs in our and other nearby galaxies. I will report the discovery of J0624-6948, a low-surface brightness radio ring, lying between the Galactic Plane and the Large Magellanic Cloud (LMC). It was first detected at 888 MHz with the Australian Square Kilometre Array Pathfinder (ASKAP), and with a diameter of ~196 arcsec. This source has phenomenological similarities to odd radio circles (ORCs). Significant differences to the known ORCs - a flatter radio spectral index, the lack of a prominent central galaxy as a possible host, and a larger apparent size - suggest that J0624-6948 may be a different type of object. We argue that the most plausible explanation for J0624-6948 is an intergalactic supernova remnant due to a star that resided in the LMC outskirts that had undergone a single-degenerate type Ia supernova, and we are seeing its remnant expand into a rarefied, intergalactic environment.
15:40
Potoroo PWN
-
Sanja Lazarevic
(
Western Sydney University
)
Potoroo PWN
Sanja Lazarevic
(
Western Sydney University
)
15:40 - 16:00
Pulsars lose rotational energy through a wind of ultrarelativistic particles, and the synchrotron emission that arises will be observable in the form of a pulsar wind nebula (PWN). For a pulsar moving supersonically through the ambient medium, the PWN is characterised by a bow-shock shape around the pulsar and cometary tail. Currently, there are approximately 30 objects of this type, and Potoroo is one of them. I report on the recent discovery of Potoroo and its radio and X-ray properties.
16:00
Updates from University of Adelaide Students
-
Sabrina Einecke
(
The University of Adelaide, Australia
)
Gavin Rowell
(
School of Physical Sciences, University of Adelaide
)
Updates from University of Adelaide Students
Sabrina Einecke
(
The University of Adelaide, Australia
)
Gavin Rowell
(
School of Physical Sciences, University of Adelaide
)
16:00 - 16:10
16:10
Break / Further Questions
Break / Further Questions
16:10 - 16:30
16:30
16:30 - 17:25
19:00
Dinner - British Hotel
Dinner - British Hotel
19:00 - 21:00