NEUTRON STARS AND NEBULAE

Habitats for Photons, Cosmic Rays, and Other Animals

A conference celebrating the lifetime contributions of Alice Harding and Isabelle Grenier.

NEUTRON STARS AND NEBULAE

Habitats for Photons, Cosmic Rays, and Other Animals

A conference celebrating the lifetime contributions of Alice Harding and Isabelle Grenier

About the Conference

9 - 14 August 2026

Skukuza, Kruger National Park, South Africa

A meeting to foster deep engagement between communities studying pulsars,  pulsar wind nebulae (PWNe) and supernova remnants (SNRs) and those investigating their connections to cosmic rays, gravitational waves and neutrinos.

Selected Contributions

The Scientific Organising Committee (SOC) has reviewed all submitted abstracts and selected the contributions for presentation at the conference.

Registration and Accommodation

Ready to register?

Registration is managed via our official conference organiser, Tourvest Meetings & Incentives.

Accommodation

Accommodation is managed via our official conference organiser, Tourvest Meetings & Incentives and will be allocated in a staggered fashion. Please direct enquiries to info@nsn-knp2026.org.za

Rationale

The science of pulsar-related systems is progressing rapidly, driven by major instrumental and computational advances. Hosting a high-energy conference focusing on neutron stars and their environments in the Kruger National Park offers a timely opportunity to bring together international experts, theorists and observers working across the electromagnetic spectrum and in multi-messenger domains. Recent discoveries with, e.g., MeerKAT, FAST, NICER, Chandra, the Fermi LAT, H.E.S.S. and LHAASO telescopes have deepened our understanding of pulsar-related systems, revealing multipolar magnetic fields, yielding constraints on the neutron star equation of state, extended TeV halos, ultra-high-energy emission from pulsar wind nebulae (PWNe), and pulsed gamma-ray emission in the TeV band. We also look forward to the contributions that will be made by current experiments as well as by the DSA-2000, SKA, IXPE, future MeV satellites, SWGO, the CTAO and HAWC, among others. This meeting will foster engagement between communities studying pulsars, PWNe, magnetars, fast radio bursts (FRBs) and supernova remnants (SNRs) and those investigating their connections to cosmic rays, gravitational waves (including pulsar timing arrays) and
neutrinos.

South Africa and Regional Context
South Africa, with its strong regional observational infrastructure – including the MeerKAT radio telescope, SALT optical telescope, and H.E.S.S. Cherenkov Array in Namibia – offers an ideal setting for this meeting. By convening international experts in high-energy neutron star systems in the Kruger National Park, the meeting will facilitate collaboration between theorists and observers from both hemispheres and across subdisciplines.

This will be the third in a series of conferences hosted in the Kruger National Park. The previous editions were:

Towards a Major Atmospheric Čerenkov Detector – V

Berg-en-Dal
13–17 Aug 1997

The Cosmic Kaleidoscope – Pulsars and Their Nebulae, Supernova Remnants and More

Skukuza
13–17 Aug 2012
(In memory of Okkie de Jager)

With this third event, we will celebrate the lifetime professional contribution to gamma-ray astronomy of internationally renowned gamma-ray and pulsar physicists Alice Harding and Isabelle Grenier, on the joyous occasion of the 75th birthday of Alice and the retirement of Isabelle.

We are actively pursuing sponsorships in order to make the conference accessible and affordable for early-career scientists. There will be a maximum of 100 participants, with about 20 of them being students / postdocs / junior members. 

Honourees

Alice-400-reduced

Dr. Alice Harding

Los Alamos National Laboratory, Los Alamos, USA

Alice Harding was an Astrophysicist in the Astrophysics Science Division at NASA Goddard Space Flight Center from 1980 to 2020, after earning her PhD from the University of Massachusetts–Amherst in 1979. She retired from NASA and continues as a Visiting Scientist in the Theoretical Division at Los Alamos National Laboratory since 2020. Her interests include millisecond and canonical pulsars as well as highly magnetised neutron stars (magnetars). She has been modelling gamma-ray pulsars for 45 years and wrote one of the first papers in this field. She and Okkie de Jager (KNP2012 conference honouree) predicted the high-energy spectrum of the Crab Nebula that was later detected by high-energy and very-high energy telescopes.

A Fellow of the American Physical Society, she received the NASA Medal for Exceptional Scientific Achievement (1994, 2012), the John C. Lindsay Award (2012), and the AAS Rossi Prize (2013). 

She is a member of the NICER Science Team and Fermi LAT Collaboration, continuing to contribute to pulsar and high-energy astrophysics research.

Isabelle-400-reduced

Dr. Isabelle Grenier

AIM, CEA–Saclay / Université Paris-Cité

Isabelle Grenier, a professor at Université Paris-Cité, conducts research in astrophysics at AIM CEA–Saclay. An expert in high-energy astrophysics and the interstellar medium, she earned her PhD in astrophysics in 1988 at Université Paris-Diderot, focusing on analysis methods for sparse photon data, on gamma-ray pulsars and mapping molecular clouds in the Milky Way. Her results on phase-resolved spectroscopy of gamma-ray pulsars provided early clues to particle acceleration in their magnetospheres. She identified pulsars and their wind nebulae as dominant sources of Galactic gamma rays and discovered large reserves of dark gas as well as cocoons of young cosmic rays in our Galaxy. 

As a member of the Fermi LAT Collaboration, she continues to advance our understanding of gamma rays and cosmic rays in the Milky Way.

In 2022, the French Academy of Sciences CNES prize was awarded to her.

SOC

Matthew-400-reduced

Dr. Matthew Baring (co-chair)

William Marsh Rice University, Houston, USA

Christo-400-reduced

Prof. Christo Venter (co-chair)

North-West University, Potchefstroom, South Africa

Alice-400-reduced

Dr. Alice Harding

Los Alamos National Laboratory, Los Alamos,
USA

Isabelle-400-reduced

Dr. Isabelle Grenier

AIM, CEA–Saclay / Université Paris-Cité,
France

Patrizia Caraveo Final

Dr. Patrizia Caraveo

INAF – Istituto di Astrofisica
Spaziale e Fisica Cosmica di Milano, Milan,
Italy

Diego Torres final

Prof. Diego Torres

Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona,
Spain

Emma

Dr. Emma de Oña Wilhelmi

Deutsches Elektronen-Synchrotron (DESY), Zeuthen, Germany

Samar Safi-Harb Final

Prof. Samar Safi-Harb

University of Manitoba,
Canada

Zorawar-Wadiasingh

Dr. Zorawar Wadiasingh

NASA GSFC / University of Maryland College Park,
USA

Benoit Cerutti Final

Dr. Benoît Cerutti

CNRS, IPAG, Université Grenoble Alpes,
France

Alex Hill Final

Dr. Alex Hill

University of British Columbia, Okanagan,
Canada

Marisa Geyer Final

Dr. Marisa Geyer

 University of Cape Town,
South Africa

LOC

Christo-400-reduced

Prof. Christo Venter
(co-chair)

North-West University, Potchefstroom, South Africa

Monica Barnard

Dr. Monica Barnard
(co-chair)

North-West University, Potchefstroom, South Africa

Johan

Prof. Johan van der Walt

North-West University, Potchefstroom, South Africa

Elanie

Elanie van Rooyen

Administration

North-West University, Potchefstroom,
South Africa

Ashleigh Koortzen Final

Ashleigh Koortzen

Senior Liaison Officer: FNAS

North-West University, Potchefstroom,
South Africa

Dimakatso (DJ) Maheso

Dimakatso “DJ” Maheso

Student Representative

North-West University, Potchefstroom,
South Africa

Kimbal Schutt Final

Kimbal Schutt

PCO

TOURVEST,
Cape Town, South Africa

E de Jager

Dr. Estie Nel-De Jager

Website and Design

Dara Media and Marketing, George,
South Africa

Invited Speakers

  • Paz Beniamini, Open University, Israel
  • Jarek Dyks, Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Poland
  • Joseph Gelfand, NYU, Abu Dhabi
  • Marisa Geyer, University of Cape Town, South Africa
  • Lucas Guillemot, University de Orléans / Observatoire de Paris, France
  • Jason Hessels,  McGill University, Canada / Anton Pannekoek Institute for Astronomy, University of Amsterdam & ASTRON, The Netherlands
  • Constantinos Kalapotharakos, NASA Goddard Space Flight Center, USA
  • Matthew Kerr, Naval Research Laboratory, USA
  • Di Li, Tsinghua University, China
  • Marcus Lower, Swinburne University, Australia
  • Cole Miller, University of Maryland, USA
  • Jérôme Pétri, University of Strasbourg, France
  • Bettina Posselt, University of Oxford, Oxford, UK
  • Samar Safi-Harb, University of Manitoba, Canada
  • Pat Slane, Harvard-Smithsonian Center for Astrophysics, USA
  • Andrey Timokhin, Zelona Gora University, Poland
  • Manu Linares, Norwegian University of Science and Technology, Trondheim, Norway

Timeline

January 1, 2026
First Circular

Announcement, information and dates

February 14, 2026
Second Circular

Additional Information, abstract submission guidelines

March 25, 2026
Third Circular
Tourvest Registration Portal opens
April 10, 2026
Closing date for abstracts

New extended deadline for abstract submissions (oral and poster presentations) and student funding applications.

April 24, 2026
Anouncement of selected talks / Posters

A scientific  programme containing accepted talks / posters will be published on the website.

A block science programme will be available on the website soon after.

Accommodation portal opens
May 15, 2026
Early-bird registration Deadline

Discounted registration rates available until this date

June 15, 2026
Registration Deadline

Final date to register for conference attendance

August 9-14, 2026
Conference

Meeting at Skukuza, Kruger National Park

Venue

Kruger National Park
Established in 1926, the Kruger National Park is one of Africa’s largest and most celebrated wildlife reserves. Covering nearly 20,000 km² in the north-eastern region of South Africa, it hosts an exceptional diversity of ecosystems, more than 500 bird species, and the iconic Big Five. The park is a model of world-class conservation and offers visitors a rare opportunity to experience the rich natural heritage of southern Africa.

Please note that daily conservation fees will apply to international participants, in accordance with South African National Parks (SANParks) regulations.

Skukuza Rest Camp
Skukuza, the largest rest camp in Kruger, serves as the park’s administrative headquarters and a vibrant hub for visitors. Situated on the banks of the Sabie River, it offers a wide range of facilities including conference venues, accommodation, restaurants and research resources. Its location and infrastructure make it an ideal setting for scientific meetings while providing direct access to the park’s remarkable wildlife and landscapes.

Accommodation

For more details on the venue, accommodation options and surrounding area, please visit the About the Venue page.

The organisers made a block booking of 65 single and 5 double rooms at the Skukuza Lodge. It is possible to upgrade from a single to double room at extra cost at the Skukuza Lodge.

Shared, more affordable accommodation is also available (15 bungalow rooms shared by two persons per bungalow).  Ad hoc requests should be sent to the organisers at the conference email.

Although we highly recommend making use of the pre-booked accommodation, own arrangements may be made apart from the block booking; one option would be the Protea Hotel at Kruger Gate.

The accommodation booking portal link will be available here from 24 April 2026.

Travel

Most international delegates will arrive in South Africa via O.R. Tambo International Airport (Johannesburg). From there, the most convenient option is a domestic flight to Skukuza Airport (SZK), located inside Kruger National Park.

Alternatively, delegates may choose to rent a vehicle at O.R. Tambo and drive to Skukuza (approximately 5 – 6 hours), offering flexibility to explore the region before or after the conference.

Comprehensive travel guidance, including flight options and regional alternatives, is available on the Travel Information page.

Abstracts

Abstract submission for the conference is handled via a dedicated online form available on the conference website.

The submission period runs from February 15 to March 10, 2026, after which abstracts will be reviewed by the Scientific Organising Committee.

Notification of accepted talks and posters is expected by April 15, 2026.

Please consult the abstract submission page for detailed guidelines and requirements.

Final assignment of presentation type will be made by the (SOC).

Registration

The early-bird registration fee of R9 000 per person (around USD560) will be valid from March 25 until May 15, 2026.

Thereafter the registration fee will be R10 500 until  June 15, 2026  (or when we’ve reached capacity).

The registration fee covers

  • the conference venue and infrastructure hire,
  • conference packs,
  • daily lunches with beverages,
  • two daily coffees / teas and snacks,
  • poster sessions,
  • the welcoming reception
  • the gala dinner.

Not included are

  • airfare,
  • accommodation,
  • South African conservation fees,
  • transport in South Africa and
  • game drives.

Registration for the conference will be managed via dedicated online portals operated by Tourvest Meetings & Incentives, our professional conference organiser.

All registration-related matters, including

  • registration fees,
  •  accommodation selection,
  • optional extras and
  • registration of accompanying persons,

will be handled by Tourvest.

The Tourvest Accommodation Portal will open on April 24, 2026

The Tourvest Registration Portal  is now open:

Conference Organiser

TOURVEST

Meetings, Incentives, Conferences and Exhibition

Cape Town, South Africa

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Registration, accommodation, and travel arrangements will be handled by Tourvest. As soon as registration opens, a portal to Tourvest will be available on this website.

Code of Conduct

We are committed to creating a professional, respectful, and welcoming environment for all participants. This meeting is intended to be collegial, inclusive, and supportive, where everyone can contribute and feel valued.

  • Respect and Inclusion
    Participants are expected to treat one another with courtesy, consideration, and mutual respect. Our community thrives when diverse perspectives are heard and appreciated.
  • Safe Environment
    Discrimination, harassment, or retaliation of any kind have no place here. We ask that participants avoid inappropriate actions or comments related to personal characteristics such as age, race, ethnicity, sexual orientation, gender identity or expression, marital status, nationality, political affiliation, ability status, or educational background.
  • Positive Participation
    Please help maintain a constructive atmosphere by engaging thoughtfully, respectfully, and avoiding disruptive behaviour.
  • Addressing Concerns
    If you experience or observe behaviour that does not align with this Code, we encourage you to share your concerns with the meeting organisers. They will review reports carefully and respond appropriately, which may include a reminder, a formal warning, or other necessary steps to ensure the safety and comfort of all participants.
  • Commitment
    By registering for this conference, delegates affirm their agreement to uphold these standards and contribute to a respectful and inclusive experience for everyone.
  • Compliance with SANParks Regulations
    All delegates entering Kruger National Park will adhere strictly to SANParks rules and guidelines. These regulations are in place to ensure the safety of both visitors and wildlife. Please note that the organisers cannot be held responsible for any injuries, accidents, or loss of property that may occur during your visit.

Funding Support

We are actively pursuing sponsorships in order to make the conference accessible and affordable for early-career scientists. We have secured a sponsorship to waive the registration fee of 12 South African students.

We hope to also subsidise travel and accommodation, subject to attracting more sponsorships.

Please keep an eye on our website for more information regarding the available level of support and application process.

Student funding applications (deadline: April 10,  2026)

Students applying for funding must complete these two steps by April 10, 2026.

  1. Abstract submission
    Students must first submit a scientific abstract via the standard abstract submission process. After submission, an abstract reference number will be sent to the applicant by email.

  2. Funding application
    Once the abstract has been submitted and the reference number received, students must complete the student funding application form, in which they will be required to:

    • Enter their abstract reference number

    • Provide a brief motivation (approximately five lines) explaining why funding is required

    • Indicate the amount of funding requested

Funding applications will only be considered if an abstract has been submitted.

The Scientific Organising Committee (SOC) will review the abstracts, after which the Local Organising Committee (LOC) will make final funding decisions based on academic merit and motivation. Applicants’ email addresses are essential, as all further communication regarding funding will take place via email. 

Sponsors

We would like to thank the following generous sponsors*:

North-West University

South African Radio Astronomy Observatory

National Institute of Theoretical and Computational Sciences

NIThecs Logo

SA-GAMMA Consortium

SA-Gamma Logo

Department of Science Technology & Innovation

Fermi Gamma Ray Telescope

South African Tourism

NWU Centre for Space Research

*We are currently liaising with these sponsors as to the potential levels of support they can provide.

Accompanying persons

Accompanying persons are very welcome.

The registration portal will allow one to add the following expenses:

  • Gala Dinner at R1 800 and
  • Welcoming Function at R600.


All other costs, including travel, accommodation, conservation fee, breakfast, lunch, dinner, game drives, and snacks will be for the account of the accompanying person.

 We urge delegates to register their accompanying persons on the portal as soon as it opens. We plan to issue a single invoice, including registration fee, accommodation, and accompanying person costs.

Before you Travel

Payments and Currency in South Africa

The currency used in South Africa is the South African Rand (ZAR). Credit and debit cards (Visa and Mastercard in particular) are widely accepted in hotels, restaurants, shops, and at most tourism-related facilities, including within Kruger National Park. Contactless and chip-enabled cards are standard. While small amounts of cash may be useful for minor purchases, tips, or smaller vendors, visitors generally do not need to carry large sums of cash.

 
Internet & Connectivity

Internet access will be available within the conference facilities.

A dedicated Wi-Fi network will be provided for conference use in the main meeting venues to support presentations and general academic activities (but probably not suitable for large data uploads or downloads).

Wi-Fi availability outside the conference venues may vary, and mobile data is recommended as a supplementary option for personal use. 

Mobile data for personal use

For personal communication and practical use such as WhatsApp, email, light internet browsing, and navigation to and within the park, delegates may find mobile data to be a convenient supplementary option during their stay.

Vodacom and MTN provide 3G/4G coverage in the Skukuza area, with generally good signal strength within the rest camp.

International delegates may purchase a local SIM card at OR Tambo International Airport upon arrival, or use an international eSIM service (such as Airalo, Nomad, or Holafly). Mobile data should be considered a supplementary option for personal communication and not a replacement for the dedicated internet provided within conference venues.

Offline maps are recommended when travelling within the park.

Power sockets & electricity

South Africa uses a 220–230 V / 50 Hz electricity supply. The standard wall socket is the three-pin South African plug (Type M).

Many hotels and conference venues, including facilities at Skukuza, provide multi-standard sockets that can accommodate European two-pin plugs. However, this cannot be guaranteed in all rooms or buildings.

Delegates are therefore advised to bring a universal travel adapter or a South Africa (Type M) plug adapter for their electronic devices. These can be obtained at OR Tambo Airport.

Offline maps and navigation apps

Delegates may find the following apps useful, depending on their device, as they provide offline maps and practical information for navigating within Kruger National Park. Availability and functionality may vary by device and app version.

  • KrugerGuide (Android Only) – offline park maps, roads, rest camps, and facilities

  • Maps.me (Android & iOS) – offline navigation and basic mapping within the park

Conservation Fees & Wild Cards

All visitors to Kruger National Park are required to pay a daily conservation fee. The fee is charged per person, per day, regardless of the number of times you enter or exit the park during your stay. Fees vary depending on nationality (International, SADC, or South African resident).

For international visitors, the current daily conservation fee is R602 per person per day (subject to change). The SANParks Wild Card (International – All Parks Cluster, Individual) currently costs R4 680, which covers  unlimited access to all participating SANParks national parks and is valid for 12 months from date of purchase.

Delegates planning to stay eight days or longer may wish to consider purchasing a SANParks Wild Card, which may be more cost-effective for extended stays.

A link for the pre-purchase of SANParks Wild Cards will be provided to help avoid delays during on-site registration. Please ensure that you select the correct category:

  • South African [SA]

  • Southern African Development Community [SADC]

  • International visitor

Please note that the selected category will affect the price. Purchasing a Wild Card for the duration of your stay is typically more cost-effective than paying the daily Conservation Fee and will also facilitate smoother entry into the Park.

 For information on SANParks Conservation Fees and  Wild Cards categories (including options for couples and families, please refer to the SANParks Website.

Malaria Advisory

Kruger National Park is located in a malaria-risk area, although the risk is generally low and seasonal. Delegates are advised to consult a healthcare professional or travel clinic well in advance of travel to determine whether malaria prophylaxis is recommended based on individual circumstances. The Kruger park had above-average rainfall and wide-spread flooding this summer, increasing the number of mosquitos in the Park.

As an additional precaution, the use of mosquito repellent and wearing long sleeves and trousers during the early morning and evening hours is advised.

Visitor-focused information is available from SANParks and medical information here. We advise delegates to consult their doctor or medical practitioner on this matter

Climate

While daytime temperatures in Kruger National Park are generally mild to warm during winter, early morning and evening temperatures can be surprisingly cold. Guided game drives typically depart before sunrise or return after sunset, and are conducted in open safari vehicles, where wind exposure can significantly increase the chill factor. During the winter months, early morning temperatures may drop to single digits (°C), particularly in June, July, and August.

Delegates are strongly advised to pack warm layers, including:

  • A warm jacket or fleece

  • A beanie or scarf

  • Gloves for early morning drives

These layers can easily be removed later in the day as temperatures rise.

What to Pack

Recommended Packing List:

  • Camera (with spare batteries or memory cards)

  • Binoculars (highly recommended for game and bird viewing)

  • Field guides for wildlife and bird identification

  • Mosquito repellent

  • Malaria medication, where prescribed or recommended

  • Comfortable walking shoes, preferably closed (especially for nature walks or daytime activities)

  • Hat and sunscreen for daytime outdoor activities or walking