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Announcements of Upcoming Meetings
Notice that this list is not meant to be all-inclusive, but concentrates on meetings of potential interest to X-ray, gamma-ray, cosmic-ray, and gravitational astrophysicists. The HEASARC also maintains a list of upcoming high-energy astrophysics summer schools, a list of on-line proceedings of high-energy astrophysics meetings, as well as a list of on-line proceedings of high-energy astrophysics summer schools.
Updates, corrections, and/or suggestions about meetings should be sent to the HEASARC Help Desk.
High Energy Astrophysics
A working model for outbursts in dwarf novae was proposed by Prof. Yoji Osaki in 1974, which is currently known as the disk instability model. We are celebrating the 50th anniversary of the invention of this model by organizing an international workshop.
This workshop aims to review the history of the development of the disk instability model, understand the essential physics, and share the latest research results with participants.
We hope that this workshop will help young researchers set the direction for future research. Also, this workshop will provide smooth communication between senior leading researchers and young researchers & students.
For additional questions, please see the conference website.
MMC2025: Multi-phase, Multi-temperature, and Complex. How Feedback Shapes the Nature of the CGM, Halo Gas, and Galaxies from Galaxy Groups to Clusters
The mechanisms driving galaxy evolution — AGN and stellar feedback — remain central to our understanding of how baryons are redistributed in collapsed structures. Despite significant progress, our theoretical models continue to diverge, particularly when predicting the gas content and star formation activity in low-mass halos, the circum-galactic medium (CGM), and the evolution of central galaxies across different environments. Feedback processes, in particular, play a critical role, with varying effects depending on the scale of the system, from individual galaxies in low-mass halos to massive galaxy clusters.
MMC2025 will bring together experts to address these challenges, focusing on the latest observational results and state-of-the-art hydrodynamic simulations. We will explore the multi-phase, multi-temperature nature of the CGM and its complex interplay with AGN feedback, gas inflow, and star formation across diverse environments —from bright clusters at high redshifts to low-mass halos. The workshop will highlight key observational datasets, including X-ray, SZ, and IFU data, as well as advancements in radio and submillimeter observations, offering fresh insights into the gas and feedback processes shaping galaxies.
Join us in Olbia, Italy, to discuss how these feedback mechanisms drive the evolution of galaxies and clusters, with a special focus on the role of AGN feedback in low-mass halos and its effect on gas content and star formation. MMC2025 will be a unique opportunity to combine cutting-edge observational data with theoretical models to advance our understanding of large-scale structure and galaxy formation and evolution.
We look forward to your participation in this exciting scientific event!
SOC:
Paola Popesso (chair); Ilaria Marini; Marcella Brusa; Dylan Nelson; Klaus Dolag; Paolo Tozzi; Stefano Ettori; Esra Bulbul; Veronica Biffi; Veronica Strazzullo; Eleonora Sani; Silvia Bonoli; Lorenzo Lovisari; Celine Peroux; Celine Gouin; Fabio Gastaldello
LOC:
Ilaria Marini; Paola Popesso; Denisa Tako; Victoria Toptun; Natan de Isidio; Daudi Mazengo
For additional questions, please see the conference website.
The X-Ray Imaging and Spectroscopy Mission (XRISM), launched on September 7th, 2023, is a collaborative mission between JAXA and NASA, with contributions from over 70 institutions in Japan, the U.S., Canada, and Europe. With the successful combination of high-resolution spectroscopy and wide-field imaging, XRISM has provided us with an unprecedented view of the Universe, opening a new era of high-energy astronomy.
This conference will highlight the scientific achievements from the first two years of XRISM and identify key issues we should address in the next observation cycles. Conference topics also cover theoretical studies related to XRISM observations and synergies with other observatories, including future missions.
This is the first international conference for XRISM, launched in September 2023. Conference topics will include:
- Formation of the largest structures in the Universe
- Chemical evolution of the Universe
- Active galactic nuclei and their environment
- Endpoints of stellar evolution
- Accretion and outflow in compact objects
- New physics with high-resolution X-ray spectroscopy
- XRISM for multi-wavelength/multi-messenger astronomy
October is a good season in Kyoto with nice weather and full of tourists, so please make your hotel reservations as early as possible if you are planning to attend. The venue is within walking distance of Kyoto Station.
We look forward to seeing you there. Save the date!
For additional questions, please see the conference website.
*** SAVE THE DATE ***
We are pleased to announce the 4th TDAMM Workshop: Advancing Community Observing Plans for Rapid Follow-Up of Explosive Transients will be held October 27-30, 2025 in Huntsville, Alabama.
NASA's new Astrophysics Cross-Observatory Science Support (ACROSS) initiative is organizing the 4th Time Domain and Multi-Messenger Astrophysics (TDAMM) Workshop. This workshop will focus on developing community observing plans to enable the rapid and coordinated follow-up of explosive transients by space-based and ground-based observatories. NASA invites US and international members of the ground and space science communities to attend the workshop and contribute to its final product, a publicly available white paper with findings for relevant agencies and the broader astrophysics community.
If you are interested in attending and/or would like to be on our email list to receive further updates please fill out the following Google form here.
Please visit the website for additional information.
Active galactic nuclei (AGN) are among the most dynamic and powerful sources in the universe, powered by supermassive black holes (SMBHs) through mass accretion. The accretion rate influences many AGN properties, with high accretion rates playing a key role in growing black holes and launching outflows that may shape the host galaxy's growth. Highly accreting AGN, particularly at low redshift, offer a benchmark to understand the rapid growth of the first SMBHs in the early Universe, which remains a mystery to be solved.
Significant theoretical and observational advancements have been made in understanding fast-accreting systems, thanks to long-running observatories like VLT, ALMA, JVLA, Chandra, XMM, HST, and NuSTAR, as well as the recently launched JWST, Euclid, and IXPE. With the first light of the ELT on the horizon and the recent results from JWST on the growth of SMBH at high redshift, now is the ideal time to convene and share insights on highly accreting SMBHs. The workshop will gather astronomers to summarize the field's current status, bridging the accretion history from the early to the local Universe, and explore the mechanisms driving their growth and impact on the Universe.
This workshop will focus on the following key themes:
- NLS1s and other low-z highly accreting AGN and their cosmological implications;
- Outflows, jets, feedback in highly accreting sources from the nearby Universe to cosmic dawn;
- Surrounding environment and host galaxy properties of highly accreting AGN at all epochs;
- Theoretical and observational advances in the nuclear properties of extreme accreting AGN from low-z to high-z;
- Changing-look, tidal disruption event and their implication in changing the accretion state of AGN;
- Recent progress in the study of QSOs at high-z and AGN evolution;
- Recent observations with state-of-the-art facilities (JWST, ALMA, XMM-Newton), future observations with new facilities (Vera Rubin, Athena, ELT, SKA, 4MOST, AXIS, PRIMA), theoretical modeling and AI.
For additional questions, please email to agn2025_loc[AT]eso[DOT]org or check out the conference website.
The 33rd Texas Symposium on Relativistic Astrophysics will take place in the vibrant city of Tempe, AZ, from December 8 – 12, 2025. The event will be hosted at The Omni Hotel, very near Arizona State University, which offers state-of-the-art facilities to ensure a productive and enjoyable meeting.
We are thrilled to announce that John Mather, Jim Peebles, Adam Riess, George Smoot (TBC), and Frank Wilczek have already agreed to participate and attend the symposium.
Beyond the symposium, Tempe in December offers a perfect blend of outdoor adventures and festive activities, making it an ideal winter getaway. The mild temperatures invite visitors to explore the scenic beauty of Tempe Town Lake, hike the iconic Hayden Butte, or stroll through the Desert Botanical Garden. You can also experience the Tempe Fantasy of Lights Boat Parade, a dazzling display of holiday lights along the lake. The city hosts various seasonal events, including holiday markets, outdoor concerts, and ice skating rinks, offering attendees a chance to enjoy the warm desert climate while celebrating the holiday season.
The symposium will cover all major topics on high-energy and particle astrophysics, cosmology, and relativity. It will include morning plenary sessions and afternoon parallel sessions, which will function as mini-symposia in each sub-field. The plenary sessions will consist of ~45-minute review talks. The afternoon sessions will feature oral talks (about 15-30 minutes) and poster contributions. Registration will open in early May.
We will be hosting a major international workshop on black hole accretion and jet formation at The University of Oxford between March 23-27, 2026. Our goal is to address the scaling of these phenomena across the mass and accretion rate spectra. We will consider all aspects of accreting black holes, including black hole transients, X-ray binaries, tidal disruption events, active galactic nuclei and the role of black hole accretion physics in cosmological simulations.
We aim to bring a new perspective to these problems, and hope to bring together the above diverse communities which too rarely intersect, and to do so in an engaging and efficient way.
We will have an in-person capacity of around 100, and to stream all talks and discussions online for free.
SOC: Rob Fender, Sera Markoff, Francesca Panessa, Jiri Svoboda, Erin Kara (to be expanded)
To express interest and be added to the mailing list for the meeting, please send a simple email to: blackholes2026[AT]physics[DOT]ox[DOT]ac[DOT]uk
For additional questions, please see the conference website.
Save the Date! More information coming soon!
The symposium is the seventh meeting in the series "The X-ray Universe".
This conference series is aimed at encompassing a broad range of high-energy astrophysics topics, from solar system studies to cosmology and at providing a showcase for results and discoveries from XMM-Newton as well as from the variety of other current missions. The scientific potential of future mission projects and the evolution of the scientific analysis landscape will be further topics for discussion.
For additional questions, please see the conference website.Other Astronomy, Physics and Space Sciences Meetings
In 2025, the HERA workshop series, which is generously supported by the Wilhelm and Else Heraeus Foundation, will carry on with its mission by organizing the next workshop in Pisa, Italy. These workshops serve as a platform for early career scientists to receive training, engage in interactive discussions, conceptualize research projects, broaden their perspectives, and initiate international collaborations.
The third workshop in this series is scheduled for the week of September 22nd-26th, 2025, and will be hosted at the Scuola Normale Superiore (SNS) in Pisa, Italy. The theme is "The Physics of Galaxies at the Epoch of Reionization." This workshop series, organized by the European Astronomical Society (EAS) and supported by the Heraeus Foundation, aims to provide young researchers with a stimulating environment to broaden their perspectives, foster collaborations, and develop essential soft skills.
The EAS extends an invitation to early-career scientists, defined as those with less than 5 years of post-PhD experience (including PhD students who are close to defending their theses), and who are affiliated with European Research Institutes and Universities, to submit their applications. We especially encourage researchers in the fields of galaxy formation and evolution in the early Universe to apply.
It's important to note that there is no registration fee, and the WE Heraeus Foundation and the other partners will cover the local expenses for all participants. A limited number of travel grants may also be available; to inquire about these, please contact the Local Organizing Committee at hera25[AT]sns[DOT]it.
Attendees will have ample opportunities to showcase their research, initiate collaborations with local scholars from SNS and other Italian Astronomical Institutes, and engage with distinguished invited senior review speakers. Every day of the workshop will feature one presentation delivered by accomplished senior scientists. The scheduled lectures are as follows:
- 22. Sept: S. Tacchella (University of Cambridge), "Observational probes of the earliest galaxies"
- 23. Sept: D. Schaerer (Universite de Geneve), "First stars and stellar populations"
- 24. Sept: L. Vallini (INAF, Bologna), "The interstellar medium of galaxies in the epoch of reionization"
- 25. Sept: R. Herrera-Camus (Universidad de Concepcion), "Early galaxy: Kinematics, mergers, and outflows"
- 26. Sept: V. Bromm (University of Texas), "Theory of early galaxy formation"
For additional questions and registration link, please see the conference website.
GWPAW is an annual gathering for the gravitational-wave community, bringing together researchers from across physics, astronomy, and cosmology. The workshop covers a broad spectrum of topics, including detection methods, observational results, multi-messenger counterparts, and the scientific implications of gravitational-wave discoveries.
We are excited to announce that GWPAW 2025 will take place in person at the Exhibition Hall on the Georgia Tech campus, centrally located in vibrant midtown Atlanta. The workshop will run from December 1–4, 2025. We look forward to welcoming you to Atlanta this December!
For additional questions, please see the conference website.
As we enter the era of multi-wavelength and multi-messenger surveys with rich but disparate datasets, there is a growing need to revisit the software infrastructure required to push the limits of time-domain science. Building on the legacy from the past decades of optical time-domain surveys, the Vera C. Rubin Observatory has opened its eye to the dynamic sky and will unleash a wave of millions of alerts per night. High-energy space missions such as Fermi and the Neil Gehrels Swift Observatory are capturing the most energetic astrophysical explosions. The Nancy Grace Roman Space Telescope, which will launch no later than May 2027, is set to unveil the transient universe in the infrared (IR). New surveys on the horizon such as DSA-2000 and ULTRASAT will push our multi-wavelength survey coverage into the radio and near-UV. Now is therefore the ideal time to revisit and address the software infrastructure needed to pursue breakthrough science enabled by low-latency alerts, multi-wavelength/messenger discovery, machine learning, and science platforms / alert brokers / marshals.
We invite the time-domain community to a four-day Hot-wiring the Transient Universe meeting hosted by the RAPID Project Infrastructure Team at Caltech. In this meeting, we will address the following key questions:
- What have we learned from existing alert streams and Rubin alerts?
- Are we ready for alerts from Roman and beyond?
- How do we optimize transient discovery with multi-wavelength and multi-messenger alert streams?
- How do we effectively utilize machine learning for time-domain science?
- What physics of stellar explosions/eruptions/variability can be revealed with rapid, multi-wavelength/messenger observations?
The science topics in the meeting will focus on relativistic explosions, stellar variables, supermassive black hole transients, IR / “gap” transients, and supernovae.
The meeting will occur March 23 through 26, 2026. A list of invited speakers will be provided soon. Registration and abstract submission will be open in Early October 2025.
If you have any questions, you can email us at rapid[AT]ipac[DOT]caltech[DOT]edu.
SOC: Ryan Lau (co-chair, Caltech/IPAC), Matthew Graham (co-chair, Caltech), Azalee Bostroem (U Arizona), Ilaria Caiazzo (Inst. Sci. Tech., Austria), Wen-Fai Fong (Northwestern), Sebastian Gomez (U Texas, Austin), Mansi Kasliwal (Caltech), Ashish Mahabal (Caltech), Anais Moller (Swinburne U., Australia), Rob Seaman (U Arizona)
LOC: Schuyler Van Dyk (chair), Frank Aragon, Wendy Burt, David Imel, Jacob Jencson, Sean Kindt, Ryan Lau
For additional questions, please see the conference website.
In the modern era, time-domain observations are one of the main driving forces in astronomy, with the proliferation of large all-sky surveys, fast-response instrumentation, and global multi-wavelength and multi-messenger networks dedicated to catching astrophysical transient events. In the near future, we will be probing the Universe much deeper and in finer detail than ever before, with the unprecedented light-gathering power and angular resolution promised by the next generation of extremely large telescopes. As we are entering this exciting new era, transient astrophysics must also seize new opportunities by exploring hitherto uncharted regions of parameter space – in depth, time cadence, wavelength coverage, and spectroscopic and spatial resolution – and by leveraging cutting-edge technologies and instrumentation, along with novel techniques in observations, theory, and analysis. A strong synergy between observations and theory will certainly drive the field forward.
The landscape of observational astronomy in 2026 and onwards will be a thriving habitat for transient astrophysics. By that time, the Legacy Survey of Space and Time (LSST) at the Vera Rubin Observatory will have started science operations and delivered its first discoveries. This will be concurrent with new transient-optimized instrumentation such as the Son of X-Shooter (SOXS) spectrograph on the ESO New Technology Telescope (NTT). At that time, the community will also be preparing for the LIGO/Virgo/KAGRA O5 observing run with improved capabilities for gravitational wave detections, planned to start in 2027. Within a short couple of years, around 2028, the ESO Extremely Large Telescope (ELT), the first of the giant telescopes, will be commissioned and thus open completely unprecedented opportunities for observations in terms of depth and spatial resolution. During the very active period preceding and following 2026, a number of other facilities, many with significant components for time-domain astronomy, will be commissioned or launched, resulting in an unprecedented coverage of most of the electromagnetic spectrum – and more – by the mid-2030s. These include the Cherenkov Telescope Array (CTA) at very high-energy gamma rays; the Square Kilometer Array (SKA) in the radio; new space missions including UVEX and ULTRASAT in the ultraviolet; the Roman Space Telescope in the optical and near-infrared; THESEUS and NewAthena missions in the high energy domain; and the Laser Interferometer Space Antenna (LISA) in gravitational waves. ESO will also decide on the 2040s post-ELT projects between 2027-2028, which will make the Symposium timely for this discussion as well.
As exemplified by the gravitational wave event 170817 and the accompanying kilonova, rapid-timescale response on a global scale is critical for the fastest-evolving transients. The future facilities are expected to improve on this, along with a significant increase in the depth of observations. One example of an outstanding challenge in transient astrophysics is the identification of high-redshift supernovae associated with population III stars. Synergy between wide-field surveys and extremely large telescopes will be crucial for probing these events and their host stellar populations. Coordinated multiwavelength observations will also illuminate the nature of transients such as superluminous supernovae and fast blue optical transients (FBOTs), potentially powered by magnetars or central engines. Alongside these advancements, novel theoretical approaches are essential for interpreting and guiding the observations, addressing unresolved questions such as gamma-ray burst energy extraction and jet formation, and the origins of fast radio bursts.
With this Symposium, we thus aim to address the challenges presented by this new era by gathering together a balanced ensemble of researchers worldwide, with expertise on transient phenomena including supernovae, kilonovae, tidal disruption events, gamma-ray bursts, X-ray transients, fast radio bursts and various types of rare transients with debated origins, over a wide range of wavelengths from radio to infrared, optical and UV to X-rays and gamma-rays as well as in the gravitational-wave and neutrino domains. We will seek the insights of experts on a range of observational techniques from spectroscopy and polarimetry to interferometric observations providing the highest available angular resolution, as well as experts on modelling and simulations to explain the observations and to anticipate future discoveries of new types of transient events. As the new facilities are bound to bring about a flood of data that mere humans will have a hard time sifting through to find the most interesting events, we also aim to cover novel machine-learning methods and broker services that can optimize this process. The symposium will therefore consist of presentations providing a multi-wavelength and multimessenger view of the transient field, making use of the already-existing state-of-the-art instrumentation while looking into the technologies available in the near future and the best ways of using them. They will include highlights on intriguing individual events and their interpretations, as well as theoretical predictions showing us what to expect and where to look next, in preparation for a new era of discovery.
Being at the intersection of observations, theory, and computational techniques, this symposium offers a comprehensive overview and preview of the field, which will benefit the community and drive the science and technology forward. New insights will be emerging and collaborations forged, which in the end will be crucial for ensuring the optimum use of future facilities.
Key Topics:
- Multiwavelength and multimessenger observations of extragalactic transients
- Rates and physical mechanisms of supernovae, tidal disruption events, and related transients
- Physics of the transients and their progenitor systems, remnants, and host galaxies
- Transient surveys, statistical analyses and machine-learning techniques
- Opportunities and challenges offered by new ground-based and space instrumentation with time-domain coverage
- Intermediate-sized telescopes in the era of extremely large telescopes
- Strategies in rapid and multiwavelength observations of fast transients across all wavebands from gamma-ray bursts to fast radio bursts
- Novel theoretical approaches in multi-dimensional explosion modeling
- Central engine activities, accretions, and shocks as power sources in transients
- Citizen science and community involvement in transient science
For additional questions, please see the conference website.
Approximately 150 meetings covering the fields of COSPAR Scientific Commissions (SC), Panels, and Task Groups, with SC E: Research in Astrophysics from Space offering several relevant sessions, which can be found at this link.
Selected papers published in Advances in Space Research and Life Sciences in Space Research, fully refereed journals with no deadlines open to all submissions in relevant fields.
For additional questions, please see the conference website.