Added estimation of the host galaxy type using a color color figure based on data from the WISE infrared observatory (interfaces and API)
Additional host galaxy information can be obtained via a new external link to BLAST
Photometry
The full photometry data used to produce the lightcurve figures is now saved in a CSV file. Download it via the "Download lightcurve data" button in the lightcurve view.
Extracted photometry summary data: first, peak, and last observations from all filters in ZTF, ATLAS, and ASAS-SN.
Implemented photometry sub-filter processing to filter fast-rising and fading supernovae and other sub-filters. The filtering process now supports dictionaries, lists, and scalar inputs.
Enabled event filtering using this summary data in the graphical interfaces for all optical transients and in the API via the /latest_transient and /cone_search endpoints.
User accounts
Added acceptance of Privacy and Terms of Service during the account registration and via a pop-up and new indicator for existing accounts
Added possibility to change account’s login (i.e. email address )
Improved custom cone searches: easier choice and more flexibility for coordinate formats
Improved search for events in mobile interface, which now allows to load a single event and switch to the time period around it
Minor changes and bug fixes
Moon display is now representing the actual moon phase and illumination fraction
Reduced low significance FLaapLUC notification + added a sub-filter to filter these events
Various bugs fixes: allow to resend account verification email, wrong sign of the declination in visibility meta-data, “Unknown parameter in the database” error in cone searches, catalog icons not displayed, missing messages when copying to clipboard, updated Fermi-GBM contours and lightcurve downloads, any many more
Enable the display of the sun and moon positions in the “Map & coordinates settings”
Retrieve the position of the sun and moon in celestial and local coordinates via the new "/celestial_position" endpoint in the API
New notification stream announcing well localized gamma-ray bursts, i.e. a subset of GRBs with uncertainties <= 10arcmin
New sub-filter for GRBs allowing to select well localized bursts
Added the Major Atmospheric Cerenkov Experiment Telescope (MACE) Imaging Atmospheric Cherenkov Telescope to the pre-defined observatories
Dedicated interface for submission of H.E.S.S. ToOs
Minor changes and bug fixes
The web interface now adapts better to smaller screens or lower resolutions
The menu screens in the App version now also have a header and a return button in landscape mode of the App
Email registration with more than 4 characters in the domain name are now also accepted
Improved handling of color schemes
changed colors of close/cancel buttons if they are not the primary buttons. Buttons are now more uniform
adapted TimePicker and DatePicker color scheme to Astro-COLIBRI
adapted login screens to different color schemes
Version 2.21.0 (2025-03-04)
Added transients registered via the Central Bureau for Astronomical Telegrams (CBAT),
Added SVOM notices announcing GRBs detected by the ECLAIRs instrument
Added alerts on gravitational waves from mergers including at least one sub-solar mass object
API changes:
The endpoint to calculate the source visibility (“/visibility_plots_detailed”) now returns the detailed parameters of the visibility windows; this information is also accessible via the web frontend
Added a new endpoint for the TeVCat and Fermi-LAT 4FGL catalogs, allowing the user to search by parameter or by cone search ("/tevcat" & "/fermi"); see this interactive notebook for details
Enabled user configuration of new TOMs. TOMs (incl. the existing integration of BHTOM) are now dynamically handled in frontend and backend.
Minor changes and bug fixes
Event search in the web interface now allows to load the time period around the selected event
Added option to change the value for the default reset time by long pressing the reset timeline button
Added MOJAVE url for covered TeVCat and 4FGL AGN sources
Added information indicating events followed within the Kilonova-Catcher network + new filter allowing to select these events
Version 2.20.1 (2025-01-24)
Fixed a bug preventing autocompletion of source names in light mode (web)
Added a loading indicator for cone searches (web)
Added ToO submission for H.E.S.S. members (web)
Version 2.20.0 (2025-01-22)
New search button added to the top row of the web interface
Improved interface: now also working in landscape mode on smartphones and tablets
Light vs science mode:
New main switch between “light” and “science” mode in top row of the web interface
Cleaner interface in light mode with easier to grasp information and less technical details
Added a watchlist (registered users):
Selected events will be displayed in the skymap and latest transients list independent of the filter settings or time period
New features for TeVCat and 4FGL catalogs
Additional parameters displayed for all 4FGL and TeVCat sources
New filters for 4FGL and TeVCat sources
Minor changes and bug fixes
Default time period reduced to 7 days, configurable via the user settings (registered users)
Number of selected events shown at the bottom of the event list
New fields in the events (JSON format): image_urls: a dictionary pointing to additional figure for some events
New figure added to all neutrino alerts and all entries of the IceCat-1 catalog
Added distance filter for gravitational wave events
Added confirmation check before submitting events to RAPAS and BHTOM
Adapted to TNS v2.0
Updated Tilepy integration to tilepy v2.5.0
Version 2.19.0 (2024-12-11)
Improved optical lightcurves
Combining multiple ATLAS observations
Added upper limits (ATLAS and ZTF)
Enabled custom lightcurves for arbitrary sky positions (i.e. independent of transient events)
Enabled data from the RAPAS amateur astronomer network
Updates of the TeVCat and 4FGL-DR4 catalogs
TeVCat updated to latest version + 4FGL updated to DR4
Added Beta vs Energy Peak plot for 4FGL sources with significance > 20
Added Flux vs Spectral Index plot for TeVCat sources containing this information
Minor changes and bug fixes
Added button to download the information for the selected event in JSON format
Team updated on the website
Added link to the Lasair broker for transients detected by ZTF
Improved requests to confidential information
Added restricted group for CTAO/LST-1 (incl. submission of ToO requests)
Various minor improvements and bug fixes
Version 2.18.0 (2024-10-31)
Smart Home integration to enable visual alerts of incoming notifications
Added all known classified optical transients available in the IAU database (Transient Name Server), previously our collection only started 01/2022
Added new alert stream: IceCube searches for neutrino in coincidence with gravitational waves detected by LVK; notifications sent to the “neutrino” stream
Daily updated lightcurves for recent optical transients
Customized lightcurves using user-defined time ranges for all events
Added localisation contours for IceCube Cascade events
Added GRBs detected by the SVOM satellite
Minor changes
Improved sub-filters for classified optical transients
Updated the Tilepy integration to v1.1.0
improvements to layout and design
Various minor improvements and bug fixes
Version 2.14.0 (2024-07-01)
Introducing regular event updates from TNS
Added change history to all events within Astro-COLIBRI
Added date selection for tilepy scheduling, multi-observatory and longterm visibility
Added GRB ToO observations by the H.E.S.S. high-energy gamma-ray observatory
Minor changes
New filter (within 'general') allowing to different follow-up networks
Notifications sent with higher priority
Added reset of date range to filtering in the app
Reduced window around T CrB to reduce false alerts
Bug fixes
Event submissions to the RAPAS network
Visibility figures not accessible for some smartphone users
Version 2.13.0 (2024-05-04)
Introducing rate limits on the most computing and IO intensive endpoints (latest_transients and cone_search); see this forum post for details
General filters: sources visible by the selected observatory, angular distance to the sun, retracted events, etc.
Minor changes
Use of GPT-4o for event descriptions
Added Gemini North + South to observatories
User defined duration of an observation for the tilepy scheduling plan of GW follow-ups
Added direct link to scientific publications for each source on ADS/SciX
Bug fixes
Tilepy GW follow-up observation plans for radio observatories
Display of GW events in timebar
Version 2.12.2 (2024-05-06)
Added alerts stream for special targets: rare events that you don’t want to miss (e.g. the 2024 explosion of T CrB, a Galactic supernova, etc.)
Added SNEWS supernova neutrino alerts: notifications sent to supernova, neutrino, Astro-COLIBRI announcements, and the new “special targets” stream
Added user setting to adapt the precision of the displayed coordinates
Bug fixes
SuperKamiokande supernova neutrino alerts
Observer location set from user settings
Fixed crashes at startup of the interfaces
Version 2.12.1 (2024-04-23)
Added Einstein Probe (WXT) detections
Bug fixes
Observatory filters
Version 2.12.0 (2024-04-17)
Additional filtering options for gravitational waves and high-energy neutrinos
Event descriptions via OpenAI/GPT-4
Minor changes
Events followed by Kilonova-Catcher (KNC) identified
Improved tracking of app crashes
New style for the app onboarding
Bug fixes
Synchronization and backup of filter settings
Download of events in cone search
Wrong error message during BHTOM submission
Version 2.11.0 (2024-03-15)
Added support for the RAPAS network (submission of interesting events from the frontends + weekly list of most interesting transient posted in the Astro-COLIBRI forum)
Added support for the BHTOM network (submission of interesting events from the frontends)
Download the full filter settings defined in the interface as JSON file (science mode)
Minor bug fixes and improvements
Fixed opening of Unistellar deeplinks
Added new event information: sun distance + follow-up campaigns
Added support for multiple brokers (e.g. Ampel, Fink, etc.)
Updated documentation
Version 2.10.0 (2024-02-28)
Multi-observatory visibility plot: select multiple observatories around the world to efficiently plan your follow-up campaigns
Opening the app from a notification now directly loads the announced event
Introducing color schemes: choose between different schemes to customize the appearence of the interface
Improved creation of figures (bug fix + performance increase)
New menu entry for contact and additional information in the mobile app
Improved documentation of the public API endpoints
Bug fixes:
Autocompletion of multiple detected sources
Contact email link on Android
Shifts in the timeline
Version 2.1.0. (2022-11-21)
Improved performance: new cloud computing architecture + avoid recalculation of existing figures +
reduced refreshes of the frontend
Added a new alert stream: GeV flares from AGN detected by Fermi-LAT via the FLaapLUC pipeline (incl.
new figures showing the latest results); see also FLaapLUC alerts
Support for different coordinate systems (Ecliptic and Galactic) and different projections
(Hammer-Aitoff, Mollweide, Mercator)
Addition of a figure showing the Swift-XRT lightcurve for GRBs detected by Swift in the context of
archival and VHE detected GRBs
Added manual cone searches and ATEL search to the smartphone apps
Various other improvements:
Zoom in the latest transients map now triggers a cone search in that region
Increased available archival transients: GRBs from Swift, Fermi and INTEGRAL since Jan/2016 + all
public IceCube neutrino alerts + all public HAWC and IceCube-HAWC alerts
Selection/deselection of all observatories or event types
Added link to ZTF viewer ‘SNAD’ + ALeRCE + improved link to FINK
Onboarding more interactive
Improved API documentation
Version 2.0.2 (2022-10-07)
Display of localisation uncertainties of all transients
Performance improvements: building of main widget reduced + switch to Flutter 3
Bug fix: manual cone searches
Version 2.0.1 (2022-09-16)
Bug fix: manual cone searches
Version 2.0.0 (2022-09-01)
Major upgrade of the web interface
Timeline of events to visualize temporal correlations and facilitates choice of time period
Combination of event filters and legend
Links to external platforms shown as cards (incl. logos and short descriptions)
Introduced “Science mode” switching between event descriptions and observability information
Direct access to custom searches for sources in arbitrary sky locations
Artists illustration of the different transient categories
General improvements
added direct links to the Living Swift-XRT Point Source catalogue
Bug fixes
Update of Swift alerts were not working as expected
Various minor bug fixes and improvements
Version 1.4.2 (2022-06-10)
Added search for ATELs
Bug fix: event filtering in the web frontend
Treatment of non-GRB alerts by Swift
Version 1.4.1 (2022-05-18)
Event information improved: additional parameters displayed + link to ALADIN includes uncertainty
region + link to AAVSO lightcurves + TACH/GCN viewer
Selection of date for visibility plot possible
New notification stream for bright (mag<18) optical transients
Onboarding/tutorial for the mobile app
Switch to and from the legend improved on mobile app
Version 1.4.0 (2022-03-07)
Enabling the definition and management of custom observatories
Updated source catalog to 4FGL-DR3 and latest TevCat
Additional information (SNe alerts from the SuperK neutrino detector, access to SkyMapper images, new
observatory locations, source redshift information, etc.)
Various bug fixes (Horizontal scrolling of links; custom observatory locations on mobile frontends;
Access to filter settings (issues for some users existed); GCN parser stability issues; etc.)