The Astronomer's Telegram

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For new astronomical observations of transient sources, by the professional research community.
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(NEW) ATel 17725: AX Per returning to lower state after outburst... https://www.astronomerstelegram.org/?read=17725
ATel #17725: AX Per returning to lower state after outburst

The Astronomer's Telegram
(NEW) ATel 17724: MAXI/GSC observes GS 1354-64 entering the soft state... https://www.astronomerstelegram.org/?read=17724
ATel #17724: MAXI/GSC observes GS 1354-64 entering the soft state

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(NEW) ATel 17723: Detection of a PRS at 650 MHz associated with repeating FRB 20251229A using the uGMRT... https://www.astronomerstelegram.org/?read=17723
ATel #17723: Detection of a PRS at 650 MHz associated with repeating FRB 20251229A using the uGMRT

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(NEW) ATel 17722: NuSTAR confirms ongoing X-ray outburst from Be/X-ray binary pulsar GS 1843+00... https://www.astronomerstelegram.org/?read=17722
ATel #17722: NuSTAR confirms ongoing X-ray outburst from Be/X-ray binary pulsar GS 1843+00

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(NEW) ATel 17721: Independent Discovery of a Probable Nova in M31, AT 2026fkb... https://www.astronomerstelegram.org/?read=17721
ATel #17721: Independent Discovery of a Probable Nova in M31, AT 2026fkb

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(NEW) ATel 17720: Aql X-1 at stage of fading after current flare... https://www.astronomerstelegram.org/?read=17720
ATel #17720: Aql X-1 at stage of fading after current flare

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(NEW) ATel 17719: December 2025 Gemini spectroscopic and photometric constraints on the activity and gas contents of 3I/ATLAS... https://www.astronomerstelegram.org/?read=17719
ATel #17719: December 2025 Gemini spectroscopic and photometric constraints on the activity and gas contents of 3I/ATLAS

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(NEW) ATel 17718: Another Fast NIR flare of the FSRQ GB6 J0742+5444... https://www.astronomerstelegram.org/?read=17718
ATel #17718: Another Fast NIR flare of the FSRQ GB6 J0742+5444

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(NEW) ATel 17717: Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope... https://www.astronomerstelegram.org/?read=17717
ATel #17717: Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope

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(NEW) ATel 17716: Optical follow-up of IGR J06074+2205... https://www.astronomerstelegram.org/?read=17716
ATel #17716: Optical follow-up of IGR J06074+2205

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