# SN 2024ggi: a fast rising, nearby supernova

**URL:** <https://forum.astro-colibri.science/t/sn-2024ggi-a-fast-rising-nearby-supernova/144>\
**Category:** Latest transients\
**Tags:** sn\
**Created:** [April 12, 2024, 7:28am UTC](https://forum.astro-colibri.science/t/sn-2024ggi-a-fast-rising-nearby-supernova/144 "2024-04-12T07:28:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Fabian.Schussler](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.astro-colibri.science/fabian.schussler/32/25_2.png) [@Fabian.Schussler](https://forum.astro-colibri.science/u/Fabian.Schussler)\
**Post date:** [April 12, 2024, 7:28am UTC](https://forum.astro-colibri.science/t/sn-2024ggi-a-fast-rising-nearby-supernova/144/1 "2024-04-12T07:28:55Z")

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A very fast rising type-II supernova in a nearby galaxy (NGC 3621, _only_ 7 Mpc away) has been detected on 2024-04-11. Observers and astrophotographers in the Southern hemisphere will have a great chance to follow this exciting event! Feel free to share your observations!

Details on [Astro-COLIBRI: SN 2024ggi](https://astro-colibri.com/event:TNS2024ggi)

The event has been submitted to the [BHTOM](https://bh-tom2.astrolabs.pl/targets/SN%202024ggi/), [RAPAS](https://forum.astro-colibri.science/t/rapas-observation-list-starting-2024-04-05/143/6), and the [Unistellar](https://alerts.unistellaroptics.com/transient/events.html) citizen science networks.

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**Author:** ![FabioA](https://avatars.discourse-cdn.com/v4/letter/f/d6d6ee/32.png) [@FabioA](https://forum.astro-colibri.science/u/FabioA)\
**Post date:** [April 12, 2024, 8:52am UTC](https://forum.astro-colibri.science/t/sn-2024ggi-a-fast-rising-nearby-supernova/144/2 "2024-04-12T08:52:50Z")

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Dear SN enthusiasts,

This SN shows ressemblance with SN2023ixf found last year. Both SN are of core collapse type and show spectral flash ionization features, an indication of interaction with a dense medium.  
Being both CC SN and at ~6.7 Mpc they’re supposed this close only a few times per decades, so we’re very lucky !

Here is a comparison of the early day spectroscopy of both targets and they look very similar in their lines and continuum.  
Follow-up spectroscopy is encouraged to monitor if these flash ionization features persist after 5-7 days.  
This information is very important in particular for gamma-ray telescopes such as Fermi-LAT, HESS, VERITAS, MAGIC, and CTA that search for signs of particle acceleration in supernova.

Enjoy the firework and post spectra here for more exciting discussion !

 ![Comparison-SN2023ixf-SN2024ggi](https://canada1.discourse-cdn.com/flex007/uploads/astro_colibri/original/1X/8dc00bc168041b05584d5f8f37709d0588556980.png)