Observe - Alerts archive
Explanation of Alerts table
Alert ID: The name that was assigned to this Alert. Click on the link to see more information about the Alert.
Time: When Gaia first detected this Alert.
RA: The right ascension of the Alert (see Observing advice for more info).
Dec: The declination of the Alert.
Mag: The brightness of the Alert in Gaia magnitudes. For more information on magnitudes, see Observing advice. Note that a lower value for the magnitude means an Alert is brighter, and a higher value means it is fainter.
Classification: What sort of transient each Alert is.
Comment: Any additional information we have about why an alert is interesting, or information such as its distance.
Desired follow-up: Guidelines on what data we need from telescopes such as Faulkes for each Alert.
School: Initials of schools following-up this Alert (see Schools following-up Gaia Alerts).
|Alert ID||Time||RA||Dec||Magnitude||Classification||Comment||Desired follow-up||School|
|Gaia16agf||27 Feb 2016, 06:41||98.53741||-25.18462||17.03||SN Ia||Candidate SN, GSTEC predicts young SN Ia at -16 days||ECS|
|Gaia18aen||17 Jan 2018, 04:16||120.71694||-30.31032||11.33||unknown||bright emission line star in Galactic plane brightens by 1 magnitude||
This is bright and in reach of modest telescopes - BUT only really observable from the Southern Hemisphere. We've no idea what this is - please monitor
|Gaia18bdx||5 May 2018, 07:06||166.06666||50.03066||18.75||SN II||candidate SN in outskirts of galaxy UGC 6129, rising||ECS|
|Gaia16aax||26 Jan 2016, 15:55||218.57701||49.21014||18.33||AGN||slowly rising transient in galaxy core||
The active galactic nucleus in the centre of this galaxy has started to fade again. It's now at magnitude ~19, so lets keep an eye on it: we need images in u, g, r and i filters about every two weeks.
|Gaia16ada||9 Feb 2016, 00:03||188.96784||27.93208||17.72||SN imposter||transient near/in NGC4559C spatially coincident with candidate LBV with previous outbursts.||
A massive star seems to be undergoing a series of outbursts which we want to monitor. The outburst has faded, but lets keep an eye on it. We'll need a 300 second exposure with the LCOGT 1-m telescopes in the r filter, every month or so. CURRENTLY BEHIND THE SUN!
|Gaia16afe||21 Feb 2016, 12:31||91.78404||-45.18118||18.86||SN I-pec||SN candidate offset from galaxy ESO 254- G 019 (z=0.038917) by 18 arcsec||
This was a peculiar thermonuclear supernova which is very far from its host galaxy.
|Gaia16ahw||11 Mar 2016, 19:21||112.57248||25.03203||17.98||SN Ia||Blue transient with faint host visible in SDSS aka SN 2016ayg||
This was a thermonuclear SN close to maximum brightness with magnitude. Now it's too faint to observe.
|Gaia16ajr||30 Mar 2016, 18:22||88.24821||-17.86224||16.87||unknown||Candidate SN||
This Alert isn't visible any more (as it is behind the Sun)
|Gaia16alt||23 Apr 2016, 10:05||325.74996||66.19105||16.90||YSO||1.5 mag decline in YSO V* V350 Cep||
Young Stellar Objects (YSOs) sometimes have dips in brightness. We've seen such a dip in Gaia16alt, and we need ri imaging every two nights to confirm!
|Gaia16apd||16 May 2016, 19:09||180.71544||44.25761||17.35||SLSN||Blue transient on top of faint galaxy SDSS J120251.71+441527.4||
This is a rare "superluminous supernova" from a exploding star. Unfortunately it's behind the Sun right now, so we can't follow it up!