AstroNotes

This report includes classifications of 4 Type Ia SNe and two SNe of uncertain class. SN2023pgr exhibits a H-rich flash-ionised spectrum with Balmer lines and a blend of HeII, CIII and NIII emission …

Here we present multi-band photometric follow up observations of 5 optical transients using 1.82-m Plaskett Telescope (E2V, 4K x 2K CCD) at Dominion Astrophysical Observatory of the National Research…

Here we present multi-band photometric follow up observations of 27 optical transients using 1.82-m Plaskett Telescope (E2V, 4K x 2K CCD) at Dominion Astrophysical Observatory of the National Researc…

We report the discovery of a highly magnified transient (AT 2023mlz) in an arc at redshift z=3.784 in GLASS (PI: Treu) NIRISS observations of the Abell 2744 galaxy-cluster field taken on 2023 July 7.

We gathered archival multiwavelength (optical, IR, radio, X-ray) observations of AT2019aalc/ZTF19aaejtoy to investigate its nature. The overall multi-wavelength properties of this object are all remi…

We report the significant re-brightening of the optical transient AT2019aalc about 4 years after its initial flare was observed in 2019. Based on ZTF observations, the transient has brightened by 2.8…

We report follow-up observations of the fast and blue transient AT2023lya, discovered by ZTF (ZTF23aapuknd). The combined ZTF, ATLAS, LT and PS1 photometry indicates a rapid rise ( > 1.2 mag/day) wit…

We have obtained SDSS u, g and r filter observations of specific optical transients discovered by ZTF (Fremling, C., et al.), Pan-STARRS (Chambers, K.C., et al.), ATLAS (Tonry, J., et al), A. Horti-D…

We report 5 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is about 30 days and a typical peak r-band magnitude is …

We have obtained SDSS g filter observations of specific optical transients discovered by ZTF (Fremling, C., et al.), Pan-STARRS (Chambers, K.C., et al.) and ATLAS (Tonry, J., et al),. The photome…

We report the radio detection of SN2023ixf in the nearby galaxy M101 at 10 GHz

We report the discovery of the fast fading transient candidate ZTF23aaoohpy/AT2023lcr with the Zwicky Transient Facility. ZTF23aaoohpy was first detected on 2023-06-18 06:36:27 UT at g = 19.658 +- 0…

We present the early-phase photometry of SN 2023ixf based on images obtained from amateur astronomers and school observatories in Taiwan. Our collected light curve, spanning from 2023-05-20 to 2023-0…

We report the results of Swift X-ray observations of AT2023jxk.

This report includes classifications of 8 Type Ia's, and 4 Type II's. We encourage followup observations.

This report includes classifications of 14 Type Ia's, 6 Type II's (of which 2 are Type IIn), a Type Ic, and a SLSN-II. SN2023gpw displays a blue continuum with weak H-alpha, H-beta, and HeI emissi…

We report the discovery of 17 transient sources likely at redshifts z = 0.520-2.325, each discovered in the GOODS-North (GOODS-N) field using the 9-band JWST/NIRCam imaging data obtained by the JWST …

We present a summary table of X-ray observations of the fast blue optical transient AT2022tsd for reference use in our submitted research note.

This report includes classifications of 1 Type Ia and 1 Type II. We encourage followup observations.

The newly-reported pre-discovery images of M101 with small telescopes provide additional constraints on the SN 2023ixf eruption time. The first clear detection of the eruption is on 2023-05-18.82611 …

We report the discovery of the possible fast optical transient ZTF23aamhlcz/AT2023jrh with the Zwicky Transient Facility (ZTF). ZTF23aamhlcz was first detected on 2023-05-27 07:05 UT at r = 19.54 +- …

We report the radio non-detection of SN2023ixf in the nearby galaxy M101 at 10 GHz.

23 serendipitous image frames of M101 were acquired showing SN 2023ixf during pre-discovery times 2023-05-19 05:11 UTC through 2023-05-19 10:48 UTC. Magnitude calculations were made for each frame u…

Photometric follow up of SN 2023ixf in M101 from Observatoire du Mont St-Joseph, Québec, Canada.

We report on a re-brightening or second transient event towards the position of TDE AT 2021mhg / ZTF21abaxaqq on ZTF light curves, 727 days after discovery.

This report includes classifications of 6 Type Ia's (including 2 91T-like Type Ia's and 1 transitional 86G-like Type Ia), 1 SN, 1 QSO and 3 stellar transients. AT2023hpa was not visible on the acquis…

We present the observations made by several China-based amateur astronomers that cover the onset of SN 2023ixf. A serendipitous time-lapse observation of M 101 captured the onset of the supernova exp…

Photometric follow-up observations of SN 2023ixf

This report includes classifications of 6 Type Ia's and 2 Type II's.

This report is the classification of 1 SN Ia.

MeerLICHT follow-up of the localisation region of GW event LVK S230518h identified two extragalactic transients: AT2023ixg and AT2023iyb

This report includes classifications of 1 Type Ib, 1 Type II and 2 Type Ia (of which 1 Type Iax). We encourage followup observations.

We report the discovery of AT2023iuc (ZTF23aakfysp), a very fast (t_rise < 2 days) and luminous (M_peak < -19.7) transient discovered by ZTF.

We report activity at the location of the transient ZTF20acaazkt with a non-detection 17 days ago, and a first detection 9 days ago. It is rising, bright (g ~ 16.9 mag) and blue (g-r ~ -0.35 mag). Fu…

We report 5 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is about 30 days and a typical peak r-band magnitude is …

We report the discovery of the fast fading transient ZTF23aagunkc/AT2023ghq.

We report on the significant rebrightening of ~1.8 magnitudes in ~5 days for the type IIb SN2023aew, more than 80 days after the initial classification. We obtained a spectrum of the target on 2023-0…

We discovered a new transient in James Webb Space Telescope NIRCam imaging in the field of a massive galaxy cluster.

This report includes classifications of 1 Type II. We encourage followup observations.

This report includes classifications of 5 Type Ia's and 1 Type II. We encourage followup observations

Abstract: This report includes classifications of 4 Type Ia's and 2 Type II's. We encourage followup observations.

This report includes classifications of 2 Type Ia's, 4 Type II's, and 1 CV. We encourage followup observations.

The Young Supernova Experiment (YSE) collaboration reports the classification of 2 optical transients using the Gemini GMOS-S: 1 type II and 1 type Ic supernova.

We report additional follow-up detections of X-ray emission from the fast blue optical transient AT2022tsd at z=0.256.

This report includes classifications of 1 Type Ia and 1 Type II supernovae.

We re-classify the nuclear transient AT2022ablq using a spectrum obtained with NOT/ALFOSC. The transient was tentatively classified as a TDE but, based on this spectrum, we re-classify it as a SN Ibn.

This report includes classifications of 3 Type Ia supernovae

This report includes classifications of 2 Type Ia (of which 1 Type Iax), 1 Type II supernovae, 1 blue continuum and 1 more SN, possibly a Type II