Publications

I have recently submitted my first paper to MNRAS.

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Publications in Progress

The Search for Failed Supernovae with the Large Binocular Telescope: N6946-BH1, Still No Star
We present new Large Binocular Telescope, Hubble Space Telescope, and Spitzer Space Telescope data for the failed supernova candidate N6946-BH1. We also report an unsuccessful attempt to detect the candidate with Chandra. The ~300,000 Lsun red supergiant progenitor underwent an outburst in 2009 and has since disappeared in the optical. In the LBT data from May 2008 through October 2019, the upper limit on any increase in the R-band luminosity of the source is 2000 Lsun. HST and Spitzer observations show that the source continued to fade in the near-IR and mid-IR, fading by approximately a factor of 2 between October 2015 and September 2017 to 2900 Lsun at H band (F160W). Models of the spectral energy distribution are inconsistent with a surviving star obscured either by an ongoing wind or dust formed in the transient. The disappearance of N6946-BH1 remains consistent with a failed supernova.

Submitted to MNRAS
Link here to arXiv


Astronomer's Telegrams

Discovery of 9 ASAS-SN Supernova Candidates, Including 3 in the TESS Field of View
Brimacombe J., et al., 2020, ATel, 13891, 1

07/2020

ASAS-SN Discovery of a Bright UXOR Candidate
Jayasinghe T., et al., 2020, ATel, 13881, 1

07/2020

Discovery of 9 ASAS-SN Supernova Candidates
Brimacombe. J., et al., 2020, ATel, 13843, 1

06/2020

ASAS-SN Discovery of an Unusually Luminous Cataclysmic Variable Candidate Undergoing a Dimming Episode
Jayasinghe T., et al., 2020, ATel, 13824, 1

06/2020

ASAS-SN Discovery of a Rapid and Deep Fading Episode in a YSO Candidate
Way Z., et al., 2020, ATel, 13818, 1

06/2020

Discovery of 7 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2020, ATel, 13772, 1

06/2020

ASAS-SN Discovery of a Heavily Reddened Eclipsed Giant Star in a 750 day Orbit
Jayasinghe T., et al., 2020, ATel, 13745, 1

05/2020

Discovery of 6 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2020, ATel, 13666, 1

04/2020

ASAS-SN Discovery of a Spotted Giant Star with Extreme Variability
Jayasinghe T., et al., 2020, ATel, 13593, 1

03/2020

Discovery of 9 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2020, ATel, 13503, 1

02/2020

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2020, ATel, 13413, 1

01/2020

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2020, ATel, 13388, 1

01/2020

Continued Unusual Behavior of ASASSN-V J060000.76-310027.83
Way Z., et al., 2019, ATel, 13357, 1

12/2019

ASAS-SN Discovery of an Unusual, Rapidly Fading Star
Way Z., et al., 2019, ATel, 13346, 1

12/2019

ASASSN-19acc: Discovery of A Bright Type IIn Supernova in the TESS Field
Cacella P., et al., 2019, ATel, 13326, 1

12/2019

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 13325, 1

12/2019

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 13323, 1

12/2019

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 13271, 1

11/2019

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 13227, 1

10/2019

ASAS-SN Discovery of a Likely RCB Variable ASASSN-V J183900.17-405428.9
Way Z., et al., 2019, ATel, 13159, 1

10/2019

Discovery of 10 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 13147, 1

09/2019

ASAS-SN Discovery of an Unusual Stellar System with Deep Dimming Episodes
Way Z., et al., 2019, ATel, 13106, 1

09/2019

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 13094, 1

09/2019

ASASSN-19wf: Discovery of A Bright Type Ia Supernova in the TESS Field
Brimacombe J., et al., 2019, ATel, 13093, 1

09/2019

ASASSN-19vj: Discovery of A Possible Hostless Supernova
Brimacombe J., et al., 2019, ATel, 13061, 1

09/2019

Discovery of 9 ASAS-SN Supernova Candidates
Bock G., et al., 2019, ATel, 13046, 1

08/2019

Spectroscopic classification of ASASSN-19si as a WZ Sge-type dwarf nova
Kawash A., et al., 2019, ATel, 13034, 1

08/2019

ASASSN-19tr: Discovery of A Type Iax Supernova in VV 525
Brimacombe J., et al., 2019, ATel, 13004, 1

08/2019

Discovery of 9 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 12998, 1

08/2019

Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 12954, 1

07/2019

ATel 12901: Discovery of 8 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 12901, 1

07/2019

ASASSN-19or: Discovery of A Type II Supernova in the TESS Field
Castro N., et al., 2019, ATel, 12864, 1

06/2019

Discovery of 9 ASAS-SN Supernova Candidates
Brimacombe J., et al., 2019, ATel, 12863, 1

06/2019

Spectroscopic classification of ASASSN-19oa as a dwarf nova
Aydi E., et al., 2019, ATel, 12842, 1

06/2019

ASASSN-19ny: Discovery of A Probable Supernova in the TESS Field
Nicholls B., et al., 2019, ATel, 12835, 1

06/2019

SALT spectroscopic classification of ASASSN-19mo as a classical nova
Aydi E., et al., 2019, ATel, 12795, 1

05/2019

Recrudescence of the ''Unusually Persistent Transient'' SDSS1133 as Seen in ASAS-SN Data
Stanek K.Z., et al., 2019, ATel, 12794, 1

05/2019