The ASAS-SN bright supernova catalogue – IV. 2017

Holoien, T. W. S.; Brown, J. S.; Vallely, P.; Stanek, K. Z.; Kochanek, C. S.; Shappee, B. J.; Prieto, J. L.; Dong, Subo; Brimacombe, J.; Bishop, D. W.; Bose, S.; Beacom, J. F.; Bersier, D.; Chen, Ping; Chomiuk, Laura; Falco, E.; Holmbo, S.; Jayasinghe, T.; Morrell, N.; Pojmański, G.; Shields, J.; Strader, Jay; Stritzinger, M. D.; Thompson, Todd A.; Woźniak, P. R.; Bock, G.; Cacella, P.; Carballo, J. G.; Cruz, I.; Conseil, E.; Farfán, R. G.; Fernández, J. M.; Kiyota, S.; Koff, R. A.; Krannich, G.; Marples, P.; Masi, G.; Monard, L. A. G.; Muñoz, J. A.; Nicholls, B.; Post, R. S.; Stone, G.; Trappett, D.; Wiethoff, W.

doi:10.1093/mnras/stz073

Cited by 53 publications

(66 citation statements)

References 53 publications

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“…In the ZTF BTS, we identify 504 normal SNe Ia, 31 91T-like SNe, and 6 91bg-like SNe. This represents significantly less 91T-like (∼6%) and 91bg-like (∼1%) SNe than one would expect based on the LOSS results for a magnitude-limited survey (∼18% 91T-like and ∼3% 91bg-like SNe; Li et al 2011); however, it does agree with what is found by ASAS-SN (∼6% 91T-like and ∼1% 91bg-like SNe; Holoien et al 2017aHoloien et al , 2017bHoloien et al , 2017cHoloien et al , 2019.…”

Section: Sne Iasupporting

confidence: 59%

“…The fraction of discoveries belonging to each of these classes is in agreement with the results from Li et al (2011) for a magnitude-limited survey, as shown in Figure 3. 38 Figure 3 also shows the relative rate of SNe found by ASAS-SN (Holoien et al 2017a(Holoien et al , 2017b(Holoien et al , 2017c(Holoien et al , 2019, which, like the ZTF BTS and unlike LOSS, does not target specific galaxies when searching for transients. 39 Both ZTF and ASAS-SN find a higher fraction of SNe II than LOSS, although these estimates all agree to within the uncertainties.…”

Section: Classificationsmentioning

confidence: 99%

“…Given the scarcity of spectroscopic resources for SN follow-up observations, the increase in SN discoveries has resulted in a smaller fraction of the SNe being classified over time. Of the ongoing surveys, only ASAS-SN is able to maintain close to complete spectroscopic coverage (95%±3% for m peak <16.5; Holoien et al 2019), largely because ASAS-SN only detects very bright SNe. Otherwise, the typical strategies are to either (i) focus entirely on the most nearby galaxies (LOSS employed this strategy and maintained a nearly complete survey for ∼10 yr), (ii) focus observations on likely SNe Ia to study cosmology (e.g., SDSS-II, SNLS), or (iii) target only a subset of SN candidates (e.g., PTF, ATLAS).…”

Section: Introductionmentioning

confidence: 99%

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The Zwicky Transient Facility Bright Transient Survey. I. Spectroscopic Classification and the Redshift Completeness of Local Galaxy Catalogs

Fremling

Miller

Sharma

et al. 2020

ApJ

134

154

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The Zwicky Transient Facility (ZTF) is performing a three-day cadence survey of the visible northern sky (∼3π) with newly found transient candidates announced via public alerts. The ZTF Bright Transient Survey (BTS) is a large spectroscopic campaign to complement the photometric survey. BTS endeavors to spectroscopically classify all extragalactic transients with m peak 18.5 mag in either the g ZTF or r ZTF filters, and publicly announce said classifications. BTS discoveries are predominantly supernovae (SNe), making this the largest flux-limited SN survey to date. Here we present a catalog of 761SNe, classified during the first nine months of ZTF (2018 April 1-2018 December 31). We report BTS SN redshifts from SN template matching and spectroscopic host-galaxy redshifts when available. We analyze the redshift completeness of local galaxy catalogs, the redshift completeness fraction (RCF; the ratio of SN host galaxies with known spectroscopic redshift prior to SN discovery to the total number of SN hosts). Of the 512 host galaxies with SNe Ia, 227 had previously known spectroscopic redshifts, yielding an RCF estimate of 44%±4%. The RCF decreases with increasing distance and decreasing galaxy luminosity (for z<0.05, or ∼200 Mpc, RCF≈0.6). Prospects for dramatically increasing the RCF are limited to new multifiber spectroscopic instruments or wide-field narrowband surveys. Existing galaxy redshift catalogs are only ∼50% complete at r≈16.9 mag. Pushing this limit several magnitudes deeper will pay huge dividends when searching for electromagnetic counterparts to gravitational wave events or sources of ultra-high-energy cosmic rays or neutrinos.

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Section: Sne Iasupporting

confidence: 59%

Section: Classificationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Zwicky Transient Facility Bright Transient Survey. I. Spectroscopic Classification and the Redshift Completeness of Local Galaxy Catalogs

Fremling

Miller

Sharma

et al. 2020

ApJ

134

154

View full text Add to dashboard Cite

show abstract

“…During O1 and O2, astronomers found and followed-up numerous CCSNe in the nearby universe. Based on the information from Astronomical Telegrams [36] and supernova catalogs (ASAS-SN [37][38][39][40], DLT40 [41], Gaia [42,43], ASRAS [44], TNS [45], OSC [46], CBAT [47]), we found 9 supernovae of interest.…”

Section: Targeted Core-collapse Supernovaementioning

confidence: 99%

Optically targeted search for gravitational waves emitted by core-collapse supernovae during the first and second observing runs of advanced LIGO and advanced Virgo

Abbott¹,

Abbott²,

Abbott³

et al. 2020

Phys. Rev. D

102

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We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed within a source distance of approximately 20 Mpc during the first and second observing runs of Advanced LIGO and Advanced Virgo. No significant gravitational-wave candidate was detected. We report the detection efficiencies as a function of the distance for waveforms derived from multidimensional numerical simulations and phenomenological extreme emission models. For neutrino-driven explosions the distance at which we reach 50% detection efficiency is approaching 5 kpc, and for magnetorotationally-driven explosions is up to 54 kpc. However, waveforms for extreme emission models are detectable up to 28 Mpc. For the first time, the gravitational-wave data enabled us to exclude part of the parameter spaces of two extreme emission models with confidence up to 83%, limited by coincident data coverage. Besides, using ad hoc harmonic signals windowed with Gaussian envelopes we constrained the gravitational-wave energy emitted during core-collapse at the levels of 4.27 × 10 −4 M c 2 and 1.28 × 10 −1 M c 2 for emissions at 235 Hz and 1304 Hz respectively. These constraints are two orders of magnitude more stringent than previously derived in the corresponding analysis using initial LIGO, initial Virgo and GEO 600 data.

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“…The SN early warning before the burst may also be achieved by monitoring the variability of progenitors with the wide field telescopes [56][57][58][59][60], which could cover a rather broadband wavelength and long distance. However, since it is still not well-established on the rate of magnitude variability [59][60][61][62] and light characteristics [63] during the late stage of the SN progenitors, independent early warning for the nearby galactic SN using pre-SN neutrinos is still useful and complementary to the optical telescope monitoring.…”

Section: B Sensitivitymentioning

confidence: 99%

Towards a complete reconstruction of supernova neutrino spectra in future large liquid-scintillator detectors

Li¹,

Li²,

Wang³

et al. 2018

Phys. Rev. D

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In this paper, we show how to carry out a relatively more realistic and complete reconstruction of supernova neutrino spectra in the future large liquid-scintillator detectors, by implementing the method of singular value decomposition with a proper regularization. For a core-collapse supernova at a distance of 10 kpc in the Milky Way, itsν e spectrum can be precisely determined from the inverse beta-decay processν e þ p → e þ þ n, for which a 20 kiloton liquid-scintillator detector with the resolution similar to the Jiangmen Underground Neutrino Observatory may register more than 5000 events. We have to rely predominantly on the elastic neutrino-electron scattering ν þ e − → ν þ e − and the elastic neutrino-proton scattering ν þ p → ν þ p for the spectra of ν e and ν x , where ν denotes collectively neutrinos and antineutrinos of all three flavors and ν x for ν μ and ν τ as well as their antiparticles. To demonstrate the validity of our approach, we also attempt to reconstruct the neutrino spectra by using the time-integrated neutrino data from the latest numerical simulations of delayed neutrino-driven supernova explosions.

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The ASAS-SN bright supernova catalogue – IV. 2017

Cited by 53 publications

References 53 publications

The Zwicky Transient Facility Bright Transient Survey. I. Spectroscopic Classification and the Redshift Completeness of Local Galaxy Catalogs

The Zwicky Transient Facility Bright Transient Survey. I. Spectroscopic Classification and the Redshift Completeness of Local Galaxy Catalogs

Optically targeted search for gravitational waves emitted by core-collapse supernovae during the first and second observing runs of advanced LIGO and advanced Virgo

Towards a complete reconstruction of supernova neutrino spectra in future large liquid-scintillator detectors

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