Blue and featureless spectrum of MASTER OT J034412.48-263556.5 from IPN/Fermi GRB171030A Error Field
ATel #10935; Xiaofeng Wang (Physics Department and Tsinghua Center for Astrophysics, Tsinghua University), Sahu D. K. (Indian Ins/tute of Astrophysics), Jujia Zhang (Yunnan Observatories, Chinese Academy of Sciences), Lipunov V., Gorbovskoy E., Kornilov V., Tiurina N. (Lomonosov MSU)
on 8 Nov 2017; 10:36 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Gamma Ray, Request for Observations, Gamma-Ray Burst, Gravitational Waves, Supernovae, Transient, Direct Collapse Event
MASTER OT J034412.48-263556.5 - OT inside IPN/Fermi GRB171030A
MASTER OT J034412.48-263556.5 SN
(Lipunov et al., ATEL #10929 ; Lipunov et al. GCN #22102)
is inside common area of IPN/Fermi GRB171030A with NSs merging rate MAP inside local 50 Mpc distance. the situation map is available at
http://observ.pereplet.ru/images/VLNSmergrate.jpg
(see Lipunov, V. et al., GCN #22080 , Lipunov et al. "The gravitational wave sky, Astronomy and
Astrophysics, v.298, p.677, 1995; Lipunov et al., 2017, https://arxiv.org/ftp/arxiv/papers/1710/1710.05911.pdf ).
This OT was observed by X.Wang at Lijiang 2.4m telescope (spectrum with YFOSC+G3) and shows blue and featureless continuum like GRB170817A (Kilonova), but much brighter (Xiaofeng Wang et al. GCN #22108)
The second Spectrum was taken by D.Sahu at 2-m aperture optical-infrared telescope, the Himalayan Chandra Telescope (HCT) with HFOSC (Hanle Faint Object Spectrograph Camera https://www.iiap.res.in//iao/hfosc.html ) at Indian Astronomical Observatory on 2017-11-08 12:58:44UT, with total exposition 3600s.
MASTER-OAFA observed it on 2017-11-08 08:14:31.18UT with unfiltered m_OT=19.3+-0.3
Deep photometry and Spectrum are required.
The images are available http://master.sai.msu.ru/static/OT/MASTEROTJ034412.48-263556.5.jpg
List of Optical Transients discovered by MASTER
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